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-rw-r--r--.mailmap5
-rw-r--r--MAINTAINERS35
-rw-r--r--Makefile49
-rw-r--r--Makefile.target2
-rw-r--r--block/io.c2
-rw-r--r--block/linux-aio.c2
-rw-r--r--block/vmdk.c2
-rw-r--r--bsd-user/qemu.h2
-rwxr-xr-xconfigure62
-rw-r--r--contrib/libvhost-user/libvhost-user.h2
-rw-r--r--contrib/vhost-user-gpu/Makefile.objs6
-rw-r--r--contrib/vhost-user-gpu/vhost-user-gpu.c (renamed from contrib/vhost-user-gpu/main.c)0
-rw-r--r--cpus.c6
-rw-r--r--docs/interop/vhost-user.rst4
-rw-r--r--docs/system/cpu-models-x86.rst.inc57
-rw-r--r--docs/system/deprecated.rst7
-rw-r--r--exec.c9
-rw-r--r--hw/acpi/ich9.c99
-rw-r--r--hw/acpi/nvdimm.c6
-rw-r--r--hw/acpi/pcihp.c7
-rw-r--r--hw/acpi/piix4.c12
-rw-r--r--hw/arm/Kconfig1
-rw-r--r--hw/arm/exynos4210.c14
-rw-r--r--hw/arm/fsl-imx25.c10
-rw-r--r--hw/arm/fsl-imx31.c6
-rw-r--r--hw/arm/fsl-imx6.c42
-rw-r--r--hw/arm/fsl-imx6ul.c58
-rw-r--r--hw/arm/mainstone.c3
-rw-r--r--hw/arm/msf2-soc.c6
-rw-r--r--hw/arm/nrf51_soc.c2
-rw-r--r--hw/arm/omap_sx1.c6
-rw-r--r--hw/arm/palm.c3
-rw-r--r--hw/arm/pxa2xx.c3
-rw-r--r--hw/arm/spitz.c3
-rw-r--r--hw/arm/stellaris.c3
-rw-r--r--hw/arm/stm32f205_soc.c11
-rw-r--r--hw/arm/stm32f405_soc.c12
-rw-r--r--hw/arm/tosa.c3
-rw-r--r--hw/arm/xlnx-zynqmp.c11
-rw-r--r--hw/audio/fmopl.c4
-rw-r--r--hw/audio/intel-hda.c24
-rw-r--r--hw/block/m25p80.c58
-rw-r--r--hw/block/trace-events16
-rw-r--r--hw/char/sclpconsole-lm.c2
-rw-r--r--hw/char/sclpconsole.c2
-rw-r--r--hw/char/serial.c7
-rw-r--r--hw/core/loader.c25
-rw-r--r--hw/core/platform-bus.c3
-rw-r--r--hw/display/cg3.c5
-rw-r--r--hw/display/g364fb.c3
-rw-r--r--hw/display/macfb.c4
-rw-r--r--hw/display/tcx.c5
-rw-r--r--hw/dma/i8257.c2
-rw-r--r--hw/dma/rc4030.c4
-rw-r--r--hw/dma/soc_dma.c2
-rw-r--r--hw/i386/intel_iommu.c6
-rw-r--r--hw/i386/x86.c2
-rw-r--r--hw/intc/spapr_xive.c4
-rw-r--r--hw/isa/lpc_ich9.c27
-rw-r--r--hw/m68k/bootinfo.h2
-rw-r--r--hw/m68k/q800.c3
-rw-r--r--hw/misc/edu.c13
-rw-r--r--hw/misc/omap_l4.c2
-rw-r--r--hw/net/dp8393x.c5
-rw-r--r--hw/net/imx_fec.c6
-rw-r--r--hw/nvram/eeprom93xx.c2
-rw-r--r--hw/pci-host/prep.c5
-rw-r--r--hw/pci-host/q35.c14
-rw-r--r--hw/ppc/mac_newworld.c3
-rw-r--r--hw/ppc/mac_oldworld.c3
-rw-r--r--hw/ppc/pnv_lpc.c2
-rw-r--r--hw/ppc/ppc405_boards.c6
-rw-r--r--hw/ppc/spapr.c884
-rw-r--r--hw/ppc/spapr_caps.c19
-rw-r--r--hw/ppc/spapr_cpu_core.c16
-rw-r--r--hw/ppc/spapr_drc.c3
-rw-r--r--hw/ppc/spapr_events.c51
-rw-r--r--hw/ppc/spapr_hcall.c15
-rw-r--r--hw/ppc/spapr_nvdimm.c7
-rw-r--r--hw/ppc/spapr_ovec.c4
-rw-r--r--hw/ppc/spapr_rtas.c45
-rw-r--r--hw/rdma/vmw/pvrdma_qp_ops.c4
-rw-r--r--hw/riscv/sifive_e.c9
-rw-r--r--hw/riscv/sifive_u.c2
-rw-r--r--hw/s390x/virtio-ccw.c2
-rw-r--r--hw/scsi/spapr_vscsi.c72
-rw-r--r--hw/scsi/trace-events1
-rw-r--r--hw/scsi/viosrp.h3
-rw-r--r--hw/sh4/shix.c3
-rw-r--r--hw/sparc/leon3.c3
-rw-r--r--hw/ssi/aspeed_smc.c2
-rw-r--r--hw/usb/Kconfig5
-rw-r--r--hw/usb/Makefile.objs2
-rw-r--r--hw/usb/dev-network.c2
-rw-r--r--hw/usb/dev-smartcard-reader.c4
-rw-r--r--hw/usb/imx-usb-phy.c225
-rw-r--r--hw/usb/quirks.c4
-rw-r--r--hw/usb/quirks.h22
-rw-r--r--hw/virtio/virtio.c4
-rw-r--r--hw/xen/xen_pt.h2
-rw-r--r--include/hw/acpi/acpi-defs.h16
-rw-r--r--include/hw/arm/fsl-imx6.h6
-rw-r--r--include/hw/arm/fsl-imx6ul.h16
-rw-r--r--include/hw/arm/smmu-common.h2
-rw-r--r--include/hw/boards.h2
-rw-r--r--include/hw/i386/intel_iommu.h3
-rw-r--r--include/hw/ppc/spapr.h34
-rw-r--r--include/hw/ppc/spapr_cpu_core.h4
-rw-r--r--include/hw/ppc/spapr_ovec.h4
-rw-r--r--include/hw/s390x/event-facility.h2
-rw-r--r--include/hw/s390x/sclp.h8
-rw-r--r--include/hw/usb/imx-usb-phy.h53
-rw-r--r--include/hw/virtio/virtio-iommu.h2
-rw-r--r--include/qemu/cpuid.h3
-rw-r--r--include/qemu/lockable.h86
-rw-r--r--include/qom/object.h48
-rw-r--r--include/sysemu/cryptodev.h2
-rw-r--r--include/sysemu/whpx.h7
-rw-r--r--include/tcg/tcg.h2
-rw-r--r--memory.c31
-rw-r--r--net/queue.c2
-rw-r--r--pc-bios/README2
-rw-r--r--pc-bios/optionrom/pvh_main.c2
-rw-r--r--pc-bios/s390-ccw/bootmap.h2
-rw-r--r--pc-bios/s390-ccw/sclp.h2
-rw-r--r--pc-bios/slof.binbin931032 -> 965008 bytes
-rw-r--r--plugins/core.c7
-rw-r--r--plugins/loader.c16
-rw-r--r--qom/object.c212
m---------roms/SLOF0
-rw-r--r--scripts/coccinelle/memory-region-housekeeping.cocci159
-rw-r--r--scripts/coccinelle/memory-region-init-ram.cocci38
-rw-r--r--scsi/qemu-pr-helper.c17
-rw-r--r--softmmu/vl.c26
-rw-r--r--target/arm/cpu.c22
-rw-r--r--target/i386/hax-posix.c33
-rw-r--r--target/i386/hax-windows.c33
-rw-r--r--target/i386/sev.c106
-rw-r--r--target/i386/whp-dispatch.h9
-rw-r--r--target/i386/whpx-all.c162
-rw-r--r--target/ppc/cpu-qom.h1
-rw-r--r--target/ppc/cpu.h28
-rw-r--r--target/ppc/excp_helper.c79
-rw-r--r--target/ppc/kvm.c5
-rw-r--r--target/ppc/kvm_ppc.h7
-rw-r--r--target/ppc/mmu-hash64.c319
-rw-r--r--target/ppc/translate.c20
-rw-r--r--target/ppc/translate_init.inc.c116
-rw-r--r--target/s390x/ioinst.c2
-rw-r--r--tests/docker/dockerfiles/debian-amd64.docker1
-rw-r--r--tests/qtest/libqos/ahci.h2
-rw-r--r--tests/qtest/libqos/libqos-spapr.h3
-rw-r--r--ui/console.c4
-rw-r--r--ui/curses.c10
-rw-r--r--util/bufferiszero.c71
-rw-r--r--util/module.c14
-rw-r--r--util/oslib-posix.c7
-rw-r--r--util/qemu-timer.c23
158 files changed, 2484 insertions, 1668 deletions
diff --git a/.mailmap b/.mailmap
index 76154c7d8a..6412067bde 100644
--- a/.mailmap
+++ b/.mailmap
@@ -39,8 +39,9 @@ Julia Suvorova <jusual@mail.ru> Julia Suvorova via Qemu-devel <qemu-devel@nongnu
 Justin Terry (VM) <juterry@microsoft.com> Justin Terry (VM) via Qemu-devel <qemu-devel@nongnu.org>
 
 # Next, replace old addresses by a more recent one.
-Aleksandar Markovic <amarkovic@wavecomp.com> <aleksandar.markovic@mips.com>
-Aleksandar Markovic <amarkovic@wavecomp.com> <aleksandar.markovic@imgtec.com>
+Aleksandar Markovic <aleksandar.qemu.devel@gmail.com> <aleksandar.markovic@mips.com>
+Aleksandar Markovic <aleksandar.qemu.devel@gmail.com> <aleksandar.markovic@imgtec.com>
+Aleksandar Markovic <aleksandar.qemu.devel@gmail.com> <amarkovic@wavecomp.com>
 Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com> <arikalo@wavecomp.com>
 Anthony Liguori <anthony@codemonkey.ws> Anthony Liguori <aliguori@us.ibm.com>
 James Hogan <jhogan@kernel.org> <james.hogan@imgtec.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 32867bc636..7364af0d8b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -209,8 +209,8 @@ F: hw/microblaze/
 F: disas/microblaze.c
 
 MIPS TCG CPUs
-M: Aurelien Jarno <aurelien@aurel32.net>
-M: Aleksandar Markovic <amarkovic@wavecomp.com>
+M: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
+R: Aurelien Jarno <aurelien@aurel32.net>
 R: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>
 S: Maintained
 F: target/mips/
@@ -226,6 +226,7 @@ F: include/hw/mips/
 F: include/hw/misc/mips_*
 F: include/hw/timer/mips_gictimer.h
 F: tests/acceptance/linux_ssh_mips_malta.py
+F: tests/acceptance/machine_mips_malta.py
 F: tests/tcg/mips/
 K: ^Subject:.*(?i)mips
 
@@ -367,7 +368,7 @@ S: Maintained
 F: target/arm/kvm.c
 
 MIPS KVM CPUs
-M: Aleksandar Markovic <aleksandar.m.mail@gmail.com>
+M: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
 S: Odd Fixes
 F: target/mips/kvm.c
 
@@ -436,6 +437,17 @@ F: include/hw/block/dataplane/xen*
 F: include/hw/xen/
 F: include/sysemu/xen-mapcache.h
 
+Guest CPU Cores (HAXM)
+---------------------
+X86 HAXM CPUs
+M: Wenchao Wang <wenchao.wang@intel.com>
+M: Colin Xu <colin.xu@intel.com>
+L: haxm-team@intel.com
+W: https://github.com/intel/haxm/issues
+S: Maintained
+F: include/sysemu/hax.h
+F: target/i386/hax-*
+
 Hosts
 -----
 LINUX
@@ -764,6 +776,8 @@ F: hw/arm/sabrelite.c
 F: hw/arm/fsl-imx6.c
 F: hw/misc/imx6_*.c
 F: hw/ssi/imx_spi.c
+F: hw/usb/imx-usb-phy.c
+F: include/hw/usb/imx-usb-phy.h
 F: include/hw/arm/fsl-imx6.h
 F: include/hw/misc/imx6_*.h
 F: include/hw/ssi/imx_spi.h
@@ -1016,7 +1030,7 @@ F: hw/display/jazz_led.c
 F: hw/dma/rc4030.c
 
 Malta
-M: Aleksandar Markovic <amarkovic@wavecomp.com>
+M: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
 M: Philippe Mathieu-Daudé <f4bug@amsat.org>
 R: Aurelien Jarno <aurelien@aurel32.net>
 S: Maintained
@@ -1029,21 +1043,22 @@ F: tests/acceptance/linux_ssh_mips_malta.py
 F: tests/acceptance/machine_mips_malta.py
 
 Mipssim
-M: Aleksandar Markovic <amarkovic@wavecomp.com>
+M: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
 R: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>
 S: Odd Fixes
 F: hw/mips/mips_mipssim.c
 F: hw/net/mipsnet.c
 
 R4000
-M: Aurelien Jarno <aurelien@aurel32.net>
+M: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
+R: Aurelien Jarno <aurelien@aurel32.net>
 R: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>
 S: Obsolete
 F: hw/mips/mips_r4k.c
 
 Fulong 2E
 M: Philippe Mathieu-Daudé <f4bug@amsat.org>
-M: Aleksandar Markovic <amarkovic@wavecomp.com>
+M: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
 S: Odd Fixes
 F: hw/mips/mips_fulong2e.c
 F: hw/isa/vt82c686.c
@@ -2036,6 +2051,7 @@ F: include/exec/ramblock.h
 F: memory.c
 F: include/exec/memory-internal.h
 F: exec.c
+F: scripts/coccinelle/memory-region-housekeeping.cocci
 
 SPICE
 M: Gerd Hoffmann <kraxel@redhat.com>
@@ -2507,7 +2523,8 @@ F: tcg/i386/
 F: disas/i386.c
 
 MIPS TCG target
-M: Aurelien Jarno <aurelien@aurel32.net>
+M: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
+R: Aurelien Jarno <aurelien@aurel32.net>
 R: Aleksandar Rikalo <aleksandar.rikalo@rt-rk.com>
 S: Maintained
 F: tcg/mips/
@@ -2835,7 +2852,7 @@ S: Odd Fixes
 F: scripts/git-submodule.sh
 
 UI translations
-M: Aleksandar Markovic <aleksandar.m.mail@gmail.com>
+M: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
 F: po/*.po
 
 Sphinx documentation configuration and build machinery
diff --git a/Makefile b/Makefile
index ea0e08fc57..fc2808fb4b 100644
--- a/Makefile
+++ b/Makefile
@@ -1235,50 +1235,57 @@ endif
 include $(SRC_PATH)/tests/docker/Makefile.include
 include $(SRC_PATH)/tests/vm/Makefile.include
 
+print-help-run = printf "  %-30s - %s\\n" "$1" "$2"
+print-help = $(quiet-@)$(call print-help-run,$1,$2)
+
 .PHONY: help
 help:
 	@echo  'Generic targets:'
-	@echo  '  all             - Build all'
+	$(call print-help,all,Build all)
 ifdef CONFIG_MODULES
-	@echo  '  modules         - Build all modules'
+	$(call print-help,modules,Build all modules)
 endif
-	@echo  '  dir/file.o      - Build specified target only'
-	@echo  '  install         - Install QEMU, documentation and tools'
-	@echo  '  ctags/TAGS      - Generate tags file for editors'
-	@echo  '  cscope          - Generate cscope index'
+	$(call print-help,dir/file.o,Build specified target only)
+	$(call print-help,install,Install QEMU, documentation and tools)
+	$(call print-help,ctags/TAGS,Generate tags file for editors)
+	$(call print-help,cscope,Generate cscope index)
 	@echo  ''
 	@$(if $(TARGET_DIRS), \
 		echo 'Architecture specific targets:'; \
 		$(foreach t, $(TARGET_DIRS), \
-		printf "  %-30s - Build for %s\\n" $(t)/all $(t);) \
+		$(call print-help-run,$(t)/all,Build for $(t));) \
+		echo '')
+	@$(if $(TOOLS), \
+		echo 'Tools targets:'; \
+		$(foreach t, $(TOOLS), \
+		$(call print-help-run,$(t),Build $(shell basename $(t)) tool);) \
 		echo '')
 	@echo  'Cleaning targets:'
-	@echo  '  clean           - Remove most generated files but keep the config'
+	$(call print-help,clean,Remove most generated files but keep the config)
 ifdef CONFIG_GCOV
-	@echo  '  clean-coverage  - Remove coverage files'
+	$(call print-help,clean-coverage,Remove coverage files)
 endif
-	@echo  '  distclean       - Remove all generated files'
-	@echo  '  dist            - Build a distributable tarball'
+	$(call print-help,distclean,Remove all generated files)
+	$(call print-help,dist,Build a distributable tarball)
 	@echo  ''
 	@echo  'Test targets:'
-	@echo  '  check           - Run all tests (check-help for details)'
-	@echo  '  docker          - Help about targets running tests inside containers'
-	@echo  '  vm-help         - Help about targets running tests inside VM'
+	$(call print-help,check,Run all tests (check-help for details))
+	$(call print-help,docker,Help about targets running tests inside containers)
+	$(call print-help,vm-help,Help about targets running tests inside VM)
 	@echo  ''
 	@echo  'Documentation targets:'
-	@echo  '  html info pdf txt'
-	@echo  '                  - Build documentation in specified format'
+	$(call print-help,html info pdf txt,Build documentation in specified format)
 ifdef CONFIG_GCOV
-	@echo  '  coverage-report - Create code coverage report'
+	$(call print-help,coverage-report,Create code coverage report)
 endif
 	@echo  ''
 ifdef CONFIG_WIN32
 	@echo  'Windows targets:'
-	@echo  '  installer       - Build NSIS-based installer for QEMU'
+	$(call print-help,installer,Build NSIS-based installer for QEMU)
 ifdef QEMU_GA_MSI_ENABLED
-	@echo  '  msi             - Build MSI-based installer for qemu-ga'
+	$(call print-help,msi,Build MSI-based installer for qemu-ga)
 endif
 	@echo  ''
 endif
-	@echo  '  $(MAKE) [targets]      (quiet build, default)'
-	@echo  '  $(MAKE) V=1 [targets]  (verbose build)'
+	$(call print-help,$(MAKE) [targets],(quiet build, default))
+	$(call print-help,$(MAKE) V=1 [targets],(verbose build))
diff --git a/Makefile.target b/Makefile.target
index 2d43dc586a..934a9f7431 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -12,7 +12,7 @@ endif
 
 $(call set-vpath, $(SRC_PATH):$(BUILD_DIR))
 ifdef CONFIG_LINUX
-QEMU_CFLAGS += -I../linux-headers
+QEMU_CFLAGS += -isystem ../linux-headers
 endif
 QEMU_CFLAGS += -iquote .. -iquote $(SRC_PATH)/target/$(TARGET_BASE_ARCH) -DNEED_CPU_H
 
diff --git a/block/io.c b/block/io.c
index 7e4cb74cf4..aba67f66b9 100644
--- a/block/io.c
+++ b/block/io.c
@@ -1399,7 +1399,7 @@ static int coroutine_fn bdrv_co_do_copy_on_readv(BdrvChild *child,
             if (!(flags & BDRV_REQ_PREFETCH)) {
                 qemu_iovec_from_buf(qiov, qiov_offset + progress,
                                     bounce_buffer + skip_bytes,
-                                    pnum - skip_bytes);
+                                    MIN(pnum - skip_bytes, bytes - progress));
             }
         } else if (!(flags & BDRV_REQ_PREFETCH)) {
             /* Read directly into the destination */
diff --git a/block/linux-aio.c b/block/linux-aio.c
index 91204a25a2..3c0527c2bf 100644
--- a/block/linux-aio.c
+++ b/block/linux-aio.c
@@ -121,7 +121,7 @@ struct aio_ring {
     unsigned    incompat_features;
     unsigned    header_length;  /* size of aio_ring */
 
-    struct io_event io_events[0];
+    struct io_event io_events[];
 };
 
 /**
diff --git a/block/vmdk.c b/block/vmdk.c
index 20e909d997..8466051bc9 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -187,7 +187,7 @@ typedef struct VmdkMetaData {
 typedef struct VmdkGrainMarker {
     uint64_t lba;
     uint32_t size;
-    uint8_t  data[0];
+    uint8_t  data[];
 } QEMU_PACKED VmdkGrainMarker;
 
 enum {
diff --git a/bsd-user/qemu.h b/bsd-user/qemu.h
index 09e8aed9c7..f8bb1e5459 100644
--- a/bsd-user/qemu.h
+++ b/bsd-user/qemu.h
@@ -95,7 +95,7 @@ typedef struct TaskState {
     struct sigqueue *first_free; /* first free siginfo queue entry */
     int signal_pending; /* non zero if a signal may be pending */
 
-    uint8_t stack[0];
+    uint8_t stack[];
 } __attribute__((aligned(16))) TaskState;
 
 void init_task_state(TaskState *ts);
diff --git a/configure b/configure
index eb49bb6680..06fcd070fb 100755
--- a/configure
+++ b/configure
@@ -405,6 +405,7 @@ EXESUF=""
 DSOSUF=".so"
 LDFLAGS_SHARED="-shared"
 modules="no"
+module_upgrades="no"
 prefix="/usr/local"
 mandir="\${prefix}/share/man"
 datadir="\${prefix}/share"
@@ -899,7 +900,7 @@ Linux)
   linux="yes"
   linux_user="yes"
   kvm="yes"
-  QEMU_INCLUDES="-I\$(SRC_PATH)/linux-headers -I$PWD/linux-headers $QEMU_INCLUDES"
+  QEMU_INCLUDES="-isystem \$(SRC_PATH)/linux-headers -isystem $PWD/linux-headers $QEMU_INCLUDES"
   supported_os="yes"
   libudev="yes"
 ;;
@@ -1032,6 +1033,10 @@ for opt do
   --disable-modules)
       modules="no"
   ;;
+  --disable-module-upgrades) module_upgrades="no"
+  ;;
+  --enable-module-upgrades) module_upgrades="yes"
+  ;;
   --cpu=*)
   ;;
   --target-list=*) target_list="$optarg"
@@ -1421,6 +1426,11 @@ for opt do
   ;;
   --enable-avx2) avx2_opt="yes"
   ;;
+  --disable-avx512f) avx512f_opt="no"
+  ;;
+  --enable-avx512f) avx512f_opt="yes"
+  ;;
+
   --enable-glusterfs) glusterfs="yes"
   ;;
   --disable-virtio-blk-data-plane|--enable-virtio-blk-data-plane)
@@ -1786,6 +1796,7 @@ disabled with --disable-FEATURE, default is enabled if available:
   guest-agent-msi build guest agent Windows MSI installation package
   pie             Position Independent Executables
   modules         modules support (non-Windows)
+  module-upgrades try to load modules from alternate paths for upgrades
   debug-tcg       TCG debugging (default is disabled)
   debug-info      debugging information
   sparse          sparse checker
@@ -1857,6 +1868,7 @@ disabled with --disable-FEATURE, default is enabled if available:
   tcmalloc        tcmalloc support
   jemalloc        jemalloc support
   avx2            AVX2 optimization support
+  avx512f         AVX512F optimization support
   replication     replication support
   opengl          opengl support
   virglrenderer   virgl rendering support
@@ -2049,6 +2061,11 @@ if test "$modules" = "yes" && test "$mingw32" = "yes" ; then
   error_exit "Modules are not available for Windows"
 fi
 
+# module_upgrades is only reasonable if modules are enabled
+if test "$modules" = "no" && test "$module_upgrades" = "yes" ; then
+  error_exit "Can't enable module-upgrades as Modules are not enabled"
+fi
+
 # Static linking is not possible with modules or PIE
 if test "$static" = "yes" ; then
   if test "$modules" = "yes" ; then
@@ -3350,7 +3367,9 @@ if test "$vnc" = "yes" && test "$vnc_sasl" != "no" ; then
 int main(void) { sasl_server_init(NULL, "qemu"); return 0; }
 EOF
   # Assuming Cyrus-SASL installed in /usr prefix
-  vnc_sasl_cflags=""
+  # QEMU defines struct iovec in "qemu/osdep.h",
+  # we don't want libsasl to redefine it in <sasl/sasl.h>.
+  vnc_sasl_cflags="-DSTRUCT_IOVEC_DEFINED"
   vnc_sasl_libs="-lsasl2"
   if compile_prog "$vnc_sasl_cflags" "$vnc_sasl_libs" ; then
     vnc_sasl=yes
@@ -5574,6 +5593,36 @@ EOF
   fi
 fi
 
+##########################################
+# avx512f optimization requirement check
+#
+# There is no point enabling this if cpuid.h is not usable,
+# since we won't be able to select the new routines.
+# by default, it is turned off.
+# if user explicitly want to enable it, check environment
+
+if test "$cpuid_h" = "yes" && test "$avx512f_opt" = "yes"; then
+  cat > $TMPC << EOF
+#pragma GCC push_options
+#pragma GCC target("avx512f")
+#include <cpuid.h>
+#include <immintrin.h>
+static int bar(void *a) {
+    __m512i x = *(__m512i *)a;
+    return _mm512_test_epi64_mask(x, x);
+}
+int main(int argc, char *argv[])
+{
+	return bar(argv[0]);
+}
+EOF
+  if ! compile_object "" ; then
+    avx512f_opt="no"
+  fi
+else
+  avx512f_opt="no"
+fi
+
 ########################################
 # check if __[u]int128_t is usable.
 
@@ -6590,6 +6639,7 @@ if test "$slirp" != "no" ; then
     echo "smbd              $smbd"
 fi
 echo "module support    $modules"
+echo "alt path mod load $module_upgrades"
 echo "host CPU          $cpu"
 echo "host big endian   $bigendian"
 echo "target list       $target_list"
@@ -6717,6 +6767,7 @@ echo "libxml2           $libxml2"
 echo "tcmalloc support  $tcmalloc"
 echo "jemalloc support  $jemalloc"
 echo "avx2 optimization $avx2_opt"
+echo "avx512f optimization $avx512f_opt"
 echo "replication support $replication"
 echo "VxHS block device $vxhs"
 echo "bochs support     $bochs"
@@ -6943,6 +6994,9 @@ if test "$modules" = "yes"; then
   echo "CONFIG_STAMP=_$( (echo $qemu_version; echo $pkgversion; cat $0) | $shacmd - | cut -f1 -d\ )" >> $config_host_mak
   echo "CONFIG_MODULES=y" >> $config_host_mak
 fi
+if test "$module_upgrades" = "yes"; then
+  echo "CONFIG_MODULE_UPGRADES=y" >> $config_host_mak
+fi
 if test "$have_x11" = "yes" && test "$need_x11" = "yes"; then
   echo "CONFIG_X11=y" >> $config_host_mak
   echo "X11_CFLAGS=$x11_cflags" >> $config_host_mak
@@ -7268,6 +7322,10 @@ if test "$avx2_opt" = "yes" ; then
   echo "CONFIG_AVX2_OPT=y" >> $config_host_mak
 fi
 
+if test "$avx512f_opt" = "yes" ; then
+  echo "CONFIG_AVX512F_OPT=y" >> $config_host_mak
+fi
+
 if test "$lzo" = "yes" ; then
   echo "CONFIG_LZO=y" >> $config_host_mak
 fi
diff --git a/contrib/libvhost-user/libvhost-user.h b/contrib/libvhost-user/libvhost-user.h
index 6fc8000e99..f30394fab6 100644
--- a/contrib/libvhost-user/libvhost-user.h
+++ b/contrib/libvhost-user/libvhost-user.h
@@ -286,7 +286,7 @@ typedef struct VuVirtqInflight {
     uint16_t used_idx;
 
     /* Used to track the state of each descriptor in descriptor table */
-    VuDescStateSplit desc[0];
+    VuDescStateSplit desc[];
 } VuVirtqInflight;
 
 typedef struct VuVirtqInflightDesc {
diff --git a/contrib/vhost-user-gpu/Makefile.objs b/contrib/vhost-user-gpu/Makefile.objs
index 6170c919e4..09296091be 100644
--- a/contrib/vhost-user-gpu/Makefile.objs
+++ b/contrib/vhost-user-gpu/Makefile.objs
@@ -1,7 +1,7 @@
-vhost-user-gpu-obj-y = main.o virgl.o vugbm.o
+vhost-user-gpu-obj-y = vhost-user-gpu.o virgl.o vugbm.o
 
-main.o-cflags := $(PIXMAN_CFLAGS) $(GBM_CFLAGS)
-main.o-libs := $(PIXMAN_LIBS)
+vhost-user-gpu.o-cflags := $(PIXMAN_CFLAGS) $(GBM_CFLAGS)
+vhost-user-gpu.o-libs := $(PIXMAN_LIBS)
 
 virgl.o-cflags := $(VIRGL_CFLAGS) $(GBM_CFLAGS)
 virgl.o-libs := $(VIRGL_LIBS)
diff --git a/contrib/vhost-user-gpu/main.c b/contrib/vhost-user-gpu/vhost-user-gpu.c
index b45d2019b4..b45d2019b4 100644
--- a/contrib/vhost-user-gpu/main.c
+++ b/contrib/vhost-user-gpu/vhost-user-gpu.c
diff --git a/cpus.c b/cpus.c
index b4f8b84b61..ef441bdf62 100644
--- a/cpus.c
+++ b/cpus.c
@@ -1026,9 +1026,9 @@ static int do_vm_stop(RunState state, bool send_stop)
     int ret = 0;
 
     if (runstate_is_running()) {
+        runstate_set(state);
         cpu_disable_ticks();
         pause_all_vcpus();
-        runstate_set(state);
         vm_state_notify(0, state);
         if (send_stop) {
             qapi_event_send_stop();
@@ -1899,6 +1899,10 @@ void resume_all_vcpus(void)
 {
     CPUState *cpu;
 
+    if (!runstate_is_running()) {
+        return;
+    }
+
     qemu_clock_enable(QEMU_CLOCK_VIRTUAL, true);
     CPU_FOREACH(cpu) {
         cpu_resume(cpu);
diff --git a/docs/interop/vhost-user.rst b/docs/interop/vhost-user.rst
index 401652397c..3b1b6602c7 100644
--- a/docs/interop/vhost-user.rst
+++ b/docs/interop/vhost-user.rst
@@ -568,7 +568,7 @@ For split virtqueue, queue region can be implemented as:
       uint16_t used_idx;
 
       /* Used to track the state of each descriptor in descriptor table */
-      DescStateSplit desc[0];
+      DescStateSplit desc[];
   } QueueRegionSplit;
 
 To track inflight I/O, the queue region should be processed as follows:
@@ -690,7 +690,7 @@ For packed virtqueue, queue region can be implemented as:
       uint8_t padding[7];
 
       /* Used to track the state of each descriptor fetched from descriptor ring */
-      DescStatePacked desc[0];
+      DescStatePacked desc[];
   } QueueRegionPacked;
 
 To track inflight I/O, the queue region should be processed as follows:
diff --git a/docs/system/cpu-models-x86.rst.inc b/docs/system/cpu-models-x86.rst.inc
index cbad930c70..9a2327828e 100644
--- a/docs/system/cpu-models-x86.rst.inc
+++ b/docs/system/cpu-models-x86.rst.inc
@@ -49,10 +49,15 @@ mixture of host CPU models between machines, if live migration
 compatibility is required, use the newest CPU model that is compatible
 across all desired hosts.
 
-``Skylake-Server``, ``Skylake-Server-IBRS``
+``Cascadelake-Server``, ``Cascadelake-Server-noTSX``
+    Intel Xeon Processor (Cascade Lake, 2019), with "stepping" levels 6
+    or 7 only.  (The Cascade Lake Xeon processor with *stepping 5 is
+    vulnerable to MDS variants*.)
+
+``Skylake-Server``, ``Skylake-Server-IBRS``, ``Skylake-Server-IBRS-noTSX``
     Intel Xeon Processor (Skylake, 2016)
 
-``Skylake-Client``, ``Skylake-Client-IBRS``
+``Skylake-Client``, ``Skylake-Client-IBRS``, ``Skylake-Client-noTSX-IBRS}``
     Intel Core Processor (Skylake, 2015)
 
 ``Broadwell``, ``Broadwell-IBRS``, ``Broadwell-noTSX``, ``Broadwell-noTSX-IBRS``
@@ -148,6 +153,54 @@ features are included if using "Host passthrough" or "Host model".
   Requires the host CPU microcode to support this feature before it
   can be used for guest CPUs.
 
+``mds-no``
+  Recommended to inform the guest OS that the host is *not* vulnerable
+  to any of the MDS variants ([MFBDS] CVE-2018-12130, [MLPDS]
+  CVE-2018-12127, [MSBDS] CVE-2018-12126).
+
+  This is an MSR (Model-Specific Register) feature rather than a CPUID feature,
+  so it will not appear in the Linux ``/proc/cpuinfo`` in the host or
+  guest.  Instead, the host kernel uses it to populate the MDS
+  vulnerability file in ``sysfs``.
+
+  So it should only be enabled for VMs if the host reports @code{Not
+  affected} in the ``/sys/devices/system/cpu/vulnerabilities/mds`` file.
+
+``taa-no``
+  Recommended to inform that the guest that the host is ``not``
+  vulnerable to CVE-2019-11135, TSX Asynchronous Abort (TAA).
+
+  This too is an MSR feature, so it does not show up in the Linux
+  ``/proc/cpuinfo`` in the host or guest.
+
+  It should only be enabled for VMs if the host reports ``Not affected``
+  in the ``/sys/devices/system/cpu/vulnerabilities/tsx_async_abort``
+  file.
+
+``tsx-ctrl``
+  Recommended to inform the guest that it can disable the Intel TSX
+  (Transactional Synchronization Extensions) feature; or, if the
+  processor is vulnerable, use the Intel VERW instruction (a
+  processor-level instruction that performs checks on memory access) as
+  a mitigation for the TAA vulnerability.  (For details, refer to
+  Intel's `deep dive into MDS
+  <https://software.intel.com/security-software-guidance/insights/deep-dive-intel-analysis-microarchitectural-data-sampling>`_.)
+
+  Expose this to the guest OS if and only if: (a) the host has TSX
+  enabled; *and* (b) the guest has ``rtm`` CPU flag enabled.
+
+  By disabling TSX, KVM-based guests can avoid paying the price of
+  mitigating TSX-based attacks.
+
+  Note that ``tsx-ctrl`` too is an MSR feature, so it does not show
+  up in the Linux ``/proc/cpuinfo`` in the host or guest.
+
+  To validate that Intel TSX is indeed disabled for the guest, there are
+  two ways: (a) check for the *absence* of ``rtm`` in the guest's
+  ``/proc/cpuinfo``; or (b) the
+  ``/sys/devices/system/cpu/vulnerabilities/tsx_async_abort`` file in
+  the guest should report ``Mitigation: TSX disabled``.
+
 
 Preferred CPU models for AMD x86 hosts
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/docs/system/deprecated.rst b/docs/system/deprecated.rst
index 0838338d8f..412b1b166d 100644
--- a/docs/system/deprecated.rst
+++ b/docs/system/deprecated.rst
@@ -289,6 +289,13 @@ The RISC-V no MMU cpus have been depcreated. The two CPUs: ``rv32imacu-nommu`` a
 ``rv64imacu-nommu`` should no longer be used. Instead the MMU status can be specified
 via the CPU ``mmu`` option when using the ``rv32`` or ``rv64`` CPUs.
 
+``compat`` property of server class POWER CPUs (since 5.0)
+''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+
+The ``compat`` property used to set backwards compatibility modes for
+the processor has been deprecated. The ``max-cpu-compat`` property of
+the ``pseries`` machine type should be used instead.
+
 System emulator devices
 -----------------------
 
diff --git a/exec.c b/exec.c
index 0cc500d53a..de9d949902 100644
--- a/exec.c
+++ b/exec.c
@@ -1315,7 +1315,7 @@ bool cpu_physical_memory_test_and_clear_dirty(ram_addr_t start,
                                               unsigned client)
 {
     DirtyMemoryBlocks *blocks;
-    unsigned long end, page;
+    unsigned long end, page, start_page;
     bool dirty = false;
     RAMBlock *ramblock;
     uint64_t mr_offset, mr_size;
@@ -1325,7 +1325,8 @@ bool cpu_physical_memory_test_and_clear_dirty(ram_addr_t start,
     }
 
     end = TARGET_PAGE_ALIGN(start + length) >> TARGET_PAGE_BITS;
-    page = start >> TARGET_PAGE_BITS;
+    start_page = start >> TARGET_PAGE_BITS;
+    page = start_page;
 
     WITH_RCU_READ_LOCK_GUARD() {
         blocks = atomic_rcu_read(&ram_list.dirty_memory[client]);
@@ -1345,8 +1346,8 @@ bool cpu_physical_memory_test_and_clear_dirty(ram_addr_t start,
             page += num;
         }
 
-        mr_offset = (ram_addr_t)(page << TARGET_PAGE_BITS) - ramblock->offset;
-        mr_size = (end - page) << TARGET_PAGE_BITS;
+        mr_offset = (ram_addr_t)(start_page << TARGET_PAGE_BITS) - ramblock->offset;
+        mr_size = (end - start_page) << TARGET_PAGE_BITS;
         memory_region_clear_dirty_bitmap(ramblock->mr, mr_offset, mr_size);
     }
 
diff --git a/hw/acpi/ich9.c b/hw/acpi/ich9.c
index 4e74284b65..336cacea41 100644
--- a/hw/acpi/ich9.c
+++ b/hw/acpi/ich9.c
@@ -357,81 +357,6 @@ static void ich9_pm_set_cpu_hotplug_legacy(Object *obj, bool value,
     s->pm.cpu_hotplug_legacy = value;
 }
 
-static void ich9_pm_get_disable_s3(Object *obj, Visitor *v, const char *name,
-                                   void *opaque, Error **errp)
-{
-    ICH9LPCPMRegs *pm = opaque;
-    uint8_t value = pm->disable_s3;
-
-    visit_type_uint8(v, name, &value, errp);
-}
-
-static void ich9_pm_set_disable_s3(Object *obj, Visitor *v, const char *name,
-                                   void *opaque, Error **errp)
-{
-    ICH9LPCPMRegs *pm = opaque;
-    Error *local_err = NULL;
-    uint8_t value;
-
-    visit_type_uint8(v, name, &value, &local_err);
-    if (local_err) {
-        goto out;
-    }
-    pm->disable_s3 = value;
-out:
-    error_propagate(errp, local_err);
-}
-
-static void ich9_pm_get_disable_s4(Object *obj, Visitor *v, const char *name,
-                                   void *opaque, Error **errp)
-{
-    ICH9LPCPMRegs *pm = opaque;
-    uint8_t value = pm->disable_s4;
-
-    visit_type_uint8(v, name, &value, errp);
-}
-
-static void ich9_pm_set_disable_s4(Object *obj, Visitor *v, const char *name,
-                                   void *opaque, Error **errp)
-{
-    ICH9LPCPMRegs *pm = opaque;
-    Error *local_err = NULL;
-    uint8_t value;
-
-    visit_type_uint8(v, name, &value, &local_err);
-    if (local_err) {
-        goto out;
-    }
-    pm->disable_s4 = value;
-out:
-    error_propagate(errp, local_err);
-}
-
-static void ich9_pm_get_s4_val(Object *obj, Visitor *v, const char *name,
-                               void *opaque, Error **errp)
-{
-    ICH9LPCPMRegs *pm = opaque;
-    uint8_t value = pm->s4_val;
-
-    visit_type_uint8(v, name, &value, errp);
-}
-
-static void ich9_pm_set_s4_val(Object *obj, Visitor *v, const char *name,
-                               void *opaque, Error **errp)
-{
-    ICH9LPCPMRegs *pm = opaque;
-    Error *local_err = NULL;
-    uint8_t value;
-
-    visit_type_uint8(v, name, &value, &local_err);
-    if (local_err) {
-        goto out;
-    }
-    pm->s4_val = value;
-out:
-    error_propagate(errp, local_err);
-}
-
 static bool ich9_pm_get_enable_tco(Object *obj, Error **errp)
 {
     ICH9LPCState *s = ICH9_LPC_DEVICE(obj);
@@ -454,12 +379,12 @@ void ich9_pm_add_properties(Object *obj, ICH9LPCPMRegs *pm, Error **errp)
     pm->s4_val = 2;
 
     object_property_add_uint32_ptr(obj, ACPI_PM_PROP_PM_IO_BASE,
-                                   &pm->pm_io_base, errp);
+                                   &pm->pm_io_base, OBJ_PROP_FLAG_READ, errp);
     object_property_add(obj, ACPI_PM_PROP_GPE0_BLK, "uint32",
                         ich9_pm_get_gpe0_blk,
                         NULL, NULL, pm, NULL);
     object_property_add_uint32_ptr(obj, ACPI_PM_PROP_GPE0_BLK_LEN,
-                                   &gpe0_len, errp);
+                                   &gpe0_len, OBJ_PROP_FLAG_READ, errp);
     object_property_add_bool(obj, "memory-hotplug-support",
                              ich9_pm_get_memory_hotplug_support,
                              ich9_pm_set_memory_hotplug_support,
@@ -468,18 +393,14 @@ void ich9_pm_add_properties(Object *obj, ICH9LPCPMRegs *pm, Error **errp)
                              ich9_pm_get_cpu_hotplug_legacy,
                              ich9_pm_set_cpu_hotplug_legacy,
                              NULL);
-    object_property_add(obj, ACPI_PM_PROP_S3_DISABLED, "uint8",
-                        ich9_pm_get_disable_s3,
-                        ich9_pm_set_disable_s3,
-                        NULL, pm, NULL);
-    object_property_add(obj, ACPI_PM_PROP_S4_DISABLED, "uint8",
-                        ich9_pm_get_disable_s4,
-                        ich9_pm_set_disable_s4,
-                        NULL, pm, NULL);
-    object_property_add(obj, ACPI_PM_PROP_S4_VAL, "uint8",
-                        ich9_pm_get_s4_val,
-                        ich9_pm_set_s4_val,
-                        NULL, pm, NULL);
+    object_property_add_uint8_ptr(obj, ACPI_PM_PROP_S3_DISABLED,
+                                  &pm->disable_s3, OBJ_PROP_FLAG_READWRITE,
+                                  NULL);
+    object_property_add_uint8_ptr(obj, ACPI_PM_PROP_S4_DISABLED,
+                                  &pm->disable_s4, OBJ_PROP_FLAG_READWRITE,
+                                  NULL);
+    object_property_add_uint8_ptr(obj, ACPI_PM_PROP_S4_VAL,
+                                  &pm->s4_val, OBJ_PROP_FLAG_READWRITE, NULL);
     object_property_add_bool(obj, ACPI_PM_PROP_TCO_ENABLED,
                              ich9_pm_get_enable_tco,
                              ich9_pm_set_enable_tco,
diff --git a/hw/acpi/nvdimm.c b/hw/acpi/nvdimm.c
index 5219dd0e2e..eb6a37b14e 100644
--- a/hw/acpi/nvdimm.c
+++ b/hw/acpi/nvdimm.c
@@ -485,7 +485,7 @@ struct NvdimmFuncGetLabelDataOut {
     /* the size of buffer filled by QEMU. */
     uint32_t len;
     uint32_t func_ret_status; /* return status code. */
-    uint8_t out_buf[0]; /* the data got via Get Namesapce Label function. */
+    uint8_t out_buf[]; /* the data got via Get Namesapce Label function. */
 } QEMU_PACKED;
 typedef struct NvdimmFuncGetLabelDataOut NvdimmFuncGetLabelDataOut;
 QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncGetLabelDataOut) > NVDIMM_DSM_MEMORY_SIZE);
@@ -493,7 +493,7 @@ QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncGetLabelDataOut) > NVDIMM_DSM_MEMORY_SIZE);
 struct NvdimmFuncSetLabelDataIn {
     uint32_t offset; /* the offset in the namespace label data area. */
     uint32_t length; /* the size of data is to be written via the function. */
-    uint8_t in_buf[0]; /* the data written to label data area. */
+    uint8_t in_buf[]; /* the data written to label data area. */
 } QEMU_PACKED;
 typedef struct NvdimmFuncSetLabelDataIn NvdimmFuncSetLabelDataIn;
 QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncSetLabelDataIn) +
@@ -510,7 +510,7 @@ struct NvdimmFuncReadFITOut {
     /* the size of buffer filled by QEMU. */
     uint32_t len;
     uint32_t func_ret_status; /* return status code. */
-    uint8_t fit[0]; /* the FIT data. */
+    uint8_t fit[]; /* the FIT data. */
 } QEMU_PACKED;
 typedef struct NvdimmFuncReadFITOut NvdimmFuncReadFITOut;
 QEMU_BUILD_BUG_ON(sizeof(NvdimmFuncReadFITOut) > NVDIMM_DSM_MEMORY_SIZE);
diff --git a/hw/acpi/pcihp.c b/hw/acpi/pcihp.c
index 8413348a33..4dcef372bf 100644
--- a/hw/acpi/pcihp.c
+++ b/hw/acpi/pcihp.c
@@ -80,7 +80,8 @@ static void *acpi_set_bsel(PCIBus *bus, void *opaque)
 
         *bus_bsel = (*bsel_alloc)++;
         object_property_add_uint32_ptr(OBJECT(bus), ACPI_PCIHP_PROP_BSEL,
-                                       bus_bsel, &error_abort);
+                                       bus_bsel, OBJ_PROP_FLAG_READ,
+                                       &error_abort);
     }
 
     return bsel_alloc;
@@ -373,9 +374,9 @@ void acpi_pcihp_init(Object *owner, AcpiPciHpState *s, PCIBus *root_bus,
     memory_region_add_subregion(address_space_io, s->io_base, &s->io);
 
     object_property_add_uint16_ptr(owner, ACPI_PCIHP_IO_BASE_PROP, &s->io_base,
-                                   &error_abort);
+                                   OBJ_PROP_FLAG_READ, &error_abort);
     object_property_add_uint16_ptr(owner, ACPI_PCIHP_IO_LEN_PROP, &s->io_len,
-                                   &error_abort);
+                                   OBJ_PROP_FLAG_READ, &error_abort);
 }
 
 const VMStateDescription vmstate_acpi_pcihp_pci_status = {
diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c
index b84dbba2c3..964d6f5990 100644
--- a/hw/acpi/piix4.c
+++ b/hw/acpi/piix4.c
@@ -444,17 +444,17 @@ static void piix4_pm_add_propeties(PIIX4PMState *s)
     static const uint16_t sci_int = 9;
 
     object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_ENABLE_CMD,
-                                  &acpi_enable_cmd, NULL);
+                                  &acpi_enable_cmd, OBJ_PROP_FLAG_READ, NULL);
     object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_DISABLE_CMD,
-                                  &acpi_disable_cmd, NULL);
+                                  &acpi_disable_cmd, OBJ_PROP_FLAG_READ, NULL);
     object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK,
-                                  &gpe0_blk, NULL);
+                                  &gpe0_blk, OBJ_PROP_FLAG_READ, NULL);
     object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK_LEN,
-                                  &gpe0_blk_len, NULL);
+                                  &gpe0_blk_len, OBJ_PROP_FLAG_READ, NULL);
     object_property_add_uint16_ptr(OBJECT(s), ACPI_PM_PROP_SCI_INT,
-                                  &sci_int, NULL);
+                                  &sci_int, OBJ_PROP_FLAG_READ, NULL);
     object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_PM_IO_BASE,
-                                  &s->io_base, NULL);
+                                  &s->io_base, OBJ_PROP_FLAG_READ, NULL);
 }
 
 static void piix4_pm_realize(PCIDevice *dev, Error **errp)
diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index e5a876c8d1..188419dc1e 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -373,6 +373,7 @@ config FSL_IMX6
     select IMX
     select IMX_FEC
     select IMX_I2C
+    select IMX_USBPHY
     select SDHCI
 
 config ASPEED_SOC
diff --git a/hw/arm/exynos4210.c b/hw/arm/exynos4210.c
index 59a27bdd68..1f7253ef6f 100644
--- a/hw/arm/exynos4210.c
+++ b/hw/arm/exynos4210.c
@@ -305,23 +305,21 @@ static void exynos4210_realize(DeviceState *socdev, Error **errp)
     /*** Memory ***/
 
     /* Chip-ID and OMR */
-    memory_region_init_io(&s->chipid_mem, NULL, &exynos4210_chipid_and_omr_ops,
-        NULL, "exynos4210.chipid", sizeof(chipid_and_omr));
+    memory_region_init_io(&s->chipid_mem, OBJECT(socdev),
+                          &exynos4210_chipid_and_omr_ops, NULL,
+                          "exynos4210.chipid", sizeof(chipid_and_omr));
     memory_region_add_subregion(system_mem, EXYNOS4210_CHIPID_ADDR,
                                 &s->chipid_mem);
 
     /* Internal ROM */
-    memory_region_init_ram(&s->irom_mem, NULL, "exynos4210.irom",
+    memory_region_init_rom(&s->irom_mem, OBJECT(socdev), "exynos4210.irom",
                            EXYNOS4210_IROM_SIZE, &error_fatal);
-    memory_region_set_readonly(&s->irom_mem, true);
     memory_region_add_subregion(system_mem, EXYNOS4210_IROM_BASE_ADDR,
                                 &s->irom_mem);
     /* mirror of iROM */
-    memory_region_init_alias(&s->irom_alias_mem, NULL, "exynos4210.irom_alias",
-                             &s->irom_mem,
-                             0,
+    memory_region_init_alias(&s->irom_alias_mem, OBJECT(socdev),
+                             "exynos4210.irom_alias", &s->irom_mem, 0,
                              EXYNOS4210_IROM_SIZE);
-    memory_region_set_readonly(&s->irom_alias_mem, true);
     memory_region_add_subregion(system_mem, EXYNOS4210_IROM_MIRROR_BASE_ADDR,
                                 &s->irom_alias_mem);
 
diff --git a/hw/arm/fsl-imx25.c b/hw/arm/fsl-imx25.c
index a3f829f436..6f1a82ce3d 100644
--- a/hw/arm/fsl-imx25.c
+++ b/hw/arm/fsl-imx25.c
@@ -303,16 +303,16 @@ static void fsl_imx25_realize(DeviceState *dev, Error **errp)
     }
 
     /* initialize 2 x 16 KB ROM */
-    memory_region_init_rom(&s->rom[0], NULL,
-                           "imx25.rom0", FSL_IMX25_ROM0_SIZE, &err);
+    memory_region_init_rom(&s->rom[0], OBJECT(dev), "imx25.rom0",
+                           FSL_IMX25_ROM0_SIZE, &err);
     if (err) {
         error_propagate(errp, err);
         return;
     }
     memory_region_add_subregion(get_system_memory(), FSL_IMX25_ROM0_ADDR,
                                 &s->rom[0]);
-    memory_region_init_rom(&s->rom[1], NULL,
-                           "imx25.rom1", FSL_IMX25_ROM1_SIZE, &err);
+    memory_region_init_rom(&s->rom[1], OBJECT(dev), "imx25.rom1",
+                           FSL_IMX25_ROM1_SIZE, &err);
     if (err) {
         error_propagate(errp, err);
         return;
@@ -331,7 +331,7 @@ static void fsl_imx25_realize(DeviceState *dev, Error **errp)
                                 &s->iram);
 
     /* internal RAM (128 KB) is aliased over 128 MB - 128 KB */
-    memory_region_init_alias(&s->iram_alias, NULL, "imx25.iram_alias",
+    memory_region_init_alias(&s->iram_alias, OBJECT(dev), "imx25.iram_alias",
                              &s->iram, 0, FSL_IMX25_IRAM_ALIAS_SIZE);
     memory_region_add_subregion(get_system_memory(), FSL_IMX25_IRAM_ALIAS_ADDR,
                                 &s->iram_alias);
diff --git a/hw/arm/fsl-imx31.c b/hw/arm/fsl-imx31.c
index 55e90d104b..8472d2e911 100644
--- a/hw/arm/fsl-imx31.c
+++ b/hw/arm/fsl-imx31.c
@@ -206,7 +206,7 @@ static void fsl_imx31_realize(DeviceState *dev, Error **errp)
     }
 
     /* On a real system, the first 16k is a `secure boot rom' */
-    memory_region_init_rom(&s->secure_rom, NULL, "imx31.secure_rom",
+    memory_region_init_rom(&s->secure_rom, OBJECT(dev), "imx31.secure_rom",
                            FSL_IMX31_SECURE_ROM_SIZE, &err);
     if (err) {
         error_propagate(errp, err);
@@ -216,7 +216,7 @@ static void fsl_imx31_realize(DeviceState *dev, Error **errp)
                                 &s->secure_rom);
 
     /* There is also a 16k ROM */
-    memory_region_init_rom(&s->rom, NULL, "imx31.rom",
+    memory_region_init_rom(&s->rom, OBJECT(dev), "imx31.rom",
                            FSL_IMX31_ROM_SIZE, &err);
     if (err) {
         error_propagate(errp, err);
@@ -236,7 +236,7 @@ static void fsl_imx31_realize(DeviceState *dev, Error **errp)
                                 &s->iram);
 
     /* internal RAM (16 KB) is aliased over 256 MB - 16 KB */
-    memory_region_init_alias(&s->iram_alias, NULL, "imx31.iram_alias",
+    memory_region_init_alias(&s->iram_alias, OBJECT(dev), "imx31.iram_alias",
                              &s->iram, 0, FSL_IMX31_IRAM_ALIAS_SIZE);
     memory_region_add_subregion(get_system_memory(), FSL_IMX31_IRAM_ALIAS_ADDR,
                                 &s->iram_alias);
diff --git a/hw/arm/fsl-imx6.c b/hw/arm/fsl-imx6.c
index ecc62855f2..13f1bf23a6 100644
--- a/hw/arm/fsl-imx6.c
+++ b/hw/arm/fsl-imx6.c
@@ -22,6 +22,7 @@
 #include "qemu/osdep.h"
 #include "qapi/error.h"
 #include "hw/arm/fsl-imx6.h"
+#include "hw/usb/imx-usb-phy.h"
 #include "hw/boards.h"
 #include "hw/qdev-properties.h"
 #include "sysemu/sysemu.h"
@@ -86,6 +87,17 @@ static void fsl_imx6_init(Object *obj)
                               TYPE_IMX_USDHC);
     }
 
+    for (i = 0; i < FSL_IMX6_NUM_USB_PHYS; i++) {
+        snprintf(name, NAME_SIZE, "usbphy%d", i);
+        sysbus_init_child_obj(obj, name, &s->usbphy[i], sizeof(s->usbphy[i]),
+                              TYPE_IMX_USBPHY);
+    }
+    for (i = 0; i < FSL_IMX6_NUM_USBS; i++) {
+        snprintf(name, NAME_SIZE, "usb%d", i);
+        sysbus_init_child_obj(obj, name, &s->usb[i], sizeof(s->usb[i]),
+                              TYPE_CHIPIDEA);
+    }
+
     for (i = 0; i < FSL_IMX6_NUM_ECSPIS; i++) {
         snprintf(name, NAME_SIZE, "spi%d", i + 1);
         sysbus_init_child_obj(obj, name, &s->spi[i], sizeof(s->spi[i]),
@@ -349,6 +361,30 @@ static void fsl_imx6_realize(DeviceState *dev, Error **errp)
                                             esdhc_table[i].irq));
     }
 
+    /* USB */
+    for (i = 0; i < FSL_IMX6_NUM_USB_PHYS; i++) {
+        object_property_set_bool(OBJECT(&s->usbphy[i]), true, "realized",
+                                 &error_abort);
+        sysbus_mmio_map(SYS_BUS_DEVICE(&s->usbphy[i]), 0,
+                        FSL_IMX6_USBPHY1_ADDR + i * 0x1000);
+    }
+    for (i = 0; i < FSL_IMX6_NUM_USBS; i++) {
+        static const int FSL_IMX6_USBn_IRQ[] = {
+            FSL_IMX6_USB_OTG_IRQ,
+            FSL_IMX6_USB_HOST1_IRQ,
+            FSL_IMX6_USB_HOST2_IRQ,
+            FSL_IMX6_USB_HOST3_IRQ,
+        };
+
+        object_property_set_bool(OBJECT(&s->usb[i]), true, "realized",
+                                 &error_abort);
+        sysbus_mmio_map(SYS_BUS_DEVICE(&s->usb[i]), 0,
+                        FSL_IMX6_USBOH3_USB_ADDR + i * 0x200);
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->usb[i]), 0,
+                           qdev_get_gpio_in(DEVICE(&s->a9mpcore),
+                                            FSL_IMX6_USBn_IRQ[i]));
+    }
+
     /* Initialize all ECSPI */
     for (i = 0; i < FSL_IMX6_NUM_ECSPIS; i++) {
         static const struct {
@@ -405,7 +441,7 @@ static void fsl_imx6_realize(DeviceState *dev, Error **errp)
     }
 
     /* ROM memory */
-    memory_region_init_rom(&s->rom, NULL, "imx6.rom",
+    memory_region_init_rom(&s->rom, OBJECT(dev), "imx6.rom",
                            FSL_IMX6_ROM_SIZE, &err);
     if (err) {
         error_propagate(errp, err);
@@ -415,7 +451,7 @@ static void fsl_imx6_realize(DeviceState *dev, Error **errp)
                                 &s->rom);
 
     /* CAAM memory */
-    memory_region_init_rom(&s->caam, NULL, "imx6.caam",
+    memory_region_init_rom(&s->caam, OBJECT(dev), "imx6.caam",
                            FSL_IMX6_CAAM_MEM_SIZE, &err);
     if (err) {
         error_propagate(errp, err);
@@ -435,7 +471,7 @@ static void fsl_imx6_realize(DeviceState *dev, Error **errp)
                                 &s->ocram);
 
     /* internal OCRAM (256 KB) is aliased over 1 MB */
-    memory_region_init_alias(&s->ocram_alias, NULL, "imx6.ocram_alias",
+    memory_region_init_alias(&s->ocram_alias, OBJECT(dev), "imx6.ocram_alias",
                              &s->ocram, 0, FSL_IMX6_OCRAM_ALIAS_SIZE);
     memory_region_add_subregion(get_system_memory(), FSL_IMX6_OCRAM_ALIAS_ADDR,
                                 &s->ocram_alias);
diff --git a/hw/arm/fsl-imx6ul.c b/hw/arm/fsl-imx6ul.c
index c405b68d1d..56dfd7cecc 100644
--- a/hw/arm/fsl-imx6ul.c
+++ b/hw/arm/fsl-imx6ul.c
@@ -20,6 +20,7 @@
 #include "qapi/error.h"
 #include "hw/arm/fsl-imx6ul.h"
 #include "hw/misc/unimp.h"
+#include "hw/usb/imx-usb-phy.h"
 #include "hw/boards.h"
 #include "sysemu/sysemu.h"
 #include "qemu/error-report.h"
@@ -133,6 +134,18 @@ static void fsl_imx6ul_init(Object *obj)
                               TYPE_IMX_ENET);
     }
 
+    /* USB */
+    for (i = 0; i < FSL_IMX6UL_NUM_USB_PHYS; i++) {
+        snprintf(name, NAME_SIZE, "usbphy%d", i);
+        sysbus_init_child_obj(obj, name, &s->usbphy[i], sizeof(s->usbphy[i]),
+                              TYPE_IMX_USBPHY);
+    }
+    for (i = 0; i < FSL_IMX6UL_NUM_USBS; i++) {
+        snprintf(name, NAME_SIZE, "usb%d", i);
+        sysbus_init_child_obj(obj, name, &s->usb[i], sizeof(s->usb[i]),
+                              TYPE_CHIPIDEA);
+    }
+
     /*
      * SDHCI
      */
@@ -456,6 +469,28 @@ static void fsl_imx6ul_realize(DeviceState *dev, Error **errp)
                                             FSL_IMX6UL_ENETn_TIMER_IRQ[i]));
     }
 
+    /* USB */
+    for (i = 0; i < FSL_IMX6UL_NUM_USB_PHYS; i++) {
+        object_property_set_bool(OBJECT(&s->usbphy[i]), true, "realized",
+                                 &error_abort);
+        sysbus_mmio_map(SYS_BUS_DEVICE(&s->usbphy[i]), 0,
+                        FSL_IMX6UL_USBPHY1_ADDR + i * 0x1000);
+    }
+
+    for (i = 0; i < FSL_IMX6UL_NUM_USBS; i++) {
+        static const int FSL_IMX6UL_USBn_IRQ[] = {
+            FSL_IMX6UL_USB1_IRQ,
+            FSL_IMX6UL_USB2_IRQ,
+        };
+        object_property_set_bool(OBJECT(&s->usb[i]), true, "realized",
+                                 &error_abort);
+        sysbus_mmio_map(SYS_BUS_DEVICE(&s->usb[i]), 0,
+                        FSL_IMX6UL_USBO2_USB_ADDR + i * 0x200);
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->usb[i]), 0,
+                           qdev_get_gpio_in(DEVICE(&s->a7mpcore),
+                                            FSL_IMX6UL_USBn_IRQ[i]));
+    }
+
     /*
      * USDHC
      */
@@ -517,6 +552,20 @@ static void fsl_imx6ul_realize(DeviceState *dev, Error **errp)
     create_unimplemented_device("sdma", FSL_IMX6UL_SDMA_ADDR, 0x4000);
 
     /*
+     * PWM
+     */
+    create_unimplemented_device("pwm1", FSL_IMX6UL_PWM1_ADDR, 0x4000);
+    create_unimplemented_device("pwm2", FSL_IMX6UL_PWM2_ADDR, 0x4000);
+    create_unimplemented_device("pwm3", FSL_IMX6UL_PWM3_ADDR, 0x4000);
+    create_unimplemented_device("pwm4", FSL_IMX6UL_PWM4_ADDR, 0x4000);
+
+    /*
+     * CAN
+     */
+    create_unimplemented_device("can1", FSL_IMX6UL_CAN1_ADDR, 0x4000);
+    create_unimplemented_device("can2", FSL_IMX6UL_CAN2_ADDR, 0x4000);
+
+    /*
      * APHB_DMA
      */
     create_unimplemented_device("aphb_dma", FSL_IMX6UL_APBH_DMA_ADDR,
@@ -543,7 +592,7 @@ static void fsl_imx6ul_realize(DeviceState *dev, Error **errp)
     /*
      * ROM memory
      */
-    memory_region_init_rom(&s->rom, NULL, "imx6ul.rom",
+    memory_region_init_rom(&s->rom, OBJECT(dev), "imx6ul.rom",
                            FSL_IMX6UL_ROM_SIZE, &error_abort);
     memory_region_add_subregion(get_system_memory(), FSL_IMX6UL_ROM_ADDR,
                                 &s->rom);
@@ -551,7 +600,7 @@ static void fsl_imx6ul_realize(DeviceState *dev, Error **errp)
     /*
      * CAAM memory
      */
-    memory_region_init_rom(&s->caam, NULL, "imx6ul.caam",
+    memory_region_init_rom(&s->caam, OBJECT(dev), "imx6ul.caam",
                            FSL_IMX6UL_CAAM_MEM_SIZE, &error_abort);
     memory_region_add_subregion(get_system_memory(), FSL_IMX6UL_CAAM_MEM_ADDR,
                                 &s->caam);
@@ -568,8 +617,9 @@ static void fsl_imx6ul_realize(DeviceState *dev, Error **errp)
     /*
      * internal OCRAM (128 KB) is aliased over 512 KB
      */
-    memory_region_init_alias(&s->ocram_alias, NULL, "imx6ul.ocram_alias",
-                             &s->ocram, 0, FSL_IMX6UL_OCRAM_ALIAS_SIZE);
+    memory_region_init_alias(&s->ocram_alias, OBJECT(dev),
+                             "imx6ul.ocram_alias", &s->ocram, 0,
+                             FSL_IMX6UL_OCRAM_ALIAS_SIZE);
     memory_region_add_subregion(get_system_memory(),
                                 FSL_IMX6UL_OCRAM_ALIAS_ADDR, &s->ocram_alias);
 }
diff --git a/hw/arm/mainstone.c b/hw/arm/mainstone.c
index 1042017086..6bc643651b 100644
--- a/hw/arm/mainstone.c
+++ b/hw/arm/mainstone.c
@@ -124,9 +124,8 @@ static void mainstone_common_init(MemoryRegion *address_space_mem,
     /* Setup CPU & memory */
     mpu = pxa270_init(address_space_mem, mainstone_binfo.ram_size,
                       machine->cpu_type);
-    memory_region_init_ram(rom, NULL, "mainstone.rom", MAINSTONE_ROM,
+    memory_region_init_rom(rom, NULL, "mainstone.rom", MAINSTONE_ROM,
                            &error_fatal);
-    memory_region_set_readonly(rom, true);
     memory_region_add_subregion(address_space_mem, 0, rom);
 
     /* There are two 32MiB flash devices on the board */
diff --git a/hw/arm/msf2-soc.c b/hw/arm/msf2-soc.c
index 8f84692e64..588d643b8d 100644
--- a/hw/arm/msf2-soc.c
+++ b/hw/arm/msf2-soc.c
@@ -96,7 +96,7 @@ static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp)
     MemoryRegion *nvm_alias = g_new(MemoryRegion, 1);
     MemoryRegion *sram = g_new(MemoryRegion, 1);
 
-    memory_region_init_rom(nvm, NULL, "MSF2.eNVM", s->envm_size,
+    memory_region_init_rom(nvm, OBJECT(dev_soc), "MSF2.eNVM", s->envm_size,
                            &error_fatal);
     /*
      * On power-on, the eNVM region 0x60000000 is automatically
@@ -104,8 +104,8 @@ static void m2sxxx_soc_realize(DeviceState *dev_soc, Error **errp)
      * start address (0x0). We do not support remapping other eNVM,
      * eSRAM and DDR regions by guest(via Sysreg) currently.
      */
-    memory_region_init_alias(nvm_alias, NULL, "MSF2.eNVM",
-                             nvm, 0, s->envm_size);
+    memory_region_init_alias(nvm_alias, OBJECT(dev_soc), "MSF2.eNVM", nvm, 0,
+                             s->envm_size);
 
     memory_region_add_subregion(system_memory, ENVM_BASE_ADDRESS, nvm);
     memory_region_add_subregion(system_memory, 0, nvm_alias);
diff --git a/hw/arm/nrf51_soc.c b/hw/arm/nrf51_soc.c
index 4817a76ae0..57eff63f0d 100644
--- a/hw/arm/nrf51_soc.c
+++ b/hw/arm/nrf51_soc.c
@@ -165,7 +165,7 @@ static void nrf51_soc_realize(DeviceState *dev_soc, Error **errp)
     }
 
     /* STUB Peripherals */
-    memory_region_init_io(&s->clock, NULL, &clock_ops, NULL,
+    memory_region_init_io(&s->clock, OBJECT(dev_soc), &clock_ops, NULL,
                           "nrf51_soc.clock", 0x1000);
     memory_region_add_subregion_overlap(&s->container,
                                         NRF51_IOMEM_BASE, &s->clock, -1);
diff --git a/hw/arm/omap_sx1.c b/hw/arm/omap_sx1.c
index de5ff447dc..57829b3744 100644
--- a/hw/arm/omap_sx1.c
+++ b/hw/arm/omap_sx1.c
@@ -131,9 +131,8 @@ static void sx1_init(MachineState *machine, const int version)
     mpu = omap310_mpu_init(machine->ram, machine->cpu_type);
 
     /* External Flash (EMIFS) */
-    memory_region_init_ram(flash, NULL, "omap_sx1.flash0-0", flash_size,
+    memory_region_init_rom(flash, NULL, "omap_sx1.flash0-0", flash_size,
                            &error_fatal);
-    memory_region_set_readonly(flash, true);
     memory_region_add_subregion(address_space, OMAP_CS0_BASE, flash);
 
     memory_region_init_io(&cs[0], NULL, &static_ops, &cs0val,
@@ -167,9 +166,8 @@ static void sx1_init(MachineState *machine, const int version)
     if ((version == 1) &&
             (dinfo = drive_get(IF_PFLASH, 0, fl_idx)) != NULL) {
         MemoryRegion *flash_1 = g_new(MemoryRegion, 1);
-        memory_region_init_ram(flash_1, NULL, "omap_sx1.flash1-0",
+        memory_region_init_rom(flash_1, NULL, "omap_sx1.flash1-0",
                                flash1_size, &error_fatal);
-        memory_region_set_readonly(flash_1, true);
         memory_region_add_subregion(address_space, OMAP_CS1_BASE, flash_1);
 
         memory_region_init_io(&cs[1], NULL, &static_ops, &cs1val,
diff --git a/hw/arm/palm.c b/hw/arm/palm.c
index 99554bda19..97ca105d29 100644
--- a/hw/arm/palm.c
+++ b/hw/arm/palm.c
@@ -213,9 +213,8 @@ static void palmte_init(MachineState *machine)
     mpu = omap310_mpu_init(machine->ram, machine->cpu_type);
 
     /* External Flash (EMIFS) */
-    memory_region_init_ram(flash, NULL, "palmte.flash", flash_size,
+    memory_region_init_rom(flash, NULL, "palmte.flash", flash_size,
                            &error_fatal);
-    memory_region_set_readonly(flash, true);
     memory_region_add_subregion(address_space_mem, OMAP_CS0_BASE, flash);
 
     memory_region_init_io(&cs[0], NULL, &static_ops, &cs0val, "palmte-cs0",
diff --git a/hw/arm/pxa2xx.c b/hw/arm/pxa2xx.c
index 56a36202d7..336c9bad4a 100644
--- a/hw/arm/pxa2xx.c
+++ b/hw/arm/pxa2xx.c
@@ -2290,9 +2290,6 @@ PXA2xxState *pxa255_init(MemoryRegion *address_space, unsigned int sdram_size)
         s->ssp[i] = (SSIBus *)qdev_get_child_bus(dev, "ssi");
     }
 
-    sysbus_create_simple("sysbus-ohci", 0x4c000000,
-                         qdev_get_gpio_in(s->pic, PXA2XX_PIC_USBH1));
-
     s->pcmcia[0] = pxa2xx_pcmcia_init(address_space, 0x20000000);
     s->pcmcia[1] = pxa2xx_pcmcia_init(address_space, 0x30000000);
 
diff --git a/hw/arm/spitz.c b/hw/arm/spitz.c
index cbfa6934cf..c28d9b5ed7 100644
--- a/hw/arm/spitz.c
+++ b/hw/arm/spitz.c
@@ -929,8 +929,7 @@ static void spitz_common_init(MachineState *machine,
 
     sl_flash_register(mpu, (model == spitz) ? FLASH_128M : FLASH_1024M);
 
-    memory_region_init_ram(rom, NULL, "spitz.rom", SPITZ_ROM, &error_fatal);
-    memory_region_set_readonly(rom, true);
+    memory_region_init_rom(rom, NULL, "spitz.rom", SPITZ_ROM, &error_fatal);
     memory_region_add_subregion(address_space_mem, 0, rom);
 
     /* Setup peripherals */
diff --git a/hw/arm/stellaris.c b/hw/arm/stellaris.c
index 221a78674e..d136ba1a92 100644
--- a/hw/arm/stellaris.c
+++ b/hw/arm/stellaris.c
@@ -1300,9 +1300,8 @@ static void stellaris_init(MachineState *ms, stellaris_board_info *board)
     sram_size = ((board->dc0 >> 18) + 1) * 1024;
 
     /* Flash programming is done via the SCU, so pretend it is ROM.  */
-    memory_region_init_ram(flash, NULL, "stellaris.flash", flash_size,
+    memory_region_init_rom(flash, NULL, "stellaris.flash", flash_size,
                            &error_fatal);
-    memory_region_set_readonly(flash, true);
     memory_region_add_subregion(system_memory, 0, flash);
 
     memory_region_init_ram(sram, NULL, "stellaris.sram", sram_size,
diff --git a/hw/arm/stm32f205_soc.c b/hw/arm/stm32f205_soc.c
index 627fd446f5..118c342559 100644
--- a/hw/arm/stm32f205_soc.c
+++ b/hw/arm/stm32f205_soc.c
@@ -93,13 +93,10 @@ static void stm32f205_soc_realize(DeviceState *dev_soc, Error **errp)
     MemoryRegion *flash = g_new(MemoryRegion, 1);
     MemoryRegion *flash_alias = g_new(MemoryRegion, 1);
 
-    memory_region_init_ram(flash, NULL, "STM32F205.flash", FLASH_SIZE,
-                           &error_fatal);
-    memory_region_init_alias(flash_alias, NULL, "STM32F205.flash.alias",
-                             flash, 0, FLASH_SIZE);
-
-    memory_region_set_readonly(flash, true);
-    memory_region_set_readonly(flash_alias, true);
+    memory_region_init_rom(flash, OBJECT(dev_soc), "STM32F205.flash",
+                           FLASH_SIZE, &error_fatal);
+    memory_region_init_alias(flash_alias, OBJECT(dev_soc),
+                             "STM32F205.flash.alias", flash, 0, FLASH_SIZE);
 
     memory_region_add_subregion(system_memory, FLASH_BASE_ADDRESS, flash);
     memory_region_add_subregion(system_memory, 0, flash_alias);
diff --git a/hw/arm/stm32f405_soc.c b/hw/arm/stm32f405_soc.c
index 9bcad97853..4f10ce6176 100644
--- a/hw/arm/stm32f405_soc.c
+++ b/hw/arm/stm32f405_soc.c
@@ -95,17 +95,15 @@ static void stm32f405_soc_realize(DeviceState *dev_soc, Error **errp)
     Error *err = NULL;
     int i;
 
-    memory_region_init_ram(&s->flash, NULL, "STM32F405.flash", FLASH_SIZE,
-                           &err);
+    memory_region_init_rom(&s->flash, OBJECT(dev_soc), "STM32F405.flash",
+                           FLASH_SIZE, &err);
     if (err != NULL) {
         error_propagate(errp, err);
         return;
     }
-    memory_region_init_alias(&s->flash_alias, NULL, "STM32F405.flash.alias",
-                             &s->flash, 0, FLASH_SIZE);
-
-    memory_region_set_readonly(&s->flash, true);
-    memory_region_set_readonly(&s->flash_alias, true);
+    memory_region_init_alias(&s->flash_alias, OBJECT(dev_soc),
+                             "STM32F405.flash.alias", &s->flash, 0,
+                             FLASH_SIZE);
 
     memory_region_add_subregion(system_memory, FLASH_BASE_ADDRESS, &s->flash);
     memory_region_add_subregion(system_memory, 0, &s->flash_alias);
diff --git a/hw/arm/tosa.c b/hw/arm/tosa.c
index 4d95a1f3e2..5dee2d76c6 100644
--- a/hw/arm/tosa.c
+++ b/hw/arm/tosa.c
@@ -226,8 +226,7 @@ static void tosa_init(MachineState *machine)
 
     mpu = pxa255_init(address_space_mem, tosa_binfo.ram_size);
 
-    memory_region_init_ram(rom, NULL, "tosa.rom", TOSA_ROM, &error_fatal);
-    memory_region_set_readonly(rom, true);
+    memory_region_init_rom(rom, NULL, "tosa.rom", TOSA_ROM, &error_fatal);
     memory_region_add_subregion(address_space_mem, 0, rom);
 
     tmio = tc6393xb_init(address_space_mem, 0x10000000,
diff --git a/hw/arm/xlnx-zynqmp.c b/hw/arm/xlnx-zynqmp.c
index cab0160ae9..49f1c8d0de 100644
--- a/hw/arm/xlnx-zynqmp.c
+++ b/hw/arm/xlnx-zynqmp.c
@@ -318,9 +318,9 @@ static void xlnx_zynqmp_realize(DeviceState *dev, Error **errp)
         ddr_low_size = XLNX_ZYNQMP_MAX_LOW_RAM_SIZE;
         ddr_high_size = ram_size - XLNX_ZYNQMP_MAX_LOW_RAM_SIZE;
 
-        memory_region_init_alias(&s->ddr_ram_high, NULL,
-                                 "ddr-ram-high", s->ddr_ram,
-                                  ddr_low_size, ddr_high_size);
+        memory_region_init_alias(&s->ddr_ram_high, OBJECT(dev),
+                                 "ddr-ram-high", s->ddr_ram, ddr_low_size,
+                                 ddr_high_size);
         memory_region_add_subregion(get_system_memory(),
                                     XLNX_ZYNQMP_HIGH_RAM_START,
                                     &s->ddr_ram_high);
@@ -330,9 +330,8 @@ static void xlnx_zynqmp_realize(DeviceState *dev, Error **errp)
         ddr_low_size = ram_size;
     }
 
-    memory_region_init_alias(&s->ddr_ram_low, NULL,
-                             "ddr-ram-low", s->ddr_ram,
-                              0, ddr_low_size);
+    memory_region_init_alias(&s->ddr_ram_low, OBJECT(dev), "ddr-ram-low",
+                             s->ddr_ram, 0, ddr_low_size);
     memory_region_add_subregion(get_system_memory(), 0, &s->ddr_ram_low);
 
     /* Create the four OCM banks */
diff --git a/hw/audio/fmopl.c b/hw/audio/fmopl.c
index 173a7521f2..356d4dfbca 100644
--- a/hw/audio/fmopl.c
+++ b/hw/audio/fmopl.c
@@ -186,7 +186,7 @@ static int32_t *VIB_TABLE;
 
 /* envelope output curve table */
 /* attack + decay + OFF */
-static int32_t ENV_CURVE[2*EG_ENT+1];
+static int32_t *ENV_CURVE;
 
 /* multiple table */
 #define ML 2
@@ -1090,6 +1090,7 @@ FM_OPL *OPLCreate(int clock, int rate)
 	OPL->clock = clock;
 	OPL->rate  = rate;
 	OPL->max_ch = max_ch;
+    ENV_CURVE = g_new(int32_t, 2 * EG_ENT + 1);
 	/* init grobal tables */
 	OPL_initialize(OPL);
 	/* reset chip */
@@ -1127,6 +1128,7 @@ void OPLDestroy(FM_OPL *OPL)
 #endif
 	OPL_UnLockTable();
 	free(OPL);
+    g_free(ENV_CURVE);
 }
 
 /* ----------  Option handlers ----------       */
diff --git a/hw/audio/intel-hda.c b/hw/audio/intel-hda.c
index 1bcc3e5cf8..e8d18b7c58 100644
--- a/hw/audio/intel-hda.c
+++ b/hw/audio/intel-hda.c
@@ -181,7 +181,9 @@ struct IntelHDAState {
     IntelHDAStream st[8];
 
     /* state */
+    MemoryRegion container;
     MemoryRegion mmio;
+    MemoryRegion alias;
     uint32_t rirb_count;
     int64_t wall_base_ns;
 
@@ -670,12 +672,6 @@ static const struct IntelHDAReg regtab[] = {
         .offset   = offsetof(IntelHDAState, wall_clk),
         .rhandler = intel_hda_get_wall_clk,
     },
-    [ ICH6_REG_WALLCLK + 0x2000 ] = {
-        .name     = "WALLCLK(alias)",
-        .size     = 4,
-        .offset   = offsetof(IntelHDAState, wall_clk),
-        .rhandler = intel_hda_get_wall_clk,
-    },
 
     /* dma engine */
     [ ICH6_REG_CORBLBASE ] = {
@@ -837,12 +833,6 @@ static const struct IntelHDAReg regtab[] = {
         .size     = 4,                                                \
         .offset   = offsetof(IntelHDAState, st[_i].lpib),             \
     },                                                                \
-    [ ST_REG(_i, ICH6_REG_SD_LPIB) + 0x2000 ] = {                     \
-        .stream   = _i,                                               \
-        .name     = _t stringify(_i) " LPIB(alias)",                  \
-        .size     = 4,                                                \
-        .offset   = offsetof(IntelHDAState, st[_i].lpib),             \
-    },                                                                \
     [ ST_REG(_i, ICH6_REG_SD_CBL) ] = {                               \
         .stream   = _i,                                               \
         .name     = _t stringify(_i) " CBL",                          \
@@ -1125,9 +1115,15 @@ static void intel_hda_realize(PCIDevice *pci, Error **errp)
         error_free(err);
     }
 
+    memory_region_init(&d->container, OBJECT(d),
+                       "intel-hda-container", 0x4000);
     memory_region_init_io(&d->mmio, OBJECT(d), &intel_hda_mmio_ops, d,
-                          "intel-hda", 0x4000);
-    pci_register_bar(&d->pci, 0, 0, &d->mmio);
+                          "intel-hda", 0x2000);
+    memory_region_add_subregion(&d->container, 0x0000, &d->mmio);
+    memory_region_init_alias(&d->alias, OBJECT(d), "intel-hda-alias",
+                             &d->mmio, 0, 0x2000);
+    memory_region_add_subregion(&d->container, 0x2000, &d->alias);
+    pci_register_bar(&d->pci, 0, 0, &d->container);
 
     hda_codec_bus_init(DEVICE(pci), &d->codecs, sizeof(d->codecs),
                        intel_hda_response, intel_hda_xfer);
diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index 61f2fb8f8f..8227088441 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -32,17 +32,7 @@
 #include "qemu/module.h"
 #include "qemu/error-report.h"
 #include "qapi/error.h"
-
-#ifndef M25P80_ERR_DEBUG
-#define M25P80_ERR_DEBUG 0
-#endif
-
-#define DB_PRINT_L(level, ...) do { \
-    if (M25P80_ERR_DEBUG > (level)) { \
-        fprintf(stderr,  ": %s: ", __func__); \
-        fprintf(stderr, ## __VA_ARGS__); \
-    } \
-} while (0)
+#include "trace.h"
 
 /* Fields for FlashPartInfo->flags */
 
@@ -574,7 +564,8 @@ static void flash_erase(Flash *s, int offset, FlashCMD cmd)
         abort();
     }
 
-    DB_PRINT_L(0, "offset = %#x, len = %d\n", offset, len);
+    trace_m25p80_flash_erase(s, offset, len);
+
     if ((s->pi->flags & capa_to_assert) != capa_to_assert) {
         qemu_log_mask(LOG_GUEST_ERROR, "M25P80: %d erase size not supported by"
                       " device\n", len);
@@ -607,8 +598,7 @@ void flash_write8(Flash *s, uint32_t addr, uint8_t data)
     }
 
     if ((prev ^ data) & data) {
-        DB_PRINT_L(1, "programming zero to one! addr=%" PRIx32 "  %" PRIx8
-                   " -> %" PRIx8 "\n", addr, prev, data);
+        trace_m25p80_programming_zero_to_one(s, addr, prev, data);
     }
 
     if (s->pi->flags & EEPROM) {
@@ -662,6 +652,9 @@ static void complete_collecting_data(Flash *s)
 
     s->state = STATE_IDLE;
 
+    trace_m25p80_complete_collecting(s, s->cmd_in_progress, n, s->ear,
+                                     s->cur_addr);
+
     switch (s->cmd_in_progress) {
     case DPP:
     case QPP:
@@ -825,7 +818,7 @@ static void reset_memory(Flash *s)
         break;
     }
 
-    DB_PRINT_L(0, "Reset done.\n");
+    trace_m25p80_reset_done(s);
 }
 
 static void decode_fast_read_cmd(Flash *s)
@@ -941,9 +934,10 @@ static void decode_qio_read_cmd(Flash *s)
 
 static void decode_new_cmd(Flash *s, uint32_t value)
 {
-    s->cmd_in_progress = value;
     int i;
-    DB_PRINT_L(0, "decoded new command:%x\n", value);
+
+    s->cmd_in_progress = value;
+    trace_m25p80_command_decoded(s, value);
 
     if (value != RESET_MEMORY) {
         s->reset_enable = false;
@@ -1042,12 +1036,15 @@ static void decode_new_cmd(Flash *s, uint32_t value)
         break;
 
     case JEDEC_READ:
-        DB_PRINT_L(0, "populated jedec code\n");
+        trace_m25p80_populated_jedec(s);
         for (i = 0; i < s->pi->id_len; i++) {
             s->data[i] = s->pi->id[i];
         }
+        for (; i < SPI_NOR_MAX_ID_LEN; i++) {
+            s->data[i] = 0;
+        }
 
-        s->len = s->pi->id_len;
+        s->len = SPI_NOR_MAX_ID_LEN;
         s->pos = 0;
         s->state = STATE_READING_DATA;
         break;
@@ -1063,7 +1060,7 @@ static void decode_new_cmd(Flash *s, uint32_t value)
     case BULK_ERASE_60:
     case BULK_ERASE:
         if (s->write_enable) {
-            DB_PRINT_L(0, "chip erase\n");
+            trace_m25p80_chip_erase(s);
             flash_erase(s, 0, BULK_ERASE);
         } else {
             qemu_log_mask(LOG_GUEST_ERROR, "M25P80: chip erase with write "
@@ -1164,6 +1161,11 @@ static void decode_new_cmd(Flash *s, uint32_t value)
         s->quad_enable = false;
         break;
     default:
+        s->pos = 0;
+        s->len = 1;
+        s->state = STATE_READING_DATA;
+        s->data_read_loop = true;
+        s->data[0] = 0;
         qemu_log_mask(LOG_GUEST_ERROR, "M25P80: Unknown cmd %x\n", value);
         break;
     }
@@ -1184,7 +1186,7 @@ static int m25p80_cs(SSISlave *ss, bool select)
         s->data_read_loop = false;
     }
 
-    DB_PRINT_L(0, "%sselect\n", select ? "de" : "");
+    trace_m25p80_select(s, select ? "de" : "");
 
     return 0;
 }
@@ -1194,19 +1196,20 @@ static uint32_t m25p80_transfer8(SSISlave *ss, uint32_t tx)
     Flash *s = M25P80(ss);
     uint32_t r = 0;
 
+    trace_m25p80_transfer(s, s->state, s->len, s->needed_bytes, s->pos,
+                          s->cur_addr, (uint8_t)tx);
+
     switch (s->state) {
 
     case STATE_PAGE_PROGRAM:
-        DB_PRINT_L(1, "page program cur_addr=%#" PRIx32 " data=%" PRIx8 "\n",
-                   s->cur_addr, (uint8_t)tx);
+        trace_m25p80_page_program(s, s->cur_addr, (uint8_t)tx);
         flash_write8(s, s->cur_addr, (uint8_t)tx);
         s->cur_addr = (s->cur_addr + 1) & (s->size - 1);
         break;
 
     case STATE_READ:
         r = s->storage[s->cur_addr];
-        DB_PRINT_L(1, "READ 0x%" PRIx32 "=%" PRIx8 "\n", s->cur_addr,
-                   (uint8_t)r);
+        trace_m25p80_read_byte(s, s->cur_addr, (uint8_t)r);
         s->cur_addr = (s->cur_addr + 1) & (s->size - 1);
         break;
 
@@ -1244,6 +1247,7 @@ static uint32_t m25p80_transfer8(SSISlave *ss, uint32_t tx)
         }
 
         r = s->data[s->pos];
+        trace_m25p80_read_data(s, s->pos, (uint8_t)r);
         s->pos++;
         if (s->pos == s->len) {
             s->pos = 0;
@@ -1281,7 +1285,7 @@ static void m25p80_realize(SSISlave *ss, Error **errp)
             return;
         }
 
-        DB_PRINT_L(0, "Binding to IF_MTD drive\n");
+        trace_m25p80_binding(s);
         s->storage = blk_blockalign(s->blk, s->size);
 
         if (blk_pread(s->blk, 0, s->storage, s->size) != s->size) {
@@ -1289,7 +1293,7 @@ static void m25p80_realize(SSISlave *ss, Error **errp)
             return;
         }
     } else {
-        DB_PRINT_L(0, "No BDRV - binding to RAM\n");
+        trace_m25p80_binding_no_bdrv(s);
         s->storage = blk_blockalign(NULL, s->size);
         memset(s->storage, 0xFF, s->size);
     }
diff --git a/hw/block/trace-events b/hw/block/trace-events
index c03e80c2c9..f78939fa9d 100644
--- a/hw/block/trace-events
+++ b/hw/block/trace-events
@@ -134,3 +134,19 @@ xen_block_blockdev_add(char *str) "%s"
 xen_block_blockdev_del(const char *node_name) "%s"
 xen_block_device_create(unsigned int number) "%u"
 xen_block_device_destroy(unsigned int number) "%u"
+
+# m25p80.c
+m25p80_flash_erase(void *s, int offset, uint32_t len) "[%p] offset = 0x%"PRIx32", len = %u"
+m25p80_programming_zero_to_one(void *s, uint32_t addr, uint8_t prev, uint8_t data) "[%p] programming zero to one! addr=0x%"PRIx32"  0x%"PRIx8" -> 0x%"PRIx8
+m25p80_reset_done(void *s) "[%p] Reset done."
+m25p80_command_decoded(void *s, uint32_t cmd) "[%p] new command:0x%"PRIx32
+m25p80_complete_collecting(void *s, uint32_t cmd, int n, uint8_t ear, uint32_t cur_addr) "[%p] decode cmd: 0x%"PRIx32" len %d ear 0x%"PRIx8" addr 0x%"PRIx32
+m25p80_populated_jedec(void *s) "[%p] populated jedec code"
+m25p80_chip_erase(void *s) "[%p] chip erase"
+m25p80_select(void *s, const char *what) "[%p] %sselect"
+m25p80_page_program(void *s, uint32_t addr, uint8_t tx) "[%p] page program cur_addr=0x%"PRIx32" data=0x%"PRIx8
+m25p80_transfer(void *s, uint8_t state, uint32_t len, uint8_t needed, uint32_t pos, uint32_t cur_addr, uint8_t t) "[%p] Transfer state 0x%"PRIx8" len 0x%"PRIx32" needed 0x%"PRIx8" pos 0x%"PRIx32" addr 0x%"PRIx32" tx 0x%"PRIx8
+m25p80_read_byte(void *s, uint32_t addr, uint8_t v) "[%p] Read byte 0x%"PRIx32"=0x%"PRIx8
+m25p80_read_data(void *s, uint32_t pos, uint8_t v) "[%p] Read data 0x%"PRIx32"=0x%"PRIx8
+m25p80_binding(void *s) "[%p] Binding to IF_MTD drive"
+m25p80_binding_no_bdrv(void *s) "[%p] No BDRV - binding to RAM"
diff --git a/hw/char/sclpconsole-lm.c b/hw/char/sclpconsole-lm.c
index c420dc066e..2b5f37b6a2 100644
--- a/hw/char/sclpconsole-lm.c
+++ b/hw/char/sclpconsole-lm.c
@@ -31,7 +31,7 @@
 typedef struct OprtnsCommand {
     EventBufferHeader header;
     MDMSU message_unit;
-    char data[0];
+    char data[];
 } QEMU_PACKED OprtnsCommand;
 
 /* max size for line-mode data in 4K SCCB page */
diff --git a/hw/char/sclpconsole.c b/hw/char/sclpconsole.c
index 1fa124dab9..5c7664905e 100644
--- a/hw/char/sclpconsole.c
+++ b/hw/char/sclpconsole.c
@@ -25,7 +25,7 @@
 
 typedef struct ASCIIConsoleData {
     EventBufferHeader ebh;
-    char data[0];
+    char data[];
 } QEMU_PACKED ASCIIConsoleData;
 
 /* max size for ASCII data in 4K SCCB page */
diff --git a/hw/char/serial.c b/hw/char/serial.c
index 9298881af9..2ab8b69e03 100644
--- a/hw/char/serial.c
+++ b/hw/char/serial.c
@@ -997,7 +997,7 @@ static void serial_io_realize(DeviceState *dev, Error **errp)
         return;
     }
 
-    memory_region_init_io(&s->io, NULL, &serial_io_ops, s, "serial", 8);
+    memory_region_init_io(&s->io, OBJECT(dev), &serial_io_ops, s, "serial", 8);
     sysbus_init_mmio(SYS_BUS_DEVICE(sio), &s->io);
     sysbus_init_irq(SYS_BUS_DEVICE(sio), &s->irq);
 }
@@ -1106,8 +1106,9 @@ static void serial_mm_realize(DeviceState *dev, Error **errp)
         return;
     }
 
-    memory_region_init_io(&s->io, NULL, &serial_mm_ops[smm->endianness], smm,
-                          "serial", 8 << smm->regshift);
+    memory_region_init_io(&s->io, OBJECT(dev),
+                          &serial_mm_ops[smm->endianness], smm, "serial",
+                          8 << smm->regshift);
     sysbus_init_mmio(SYS_BUS_DEVICE(smm), &s->io);
     sysbus_init_irq(SYS_BUS_DEVICE(smm), &smm->serial.irq);
 }
diff --git a/hw/core/loader.c b/hw/core/loader.c
index d1b78f60cd..eeef6da9a1 100644
--- a/hw/core/loader.c
+++ b/hw/core/loader.c
@@ -1119,19 +1119,26 @@ static void rom_reset(void *unused)
 {
     Rom *rom;
 
-    /*
-     * We don't need to fill in the RAM with ROM data because we'll fill
-     * the data in during the next incoming migration in all cases.  Note
-     * that some of those RAMs can actually be modified by the guest on ARM
-     * so this is probably the only right thing to do here.
-     */
-    if (runstate_check(RUN_STATE_INMIGRATE))
-        return;
-
     QTAILQ_FOREACH(rom, &roms, next) {
         if (rom->fw_file) {
             continue;
         }
+        /*
+         * We don't need to fill in the RAM with ROM data because we'll fill
+         * the data in during the next incoming migration in all cases.  Note
+         * that some of those RAMs can actually be modified by the guest.
+         */
+        if (runstate_check(RUN_STATE_INMIGRATE)) {
+            if (rom->data && rom->isrom) {
+                /*
+                 * Free it so that a rom_reset after migration doesn't
+                 * overwrite a potentially modified 'rom'.
+                 */
+                rom_free_data(rom);
+            }
+            continue;
+        }
+
         if (rom->data == NULL) {
             continue;
         }
diff --git a/hw/core/platform-bus.c b/hw/core/platform-bus.c
index 22c5f76dd0..d494e5cec1 100644
--- a/hw/core/platform-bus.c
+++ b/hw/core/platform-bus.c
@@ -187,7 +187,8 @@ static void platform_bus_realize(DeviceState *dev, Error **errp)
     d = SYS_BUS_DEVICE(dev);
     pbus = PLATFORM_BUS_DEVICE(dev);
 
-    memory_region_init(&pbus->mmio, NULL, "platform bus", pbus->mmio_size);
+    memory_region_init(&pbus->mmio, OBJECT(dev), "platform bus",
+                       pbus->mmio_size);
     sysbus_init_mmio(d, &pbus->mmio);
 
     pbus->used_irqs = bitmap_new(pbus->num_irqs);
diff --git a/hw/display/cg3.c b/hw/display/cg3.c
index 4fb67c6b1c..a1ede10394 100644
--- a/hw/display/cg3.c
+++ b/hw/display/cg3.c
@@ -287,9 +287,8 @@ static void cg3_initfn(Object *obj)
     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
     CG3State *s = CG3(obj);
 
-    memory_region_init_ram_nomigrate(&s->rom, obj, "cg3.prom", FCODE_MAX_ROM_SIZE,
-                           &error_fatal);
-    memory_region_set_readonly(&s->rom, true);
+    memory_region_init_rom_nomigrate(&s->rom, obj, "cg3.prom",
+                                     FCODE_MAX_ROM_SIZE, &error_fatal);
     sysbus_init_mmio(sbd, &s->rom);
 
     memory_region_init_io(&s->reg, obj, &cg3_reg_ops, s, "cg3.reg",
diff --git a/hw/display/g364fb.c b/hw/display/g364fb.c
index 55185c95c6..adcba96e34 100644
--- a/hw/display/g364fb.c
+++ b/hw/display/g364fb.c
@@ -477,7 +477,8 @@ static void g364fb_init(DeviceState *dev, G364State *s)
 
     s->con = graphic_console_init(dev, 0, &g364fb_ops, s);
 
-    memory_region_init_io(&s->mem_ctrl, NULL, &g364fb_ctrl_ops, s, "ctrl", 0x180000);
+    memory_region_init_io(&s->mem_ctrl, OBJECT(dev), &g364fb_ctrl_ops, s,
+                          "ctrl", 0x180000);
     memory_region_init_ram_ptr(&s->mem_vram, NULL, "vram",
                                s->vram_size, s->vram);
     vmstate_register_ram(&s->mem_vram, dev);
diff --git a/hw/display/macfb.c b/hw/display/macfb.c
index 8bff16d535..b68faff4bb 100644
--- a/hw/display/macfb.c
+++ b/hw/display/macfb.c
@@ -362,8 +362,8 @@ static void macfb_common_realize(DeviceState *dev, MacfbState *s, Error **errp)
         return;
     }
 
-    memory_region_init_io(&s->mem_ctrl, NULL, &macfb_ctrl_ops, s, "macfb-ctrl",
-                          0x1000);
+    memory_region_init_io(&s->mem_ctrl, OBJECT(dev), &macfb_ctrl_ops, s,
+                          "macfb-ctrl", 0x1000);
 
     memory_region_init_ram_nomigrate(&s->mem_vram, OBJECT(s), "macfb-vram",
                                      MACFB_VRAM_SIZE, errp);
diff --git a/hw/display/tcx.c b/hw/display/tcx.c
index ca458f94fe..76de16e8ea 100644
--- a/hw/display/tcx.c
+++ b/hw/display/tcx.c
@@ -755,9 +755,8 @@ static void tcx_initfn(Object *obj)
     SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
     TCXState *s = TCX(obj);
 
-    memory_region_init_ram_nomigrate(&s->rom, obj, "tcx.prom", FCODE_MAX_ROM_SIZE,
-                           &error_fatal);
-    memory_region_set_readonly(&s->rom, true);
+    memory_region_init_rom_nomigrate(&s->rom, obj, "tcx.prom",
+                                     FCODE_MAX_ROM_SIZE, &error_fatal);
     sysbus_init_mmio(sbd, &s->rom);
 
     /* 2/STIP : Stippler */
diff --git a/hw/dma/i8257.c b/hw/dma/i8257.c
index bad8debae4..ef15c06d77 100644
--- a/hw/dma/i8257.c
+++ b/hw/dma/i8257.c
@@ -553,7 +553,7 @@ static void i8257_realize(DeviceState *dev, Error **errp)
     I8257State *d = I8257(dev);
     int i;
 
-    memory_region_init_io(&d->channel_io, NULL, &channel_io_ops, d,
+    memory_region_init_io(&d->channel_io, OBJECT(dev), &channel_io_ops, d,
                           "dma-chan", 8 << d->dshift);
     memory_region_add_subregion(isa_address_space_io(isa),
                                 d->base, &d->channel_io);
diff --git a/hw/dma/rc4030.c b/hw/dma/rc4030.c
index 21e2c360ac..7434d274aa 100644
--- a/hw/dma/rc4030.c
+++ b/hw/dma/rc4030.c
@@ -679,9 +679,9 @@ static void rc4030_realize(DeviceState *dev, Error **errp)
     s->periodic_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
                                      rc4030_periodic_timer, s);
 
-    memory_region_init_io(&s->iomem_chipset, NULL, &rc4030_ops, s,
+    memory_region_init_io(&s->iomem_chipset, o, &rc4030_ops, s,
                           "rc4030.chipset", 0x300);
-    memory_region_init_io(&s->iomem_jazzio, NULL, &jazzio_ops, s,
+    memory_region_init_io(&s->iomem_jazzio, o, &jazzio_ops, s,
                           "rc4030.jazzio", 0x00001000);
 
     memory_region_init_iommu(&s->dma_mr, sizeof(s->dma_mr),
diff --git a/hw/dma/soc_dma.c b/hw/dma/soc_dma.c
index c3e41581b6..3a430057f5 100644
--- a/hw/dma/soc_dma.c
+++ b/hw/dma/soc_dma.c
@@ -80,7 +80,7 @@ struct dma_s {
     } *memmap;
     int memmap_size;
 
-    struct soc_dma_ch_s ch[0];
+    struct soc_dma_ch_s ch[];
 };
 
 static void soc_dma_ch_schedule(struct soc_dma_ch_s *ch, int delay_bytes)
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index 204b6841ec..df7ad254ac 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -3094,6 +3094,12 @@ static int vtd_irte_get(IntelIOMMUState *iommu, uint16_t index,
     uint16_t mask, source_id;
     uint8_t bus, bus_max, bus_min;
 
+    if (index >= iommu->intr_size) {
+        error_report_once("%s: index too large: ind=0x%x",
+                          __func__, index);
+        return -VTD_FR_IR_INDEX_OVER;
+    }
+
     addr = iommu->intr_root + index * sizeof(*entry);
     if (dma_memory_read(&address_space_memory, addr, entry,
                         sizeof(*entry))) {
diff --git a/hw/i386/x86.c b/hw/i386/x86.c
index 7f38e6ba8b..08246523f2 100644
--- a/hw/i386/x86.c
+++ b/hw/i386/x86.c
@@ -328,7 +328,7 @@ struct setup_data {
     uint64_t next;
     uint32_t type;
     uint32_t len;
-    uint8_t data[0];
+    uint8_t data[];
 } __attribute__((packed));
 
 
diff --git a/hw/intc/spapr_xive.c b/hw/intc/spapr_xive.c
index 20c8155557..6608d7220a 100644
--- a/hw/intc/spapr_xive.c
+++ b/hw/intc/spapr_xive.c
@@ -677,8 +677,8 @@ static void spapr_xive_dt(SpaprInterruptController *intc, uint32_t nr_servers,
     uint64_t timas[2 * 2];
     /* Interrupt number ranges for the IPIs */
     uint32_t lisn_ranges[] = {
-        cpu_to_be32(0),
-        cpu_to_be32(nr_servers),
+        cpu_to_be32(SPAPR_IRQ_IPI),
+        cpu_to_be32(SPAPR_IRQ_IPI + nr_servers),
     };
     /*
      * EQ size - the sizes of pages supported by the system 4K, 64K,
diff --git a/hw/isa/lpc_ich9.c b/hw/isa/lpc_ich9.c
index cb79616ced..fbc3165d03 100644
--- a/hw/isa/lpc_ich9.c
+++ b/hw/isa/lpc_ich9.c
@@ -625,36 +625,21 @@ static const MemoryRegionOps ich9_rst_cnt_ops = {
     .endianness = DEVICE_LITTLE_ENDIAN
 };
 
-static void ich9_lpc_get_sci_int(Object *obj, Visitor *v, const char *name,
-                                 void *opaque, Error **errp)
+static void ich9_lpc_initfn(Object *obj)
 {
     ICH9LPCState *lpc = ICH9_LPC_DEVICE(obj);
-    uint32_t value = lpc->sci_gsi;
-
-    visit_type_uint32(v, name, &value, errp);
-}
 
-static void ich9_lpc_add_properties(ICH9LPCState *lpc)
-{
     static const uint8_t acpi_enable_cmd = ICH9_APM_ACPI_ENABLE;
     static const uint8_t acpi_disable_cmd = ICH9_APM_ACPI_DISABLE;
 
-    object_property_add(OBJECT(lpc), ACPI_PM_PROP_SCI_INT, "uint32",
-                        ich9_lpc_get_sci_int,
-                        NULL, NULL, NULL, NULL);
+    object_property_add_uint8_ptr(obj, ACPI_PM_PROP_SCI_INT,
+                                  &lpc->sci_gsi, OBJ_PROP_FLAG_READ, NULL);
     object_property_add_uint8_ptr(OBJECT(lpc), ACPI_PM_PROP_ACPI_ENABLE_CMD,
-                                  &acpi_enable_cmd, NULL);
+                                  &acpi_enable_cmd, OBJ_PROP_FLAG_READ, NULL);
     object_property_add_uint8_ptr(OBJECT(lpc), ACPI_PM_PROP_ACPI_DISABLE_CMD,
-                                  &acpi_disable_cmd, NULL);
-
-    ich9_pm_add_properties(OBJECT(lpc), &lpc->pm, NULL);
-}
-
-static void ich9_lpc_initfn(Object *obj)
-{
-    ICH9LPCState *lpc = ICH9_LPC_DEVICE(obj);
+                                  &acpi_disable_cmd, OBJ_PROP_FLAG_READ, NULL);
 
-    ich9_lpc_add_properties(lpc);
+    ich9_pm_add_properties(obj, &lpc->pm, NULL);
 }
 
 static void ich9_lpc_realize(PCIDevice *d, Error **errp)
diff --git a/hw/m68k/bootinfo.h b/hw/m68k/bootinfo.h
index 5f8ded2686..c954270aad 100644
--- a/hw/m68k/bootinfo.h
+++ b/hw/m68k/bootinfo.h
@@ -14,7 +14,7 @@
 struct bi_record {
     uint16_t tag;        /* tag ID */
     uint16_t size;       /* size of record */
-    uint32_t data[0];    /* data */
+    uint32_t data[];     /* data */
 };
 
 /* machine independent tags */
diff --git a/hw/m68k/q800.c b/hw/m68k/q800.c
index c5699f6f3e..81749e7ec6 100644
--- a/hw/m68k/q800.c
+++ b/hw/m68k/q800.c
@@ -399,13 +399,12 @@ static void q800_init(MachineState *machine)
         uint8_t *ptr;
         /* allocate and load BIOS */
         rom = g_malloc(sizeof(*rom));
-        memory_region_init_ram(rom, NULL, "m68k_mac.rom", MACROM_SIZE,
+        memory_region_init_rom(rom, NULL, "m68k_mac.rom", MACROM_SIZE,
                                &error_abort);
         if (bios_name == NULL) {
             bios_name = MACROM_FILENAME;
         }
         filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
-        memory_region_set_readonly(rom, true);
         memory_region_add_subregion(get_system_memory(), MACROM_ADDR, rom);
 
         /* Load MacROM binary */
diff --git a/hw/misc/edu.c b/hw/misc/edu.c
index d5e2bdbb57..ff10f5b794 100644
--- a/hw/misc/edu.c
+++ b/hw/misc/edu.c
@@ -396,21 +396,14 @@ static void pci_edu_uninit(PCIDevice *pdev)
     msi_uninit(pdev);
 }
 
-static void edu_obj_uint64(Object *obj, Visitor *v, const char *name,
-                           void *opaque, Error **errp)
-{
-    uint64_t *val = opaque;
-
-    visit_type_uint64(v, name, val, errp);
-}
-
 static void edu_instance_init(Object *obj)
 {
     EduState *edu = EDU(obj);
 
     edu->dma_mask = (1UL << 28) - 1;
-    object_property_add(obj, "dma_mask", "uint64", edu_obj_uint64,
-                    edu_obj_uint64, NULL, &edu->dma_mask, NULL);
+    object_property_add_uint64_ptr(obj, "dma_mask",
+                                   &edu->dma_mask, OBJ_PROP_FLAG_READWRITE,
+                                   NULL);
 }
 
 static void edu_class_init(ObjectClass *class, void *data)
diff --git a/hw/misc/omap_l4.c b/hw/misc/omap_l4.c
index 61b6df564a..54aeaecd69 100644
--- a/hw/misc/omap_l4.c
+++ b/hw/misc/omap_l4.c
@@ -24,7 +24,7 @@ struct omap_l4_s {
     MemoryRegion *address_space;
     hwaddr base;
     int ta_num;
-    struct omap_target_agent_s ta[0];
+    struct omap_target_agent_s ta[];
 };
 
 struct omap_l4_s *omap_l4_init(MemoryRegion *address_space,
diff --git a/hw/net/dp8393x.c b/hw/net/dp8393x.c
index 81fc13ee9f..1563c11b9e 100644
--- a/hw/net/dp8393x.c
+++ b/hw/net/dp8393x.c
@@ -986,13 +986,12 @@ static void dp8393x_realize(DeviceState *dev, Error **errp)
 
     s->watchdog = timer_new_ns(QEMU_CLOCK_VIRTUAL, dp8393x_watchdog, s);
 
-    memory_region_init_ram(&s->prom, OBJECT(dev),
-                           "dp8393x-prom", SONIC_PROM_SIZE, &local_err);
+    memory_region_init_rom(&s->prom, OBJECT(dev), "dp8393x-prom",
+                           SONIC_PROM_SIZE, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
     }
-    memory_region_set_readonly(&s->prom, true);
     prom = memory_region_get_ram_ptr(&s->prom);
     checksum = 0;
     for (i = 0; i < 6; i++) {
diff --git a/hw/net/imx_fec.c b/hw/net/imx_fec.c
index 6a124a154a..5c145a8197 100644
--- a/hw/net/imx_fec.c
+++ b/hw/net/imx_fec.c
@@ -855,13 +855,15 @@ static void imx_enet_write(IMXFECState *s, uint32_t index, uint32_t value)
         break;
     case ENET_TGSR:
         /* implement clear timer flag */
-        value = value & 0x0000000f;
+        s->regs[index] &= ~(value & 0x0000000f); /* all bits W1C */
         break;
     case ENET_TCSR0:
     case ENET_TCSR1:
     case ENET_TCSR2:
     case ENET_TCSR3:
-        value = value & 0x000000fd;
+        s->regs[index] &= ~(value & 0x00000080); /* W1C bits */
+        s->regs[index] &= ~0x0000007d; /* writable fields */
+        s->regs[index] |= (value & 0x0000007d);
         break;
     case ENET_TCCR0:
     case ENET_TCCR1:
diff --git a/hw/nvram/eeprom93xx.c b/hw/nvram/eeprom93xx.c
index 07f09549ed..ca6f591c84 100644
--- a/hw/nvram/eeprom93xx.c
+++ b/hw/nvram/eeprom93xx.c
@@ -86,7 +86,7 @@ struct _eeprom_t {
     uint8_t  addrbits;
     uint16_t size;
     uint16_t data;
-    uint16_t contents[0];
+    uint16_t contents[];
 };
 
 /* Code for saving and restoring of EEPROM state. */
diff --git a/hw/pci-host/prep.c b/hw/pci-host/prep.c
index 1aff72bec6..1a02e9a670 100644
--- a/hw/pci-host/prep.c
+++ b/hw/pci-host/prep.c
@@ -325,9 +325,8 @@ static void raven_realize(PCIDevice *d, Error **errp)
     d->config[0x0D] = 0x10; // latency_timer
     d->config[0x34] = 0x00; // capabilities_pointer
 
-    memory_region_init_ram_nomigrate(&s->bios, OBJECT(s), "bios", BIOS_SIZE,
-                           &error_fatal);
-    memory_region_set_readonly(&s->bios, true);
+    memory_region_init_rom_nomigrate(&s->bios, OBJECT(s), "bios", BIOS_SIZE,
+                                     &error_fatal);
     memory_region_add_subregion(get_system_memory(), (uint32_t)(-BIOS_SIZE),
                                 &s->bios);
     if (s->bios_name) {
diff --git a/hw/pci-host/q35.c b/hw/pci-host/q35.c
index 993f467668..2bbc90b28f 100644
--- a/hw/pci-host/q35.c
+++ b/hw/pci-host/q35.c
@@ -166,14 +166,6 @@ static void q35_host_get_pci_hole64_end(Object *obj, Visitor *v,
     visit_type_uint64(v, name, &value, errp);
 }
 
-static void q35_host_get_mmcfg_size(Object *obj, Visitor *v, const char *name,
-                                    void *opaque, Error **errp)
-{
-    PCIExpressHost *e = PCIE_HOST_BRIDGE(obj);
-
-    visit_type_uint64(v, name, &e->size, errp);
-}
-
 /*
  * NOTE: setting defaults for the mch.* fields in this table
  * doesn't work, because mch is a separate QOM object that is
@@ -214,6 +206,7 @@ static void q35_host_initfn(Object *obj)
 {
     Q35PCIHost *s = Q35_HOST_DEVICE(obj);
     PCIHostState *phb = PCI_HOST_BRIDGE(obj);
+    PCIExpressHost *pehb = PCIE_HOST_BRIDGE(obj);
 
     memory_region_init_io(&phb->conf_mem, obj, &pci_host_conf_le_ops, phb,
                           "pci-conf-idx", 4);
@@ -243,9 +236,8 @@ static void q35_host_initfn(Object *obj)
                         q35_host_get_pci_hole64_end,
                         NULL, NULL, NULL, NULL);
 
-    object_property_add(obj, PCIE_HOST_MCFG_SIZE, "uint64",
-                        q35_host_get_mmcfg_size,
-                        NULL, NULL, NULL, NULL);
+    object_property_add_uint64_ptr(obj, PCIE_HOST_MCFG_SIZE,
+                                   &pehb->size, OBJ_PROP_FLAG_READ, NULL);
 
     object_property_add_link(obj, MCH_HOST_PROP_RAM_MEM, TYPE_MEMORY_REGION,
                              (Object **) &s->mch.ram_memory,
diff --git a/hw/ppc/mac_newworld.c b/hw/ppc/mac_newworld.c
index b8189bf7a4..b2ec372958 100644
--- a/hw/ppc/mac_newworld.c
+++ b/hw/ppc/mac_newworld.c
@@ -155,13 +155,12 @@ static void ppc_core99_init(MachineState *machine)
     memory_region_add_subregion(get_system_memory(), 0, machine->ram);
 
     /* allocate and load BIOS */
-    memory_region_init_ram(bios, NULL, "ppc_core99.bios", BIOS_SIZE,
+    memory_region_init_rom(bios, NULL, "ppc_core99.bios", BIOS_SIZE,
                            &error_fatal);
 
     if (bios_name == NULL)
         bios_name = PROM_FILENAME;
     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
-    memory_region_set_readonly(bios, true);
     memory_region_add_subregion(get_system_memory(), PROM_ADDR, bios);
 
     /* Load OpenBIOS (ELF) */
diff --git a/hw/ppc/mac_oldworld.c b/hw/ppc/mac_oldworld.c
index 440c406eb4..faaa165f3f 100644
--- a/hw/ppc/mac_oldworld.c
+++ b/hw/ppc/mac_oldworld.c
@@ -129,13 +129,12 @@ static void ppc_heathrow_init(MachineState *machine)
     memory_region_add_subregion(sysmem, 0, machine->ram);
 
     /* allocate and load BIOS */
-    memory_region_init_ram(bios, NULL, "ppc_heathrow.bios", BIOS_SIZE,
+    memory_region_init_rom(bios, NULL, "ppc_heathrow.bios", BIOS_SIZE,
                            &error_fatal);
 
     if (bios_name == NULL)
         bios_name = PROM_FILENAME;
     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
-    memory_region_set_readonly(bios, true);
     memory_region_add_subregion(sysmem, PROM_ADDR, bios);
 
     /* Load OpenBIOS (ELF) */
diff --git a/hw/ppc/pnv_lpc.c b/hw/ppc/pnv_lpc.c
index f150deca34..b5ffa48dac 100644
--- a/hw/ppc/pnv_lpc.c
+++ b/hw/ppc/pnv_lpc.c
@@ -829,7 +829,7 @@ ISABus *pnv_lpc_isa_create(PnvLpcController *lpc, bool use_cpld, Error **errp)
     bool hostboot_mode = !!pnv->fw_load_addr;
 
     /* let isa_bus_new() create its own bridge on SysBus otherwise
-     * devices speficied on the command line won't find the bus and
+     * devices specified on the command line won't find the bus and
      * will fail to create.
      */
     isa_bus = isa_bus_new(NULL, &lpc->isa_mem, &lpc->isa_io, &local_err);
diff --git a/hw/ppc/ppc405_boards.c b/hw/ppc/ppc405_boards.c
index de93c40f1a..e6bffb9e1a 100644
--- a/hw/ppc/ppc405_boards.c
+++ b/hw/ppc/ppc405_boards.c
@@ -199,7 +199,7 @@ static void ref405ep_init(MachineState *machine)
 #endif
     {
         bios = g_new(MemoryRegion, 1);
-        memory_region_init_ram(bios, NULL, "ef405ep.bios", BIOS_SIZE,
+        memory_region_init_rom(bios, NULL, "ef405ep.bios", BIOS_SIZE,
                                &error_fatal);
 
         if (bios_name == NULL)
@@ -223,7 +223,6 @@ static void ref405ep_init(MachineState *machine)
             /* Avoid an uninitialized variable warning */
             bios_size = -1;
         }
-        memory_region_set_readonly(bios, true);
     }
     /* Register FPGA */
     ref405ep_fpga_init(sysmem, 0xF0300000);
@@ -471,7 +470,7 @@ static void taihu_405ep_init(MachineState *machine)
         if (bios_name == NULL)
             bios_name = BIOS_FILENAME;
         bios = g_new(MemoryRegion, 1);
-        memory_region_init_ram(bios, NULL, "taihu_405ep.bios", BIOS_SIZE,
+        memory_region_init_rom(bios, NULL, "taihu_405ep.bios", BIOS_SIZE,
                                &error_fatal);
         filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
         if (filename) {
@@ -489,7 +488,6 @@ static void taihu_405ep_init(MachineState *machine)
             error_report("Could not load PowerPC BIOS '%s'", bios_name);
             exit(1);
         }
-        memory_region_set_readonly(bios, true);
     }
     /* Register Linux flash */
     dinfo = drive_get(IF_PFLASH, 0, fl_idx);
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index cc10798be4..9a2bd501aa 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -103,7 +103,7 @@
 #define FW_OVERHEAD             0x2800000
 #define KERNEL_LOAD_ADDR        FW_MAX_SIZE
 
-#define MIN_RMA_SLOF            128UL
+#define MIN_RMA_SLOF            (128 * MiB)
 
 #define PHANDLE_INTC            0x00001111
 
@@ -217,10 +217,9 @@ static int spapr_fixup_cpu_numa_dt(void *fdt, int offset, PowerPCCPU *cpu)
                           sizeof(associativity));
 }
 
-/* Populate the "ibm,pa-features" property */
-static void spapr_populate_pa_features(SpaprMachineState *spapr,
-                                       PowerPCCPU *cpu,
-                                       void *fdt, int offset)
+static void spapr_dt_pa_features(SpaprMachineState *spapr,
+                                 PowerPCCPU *cpu,
+                                 void *fdt, int offset)
 {
     uint8_t pa_features_206[] = { 6, 0,
         0xf6, 0x1f, 0xc7, 0x00, 0x80, 0xc0 };
@@ -315,8 +314,8 @@ static void add_str(GString *s, const gchar *s1)
     g_string_append_len(s, s1, strlen(s1) + 1);
 }
 
-static int spapr_populate_memory_node(void *fdt, int nodeid, hwaddr start,
-                                       hwaddr size)
+static int spapr_dt_memory_node(void *fdt, int nodeid, hwaddr start,
+                                hwaddr size)
 {
     uint32_t associativity[] = {
         cpu_to_be32(0x4), /* length */
@@ -341,257 +340,6 @@ static int spapr_populate_memory_node(void *fdt, int nodeid, hwaddr start,
     return off;
 }
 
-static int spapr_populate_memory(SpaprMachineState *spapr, void *fdt)
-{
-    MachineState *machine = MACHINE(spapr);
-    hwaddr mem_start, node_size;
-    int i, nb_nodes = machine->numa_state->num_nodes;
-    NodeInfo *nodes = machine->numa_state->nodes;
-
-    for (i = 0, mem_start = 0; i < nb_nodes; ++i) {
-        if (!nodes[i].node_mem) {
-            continue;
-        }
-        if (mem_start >= machine->ram_size) {
-            node_size = 0;
-        } else {
-            node_size = nodes[i].node_mem;
-            if (node_size > machine->ram_size - mem_start) {
-                node_size = machine->ram_size - mem_start;
-            }
-        }
-        if (!mem_start) {
-            /* spapr_machine_init() checks for rma_size <= node0_size
-             * already */
-            spapr_populate_memory_node(fdt, i, 0, spapr->rma_size);
-            mem_start += spapr->rma_size;
-            node_size -= spapr->rma_size;
-        }
-        for ( ; node_size; ) {
-            hwaddr sizetmp = pow2floor(node_size);
-
-            /* mem_start != 0 here */
-            if (ctzl(mem_start) < ctzl(sizetmp)) {
-                sizetmp = 1ULL << ctzl(mem_start);
-            }
-
-            spapr_populate_memory_node(fdt, i, mem_start, sizetmp);
-            node_size -= sizetmp;
-            mem_start += sizetmp;
-        }
-    }
-
-    return 0;
-}
-
-static void spapr_populate_cpu_dt(CPUState *cs, void *fdt, int offset,
-                                  SpaprMachineState *spapr)
-{
-    MachineState *ms = MACHINE(spapr);
-    PowerPCCPU *cpu = POWERPC_CPU(cs);
-    CPUPPCState *env = &cpu->env;
-    PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs);
-    int index = spapr_get_vcpu_id(cpu);
-    uint32_t segs[] = {cpu_to_be32(28), cpu_to_be32(40),
-                       0xffffffff, 0xffffffff};
-    uint32_t tbfreq = kvm_enabled() ? kvmppc_get_tbfreq()
-        : SPAPR_TIMEBASE_FREQ;
-    uint32_t cpufreq = kvm_enabled() ? kvmppc_get_clockfreq() : 1000000000;
-    uint32_t page_sizes_prop[64];
-    size_t page_sizes_prop_size;
-    unsigned int smp_threads = ms->smp.threads;
-    uint32_t vcpus_per_socket = smp_threads * ms->smp.cores;
-    uint32_t pft_size_prop[] = {0, cpu_to_be32(spapr->htab_shift)};
-    int compat_smt = MIN(smp_threads, ppc_compat_max_vthreads(cpu));
-    SpaprDrc *drc;
-    int drc_index;
-    uint32_t radix_AP_encodings[PPC_PAGE_SIZES_MAX_SZ];
-    int i;
-
-    drc = spapr_drc_by_id(TYPE_SPAPR_DRC_CPU, index);
-    if (drc) {
-        drc_index = spapr_drc_index(drc);
-        _FDT((fdt_setprop_cell(fdt, offset, "ibm,my-drc-index", drc_index)));
-    }
-
-    _FDT((fdt_setprop_cell(fdt, offset, "reg", index)));
-    _FDT((fdt_setprop_string(fdt, offset, "device_type", "cpu")));
-
-    _FDT((fdt_setprop_cell(fdt, offset, "cpu-version", env->spr[SPR_PVR])));
-    _FDT((fdt_setprop_cell(fdt, offset, "d-cache-block-size",
-                           env->dcache_line_size)));
-    _FDT((fdt_setprop_cell(fdt, offset, "d-cache-line-size",
-                           env->dcache_line_size)));
-    _FDT((fdt_setprop_cell(fdt, offset, "i-cache-block-size",
-                           env->icache_line_size)));
-    _FDT((fdt_setprop_cell(fdt, offset, "i-cache-line-size",
-                           env->icache_line_size)));
-
-    if (pcc->l1_dcache_size) {
-        _FDT((fdt_setprop_cell(fdt, offset, "d-cache-size",
-                               pcc->l1_dcache_size)));
-    } else {
-        warn_report("Unknown L1 dcache size for cpu");
-    }
-    if (pcc->l1_icache_size) {
-        _FDT((fdt_setprop_cell(fdt, offset, "i-cache-size",
-                               pcc->l1_icache_size)));
-    } else {
-        warn_report("Unknown L1 icache size for cpu");
-    }
-
-    _FDT((fdt_setprop_cell(fdt, offset, "timebase-frequency", tbfreq)));
-    _FDT((fdt_setprop_cell(fdt, offset, "clock-frequency", cpufreq)));
-    _FDT((fdt_setprop_cell(fdt, offset, "slb-size", cpu->hash64_opts->slb_size)));
-    _FDT((fdt_setprop_cell(fdt, offset, "ibm,slb-size", cpu->hash64_opts->slb_size)));
-    _FDT((fdt_setprop_string(fdt, offset, "status", "okay")));
-    _FDT((fdt_setprop(fdt, offset, "64-bit", NULL, 0)));
-
-    if (env->spr_cb[SPR_PURR].oea_read) {
-        _FDT((fdt_setprop_cell(fdt, offset, "ibm,purr", 1)));
-    }
-    if (env->spr_cb[SPR_SPURR].oea_read) {
-        _FDT((fdt_setprop_cell(fdt, offset, "ibm,spurr", 1)));
-    }
-
-    if (ppc_hash64_has(cpu, PPC_HASH64_1TSEG)) {
-        _FDT((fdt_setprop(fdt, offset, "ibm,processor-segment-sizes",
-                          segs, sizeof(segs))));
-    }
-
-    /* Advertise VSX (vector extensions) if available
-     *   1               == VMX / Altivec available
-     *   2               == VSX available
-     *
-     * Only CPUs for which we create core types in spapr_cpu_core.c
-     * are possible, and all of those have VMX */
-    if (spapr_get_cap(spapr, SPAPR_CAP_VSX) != 0) {
-        _FDT((fdt_setprop_cell(fdt, offset, "ibm,vmx", 2)));
-    } else {
-        _FDT((fdt_setprop_cell(fdt, offset, "ibm,vmx", 1)));
-    }
-
-    /* Advertise DFP (Decimal Floating Point) if available
-     *   0 / no property == no DFP
-     *   1               == DFP available */
-    if (spapr_get_cap(spapr, SPAPR_CAP_DFP) != 0) {
-        _FDT((fdt_setprop_cell(fdt, offset, "ibm,dfp", 1)));
-    }
-
-    page_sizes_prop_size = ppc_create_page_sizes_prop(cpu, page_sizes_prop,
-                                                      sizeof(page_sizes_prop));
-    if (page_sizes_prop_size) {
-        _FDT((fdt_setprop(fdt, offset, "ibm,segment-page-sizes",
-                          page_sizes_prop, page_sizes_prop_size)));
-    }
-
-    spapr_populate_pa_features(spapr, cpu, fdt, offset);
-
-    _FDT((fdt_setprop_cell(fdt, offset, "ibm,chip-id",
-                           cs->cpu_index / vcpus_per_socket)));
-
-    _FDT((fdt_setprop(fdt, offset, "ibm,pft-size",
-                      pft_size_prop, sizeof(pft_size_prop))));
-
-    if (ms->numa_state->num_nodes > 1) {
-        _FDT(spapr_fixup_cpu_numa_dt(fdt, offset, cpu));
-    }
-
-    _FDT(spapr_fixup_cpu_smt_dt(fdt, offset, cpu, compat_smt));
-
-    if (pcc->radix_page_info) {
-        for (i = 0; i < pcc->radix_page_info->count; i++) {
-            radix_AP_encodings[i] =
-                cpu_to_be32(pcc->radix_page_info->entries[i]);
-        }
-        _FDT((fdt_setprop(fdt, offset, "ibm,processor-radix-AP-encodings",
-                          radix_AP_encodings,
-                          pcc->radix_page_info->count *
-                          sizeof(radix_AP_encodings[0]))));
-    }
-
-    /*
-     * We set this property to let the guest know that it can use the large
-     * decrementer and its width in bits.
-     */
-    if (spapr_get_cap(spapr, SPAPR_CAP_LARGE_DECREMENTER) != SPAPR_CAP_OFF)
-        _FDT((fdt_setprop_u32(fdt, offset, "ibm,dec-bits",
-                              pcc->lrg_decr_bits)));
-}
-
-static void spapr_populate_cpus_dt_node(void *fdt, SpaprMachineState *spapr)
-{
-    CPUState **rev;
-    CPUState *cs;
-    int n_cpus;
-    int cpus_offset;
-    char *nodename;
-    int i;
-
-    cpus_offset = fdt_add_subnode(fdt, 0, "cpus");
-    _FDT(cpus_offset);
-    _FDT((fdt_setprop_cell(fdt, cpus_offset, "#address-cells", 0x1)));
-    _FDT((fdt_setprop_cell(fdt, cpus_offset, "#size-cells", 0x0)));
-
-    /*
-     * We walk the CPUs in reverse order to ensure that CPU DT nodes
-     * created by fdt_add_subnode() end up in the right order in FDT
-     * for the guest kernel the enumerate the CPUs correctly.
-     *
-     * The CPU list cannot be traversed in reverse order, so we need
-     * to do extra work.
-     */
-    n_cpus = 0;
-    rev = NULL;
-    CPU_FOREACH(cs) {
-        rev = g_renew(CPUState *, rev, n_cpus + 1);
-        rev[n_cpus++] = cs;
-    }
-
-    for (i = n_cpus - 1; i >= 0; i--) {
-        CPUState *cs = rev[i];
-        PowerPCCPU *cpu = POWERPC_CPU(cs);
-        int index = spapr_get_vcpu_id(cpu);
-        DeviceClass *dc = DEVICE_GET_CLASS(cs);
-        int offset;
-
-        if (!spapr_is_thread0_in_vcore(spapr, cpu)) {
-            continue;
-        }
-
-        nodename = g_strdup_printf("%s@%x", dc->fw_name, index);
-        offset = fdt_add_subnode(fdt, cpus_offset, nodename);
-        g_free(nodename);
-        _FDT(offset);
-        spapr_populate_cpu_dt(cs, fdt, offset, spapr);
-    }
-
-    g_free(rev);
-}
-
-static int spapr_rng_populate_dt(void *fdt)
-{
-    int node;
-    int ret;
-
-    node = qemu_fdt_add_subnode(fdt, "/ibm,platform-facilities");
-    if (node <= 0) {
-        return -1;
-    }
-    ret = fdt_setprop_string(fdt, node, "device_type",
-                             "ibm,platform-facilities");
-    ret |= fdt_setprop_cell(fdt, node, "#address-cells", 0x1);
-    ret |= fdt_setprop_cell(fdt, node, "#size-cells", 0x0);
-
-    node = fdt_add_subnode(fdt, node, "ibm,random-v1");
-    if (node <= 0) {
-        return -1;
-    }
-    ret |= fdt_setprop_string(fdt, node, "compatible", "ibm,random");
-
-    return ret ? -1 : 0;
-}
-
 static uint32_t spapr_pc_dimm_node(MemoryDeviceInfoList *list, ram_addr_t addr)
 {
     MemoryDeviceInfoList *info;
@@ -642,9 +390,8 @@ spapr_get_drconf_cell(uint32_t seq_lmbs, uint64_t base_addr,
     return elem;
 }
 
-/* ibm,dynamic-memory-v2 */
-static int spapr_populate_drmem_v2(SpaprMachineState *spapr, void *fdt,
-                                   int offset, MemoryDeviceInfoList *dimms)
+static int spapr_dt_dynamic_memory_v2(SpaprMachineState *spapr, void *fdt,
+                                      int offset, MemoryDeviceInfoList *dimms)
 {
     MachineState *machine = MACHINE(spapr);
     uint8_t *int_buf, *cur_index;
@@ -735,8 +482,7 @@ static int spapr_populate_drmem_v2(SpaprMachineState *spapr, void *fdt,
     return 0;
 }
 
-/* ibm,dynamic-memory */
-static int spapr_populate_drmem_v1(SpaprMachineState *spapr, void *fdt,
+static int spapr_dt_dynamic_memory(SpaprMachineState *spapr, void *fdt,
                                    int offset, MemoryDeviceInfoList *dimms)
 {
     MachineState *machine = MACHINE(spapr);
@@ -805,7 +551,8 @@ static int spapr_populate_drmem_v1(SpaprMachineState *spapr, void *fdt,
  * Refer to docs/specs/ppc-spapr-hotplug.txt for the documentation
  * of this device tree node.
  */
-static int spapr_populate_drconf_memory(SpaprMachineState *spapr, void *fdt)
+static int spapr_dt_dynamic_reconfiguration_memory(SpaprMachineState *spapr,
+                                                   void *fdt)
 {
     MachineState *machine = MACHINE(spapr);
     int nb_numa_nodes = machine->numa_state->num_nodes;
@@ -844,9 +591,9 @@ static int spapr_populate_drconf_memory(SpaprMachineState *spapr, void *fdt)
     /* ibm,dynamic-memory or ibm,dynamic-memory-v2 */
     dimms = qmp_memory_device_list();
     if (spapr_ovec_test(spapr->ov5_cas, OV5_DRMEM_V2)) {
-        ret = spapr_populate_drmem_v2(spapr, fdt, offset, dimms);
+        ret = spapr_dt_dynamic_memory_v2(spapr, fdt, offset, dimms);
     } else {
-        ret = spapr_populate_drmem_v1(spapr, fdt, offset, dimms);
+        ret = spapr_dt_dynamic_memory(spapr, fdt, offset, dimms);
     }
     qapi_free_MemoryDeviceInfoList(dimms);
 
@@ -877,30 +624,267 @@ static int spapr_populate_drconf_memory(SpaprMachineState *spapr, void *fdt)
     return ret;
 }
 
-static int spapr_dt_cas_updates(SpaprMachineState *spapr, void *fdt,
-                                SpaprOptionVector *ov5_updates)
+static int spapr_dt_memory(SpaprMachineState *spapr, void *fdt)
 {
+    MachineState *machine = MACHINE(spapr);
     SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr);
-    int ret = 0, offset;
+    hwaddr mem_start, node_size;
+    int i, nb_nodes = machine->numa_state->num_nodes;
+    NodeInfo *nodes = machine->numa_state->nodes;
+
+    for (i = 0, mem_start = 0; i < nb_nodes; ++i) {
+        if (!nodes[i].node_mem) {
+            continue;
+        }
+        if (mem_start >= machine->ram_size) {
+            node_size = 0;
+        } else {
+            node_size = nodes[i].node_mem;
+            if (node_size > machine->ram_size - mem_start) {
+                node_size = machine->ram_size - mem_start;
+            }
+        }
+        if (!mem_start) {
+            /* spapr_machine_init() checks for rma_size <= node0_size
+             * already */
+            spapr_dt_memory_node(fdt, i, 0, spapr->rma_size);
+            mem_start += spapr->rma_size;
+            node_size -= spapr->rma_size;
+        }
+        for ( ; node_size; ) {
+            hwaddr sizetmp = pow2floor(node_size);
+
+            /* mem_start != 0 here */
+            if (ctzl(mem_start) < ctzl(sizetmp)) {
+                sizetmp = 1ULL << ctzl(mem_start);
+            }
+
+            spapr_dt_memory_node(fdt, i, mem_start, sizetmp);
+            node_size -= sizetmp;
+            mem_start += sizetmp;
+        }
+    }
 
     /* Generate ibm,dynamic-reconfiguration-memory node if required */
-    if (spapr_ovec_test(ov5_updates, OV5_DRCONF_MEMORY)) {
+    if (spapr_ovec_test(spapr->ov5_cas, OV5_DRCONF_MEMORY)) {
+        int ret;
+
         g_assert(smc->dr_lmb_enabled);
-        ret = spapr_populate_drconf_memory(spapr, fdt);
+        ret = spapr_dt_dynamic_reconfiguration_memory(spapr, fdt);
         if (ret) {
             return ret;
         }
     }
 
-    offset = fdt_path_offset(fdt, "/chosen");
-    if (offset < 0) {
-        offset = fdt_add_subnode(fdt, 0, "chosen");
-        if (offset < 0) {
-            return offset;
+    return 0;
+}
+
+static void spapr_dt_cpu(CPUState *cs, void *fdt, int offset,
+                         SpaprMachineState *spapr)
+{
+    MachineState *ms = MACHINE(spapr);
+    PowerPCCPU *cpu = POWERPC_CPU(cs);
+    CPUPPCState *env = &cpu->env;
+    PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs);
+    int index = spapr_get_vcpu_id(cpu);
+    uint32_t segs[] = {cpu_to_be32(28), cpu_to_be32(40),
+                       0xffffffff, 0xffffffff};
+    uint32_t tbfreq = kvm_enabled() ? kvmppc_get_tbfreq()
+        : SPAPR_TIMEBASE_FREQ;
+    uint32_t cpufreq = kvm_enabled() ? kvmppc_get_clockfreq() : 1000000000;
+    uint32_t page_sizes_prop[64];
+    size_t page_sizes_prop_size;
+    unsigned int smp_threads = ms->smp.threads;
+    uint32_t vcpus_per_socket = smp_threads * ms->smp.cores;
+    uint32_t pft_size_prop[] = {0, cpu_to_be32(spapr->htab_shift)};
+    int compat_smt = MIN(smp_threads, ppc_compat_max_vthreads(cpu));
+    SpaprDrc *drc;
+    int drc_index;
+    uint32_t radix_AP_encodings[PPC_PAGE_SIZES_MAX_SZ];
+    int i;
+
+    drc = spapr_drc_by_id(TYPE_SPAPR_DRC_CPU, index);
+    if (drc) {
+        drc_index = spapr_drc_index(drc);
+        _FDT((fdt_setprop_cell(fdt, offset, "ibm,my-drc-index", drc_index)));
+    }
+
+    _FDT((fdt_setprop_cell(fdt, offset, "reg", index)));
+    _FDT((fdt_setprop_string(fdt, offset, "device_type", "cpu")));
+
+    _FDT((fdt_setprop_cell(fdt, offset, "cpu-version", env->spr[SPR_PVR])));
+    _FDT((fdt_setprop_cell(fdt, offset, "d-cache-block-size",
+                           env->dcache_line_size)));
+    _FDT((fdt_setprop_cell(fdt, offset, "d-cache-line-size",
+                           env->dcache_line_size)));
+    _FDT((fdt_setprop_cell(fdt, offset, "i-cache-block-size",
+                           env->icache_line_size)));
+    _FDT((fdt_setprop_cell(fdt, offset, "i-cache-line-size",
+                           env->icache_line_size)));
+
+    if (pcc->l1_dcache_size) {
+        _FDT((fdt_setprop_cell(fdt, offset, "d-cache-size",
+                               pcc->l1_dcache_size)));
+    } else {
+        warn_report("Unknown L1 dcache size for cpu");
+    }
+    if (pcc->l1_icache_size) {
+        _FDT((fdt_setprop_cell(fdt, offset, "i-cache-size",
+                               pcc->l1_icache_size)));
+    } else {
+        warn_report("Unknown L1 icache size for cpu");
+    }
+
+    _FDT((fdt_setprop_cell(fdt, offset, "timebase-frequency", tbfreq)));
+    _FDT((fdt_setprop_cell(fdt, offset, "clock-frequency", cpufreq)));
+    _FDT((fdt_setprop_cell(fdt, offset, "slb-size", cpu->hash64_opts->slb_size)));
+    _FDT((fdt_setprop_cell(fdt, offset, "ibm,slb-size", cpu->hash64_opts->slb_size)));
+    _FDT((fdt_setprop_string(fdt, offset, "status", "okay")));
+    _FDT((fdt_setprop(fdt, offset, "64-bit", NULL, 0)));
+
+    if (env->spr_cb[SPR_PURR].oea_read) {
+        _FDT((fdt_setprop_cell(fdt, offset, "ibm,purr", 1)));
+    }
+    if (env->spr_cb[SPR_SPURR].oea_read) {
+        _FDT((fdt_setprop_cell(fdt, offset, "ibm,spurr", 1)));
+    }
+
+    if (ppc_hash64_has(cpu, PPC_HASH64_1TSEG)) {
+        _FDT((fdt_setprop(fdt, offset, "ibm,processor-segment-sizes",
+                          segs, sizeof(segs))));
+    }
+
+    /* Advertise VSX (vector extensions) if available
+     *   1               == VMX / Altivec available
+     *   2               == VSX available
+     *
+     * Only CPUs for which we create core types in spapr_cpu_core.c
+     * are possible, and all of those have VMX */
+    if (spapr_get_cap(spapr, SPAPR_CAP_VSX) != 0) {
+        _FDT((fdt_setprop_cell(fdt, offset, "ibm,vmx", 2)));
+    } else {
+        _FDT((fdt_setprop_cell(fdt, offset, "ibm,vmx", 1)));
+    }
+
+    /* Advertise DFP (Decimal Floating Point) if available
+     *   0 / no property == no DFP
+     *   1               == DFP available */
+    if (spapr_get_cap(spapr, SPAPR_CAP_DFP) != 0) {
+        _FDT((fdt_setprop_cell(fdt, offset, "ibm,dfp", 1)));
+    }
+
+    page_sizes_prop_size = ppc_create_page_sizes_prop(cpu, page_sizes_prop,
+                                                      sizeof(page_sizes_prop));
+    if (page_sizes_prop_size) {
+        _FDT((fdt_setprop(fdt, offset, "ibm,segment-page-sizes",
+                          page_sizes_prop, page_sizes_prop_size)));
+    }
+
+    spapr_dt_pa_features(spapr, cpu, fdt, offset);
+
+    _FDT((fdt_setprop_cell(fdt, offset, "ibm,chip-id",
+                           cs->cpu_index / vcpus_per_socket)));
+
+    _FDT((fdt_setprop(fdt, offset, "ibm,pft-size",
+                      pft_size_prop, sizeof(pft_size_prop))));
+
+    if (ms->numa_state->num_nodes > 1) {
+        _FDT(spapr_fixup_cpu_numa_dt(fdt, offset, cpu));
+    }
+
+    _FDT(spapr_fixup_cpu_smt_dt(fdt, offset, cpu, compat_smt));
+
+    if (pcc->radix_page_info) {
+        for (i = 0; i < pcc->radix_page_info->count; i++) {
+            radix_AP_encodings[i] =
+                cpu_to_be32(pcc->radix_page_info->entries[i]);
+        }
+        _FDT((fdt_setprop(fdt, offset, "ibm,processor-radix-AP-encodings",
+                          radix_AP_encodings,
+                          pcc->radix_page_info->count *
+                          sizeof(radix_AP_encodings[0]))));
+    }
+
+    /*
+     * We set this property to let the guest know that it can use the large
+     * decrementer and its width in bits.
+     */
+    if (spapr_get_cap(spapr, SPAPR_CAP_LARGE_DECREMENTER) != SPAPR_CAP_OFF)
+        _FDT((fdt_setprop_u32(fdt, offset, "ibm,dec-bits",
+                              pcc->lrg_decr_bits)));
+}
+
+static void spapr_dt_cpus(void *fdt, SpaprMachineState *spapr)
+{
+    CPUState **rev;
+    CPUState *cs;
+    int n_cpus;
+    int cpus_offset;
+    char *nodename;
+    int i;
+
+    cpus_offset = fdt_add_subnode(fdt, 0, "cpus");
+    _FDT(cpus_offset);
+    _FDT((fdt_setprop_cell(fdt, cpus_offset, "#address-cells", 0x1)));
+    _FDT((fdt_setprop_cell(fdt, cpus_offset, "#size-cells", 0x0)));
+
+    /*
+     * We walk the CPUs in reverse order to ensure that CPU DT nodes
+     * created by fdt_add_subnode() end up in the right order in FDT
+     * for the guest kernel the enumerate the CPUs correctly.
+     *
+     * The CPU list cannot be traversed in reverse order, so we need
+     * to do extra work.
+     */
+    n_cpus = 0;
+    rev = NULL;
+    CPU_FOREACH(cs) {
+        rev = g_renew(CPUState *, rev, n_cpus + 1);
+        rev[n_cpus++] = cs;
+    }
+
+    for (i = n_cpus - 1; i >= 0; i--) {
+        CPUState *cs = rev[i];
+        PowerPCCPU *cpu = POWERPC_CPU(cs);
+        int index = spapr_get_vcpu_id(cpu);
+        DeviceClass *dc = DEVICE_GET_CLASS(cs);
+        int offset;
+
+        if (!spapr_is_thread0_in_vcore(spapr, cpu)) {
+            continue;
         }
+
+        nodename = g_strdup_printf("%s@%x", dc->fw_name, index);
+        offset = fdt_add_subnode(fdt, cpus_offset, nodename);
+        g_free(nodename);
+        _FDT(offset);
+        spapr_dt_cpu(cs, fdt, offset, spapr);
+    }
+
+    g_free(rev);
+}
+
+static int spapr_dt_rng(void *fdt)
+{
+    int node;
+    int ret;
+
+    node = qemu_fdt_add_subnode(fdt, "/ibm,platform-facilities");
+    if (node <= 0) {
+        return -1;
+    }
+    ret = fdt_setprop_string(fdt, node, "device_type",
+                             "ibm,platform-facilities");
+    ret |= fdt_setprop_cell(fdt, node, "#address-cells", 0x1);
+    ret |= fdt_setprop_cell(fdt, node, "#size-cells", 0x0);
+
+    node = fdt_add_subnode(fdt, node, "ibm,random-v1");
+    if (node <= 0) {
+        return -1;
     }
-    return spapr_ovec_populate_dt(fdt, offset, spapr->ov5_cas,
-                                  "ibm,architecture-vec-5");
+    ret |= fdt_setprop_string(fdt, node, "compatible", "ibm,random");
+
+    return ret ? -1 : 0;
 }
 
 static void spapr_dt_rtas(SpaprMachineState *spapr, void *fdt)
@@ -967,6 +951,29 @@ static void spapr_dt_rtas(SpaprMachineState *spapr, void *fdt)
     _FDT(fdt_setprop(fdt, rtas, "ibm,max-associativity-domains",
                      maxdomains, sizeof(maxdomains)));
 
+    /*
+     * FWNMI reserves RTAS_ERROR_LOG_MAX for the machine check error log,
+     * and 16 bytes per CPU for system reset error log plus an extra 8 bytes.
+     *
+     * The system reset requirements are driven by existing Linux and PowerVM
+     * implementation which (contrary to PAPR) saves r3 in the error log
+     * structure like machine check, so Linux expects to find the saved r3
+     * value at the address in r3 upon FWNMI-enabled sreset interrupt (and
+     * does not look at the error value).
+     *
+     * System reset interrupts are not subject to interlock like machine
+     * check, so this memory area could be corrupted if the sreset is
+     * interrupted by a machine check (or vice versa) if it was shared. To
+     * prevent this, system reset uses per-CPU areas for the sreset save
+     * area. A system reset that interrupts a system reset handler could
+     * still overwrite this area, but Linux doesn't try to recover in that
+     * case anyway.
+     *
+     * The extra 8 bytes is required because Linux's FWNMI error log check
+     * is off-by-one.
+     */
+    _FDT(fdt_setprop_cell(fdt, rtas, "rtas-size", RTAS_ERROR_LOG_MAX +
+			  ms->smp.max_cpus * sizeof(uint64_t)*2 + sizeof(uint64_t)));
     _FDT(fdt_setprop_cell(fdt, rtas, "rtas-error-log-max",
                           RTAS_ERROR_LOG_MAX));
     _FDT(fdt_setprop_cell(fdt, rtas, "rtas-event-scan-rate",
@@ -1040,81 +1047,91 @@ static void spapr_dt_ov5_platform_support(SpaprMachineState *spapr, void *fdt,
                      val, sizeof(val)));
 }
 
-static void spapr_dt_chosen(SpaprMachineState *spapr, void *fdt)
+static void spapr_dt_chosen(SpaprMachineState *spapr, void *fdt, bool reset)
 {
     MachineState *machine = MACHINE(spapr);
     SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(machine);
     int chosen;
-    const char *boot_device = machine->boot_order;
-    char *stdout_path = spapr_vio_stdout_path(spapr->vio_bus);
-    size_t cb = 0;
-    char *bootlist = get_boot_devices_list(&cb);
 
     _FDT(chosen = fdt_add_subnode(fdt, 0, "chosen"));
 
-    if (machine->kernel_cmdline && machine->kernel_cmdline[0]) {
-        _FDT(fdt_setprop_string(fdt, chosen, "bootargs",
-                                machine->kernel_cmdline));
-    }
-    if (spapr->initrd_size) {
-        _FDT(fdt_setprop_cell(fdt, chosen, "linux,initrd-start",
-                              spapr->initrd_base));
-        _FDT(fdt_setprop_cell(fdt, chosen, "linux,initrd-end",
-                              spapr->initrd_base + spapr->initrd_size));
-    }
+    if (reset) {
+        const char *boot_device = machine->boot_order;
+        char *stdout_path = spapr_vio_stdout_path(spapr->vio_bus);
+        size_t cb = 0;
+        char *bootlist = get_boot_devices_list(&cb);
+
+        if (machine->kernel_cmdline && machine->kernel_cmdline[0]) {
+            _FDT(fdt_setprop_string(fdt, chosen, "bootargs",
+                                    machine->kernel_cmdline));
+        }
+
+        if (spapr->initrd_size) {
+            _FDT(fdt_setprop_cell(fdt, chosen, "linux,initrd-start",
+                                  spapr->initrd_base));
+            _FDT(fdt_setprop_cell(fdt, chosen, "linux,initrd-end",
+                                  spapr->initrd_base + spapr->initrd_size));
+        }
 
-    if (spapr->kernel_size) {
-        uint64_t kprop[2] = { cpu_to_be64(spapr->kernel_addr),
-                              cpu_to_be64(spapr->kernel_size) };
+        if (spapr->kernel_size) {
+            uint64_t kprop[2] = { cpu_to_be64(spapr->kernel_addr),
+                                  cpu_to_be64(spapr->kernel_size) };
 
-        _FDT(fdt_setprop(fdt, chosen, "qemu,boot-kernel",
+            _FDT(fdt_setprop(fdt, chosen, "qemu,boot-kernel",
                          &kprop, sizeof(kprop)));
-        if (spapr->kernel_le) {
-            _FDT(fdt_setprop(fdt, chosen, "qemu,boot-kernel-le", NULL, 0));
+            if (spapr->kernel_le) {
+                _FDT(fdt_setprop(fdt, chosen, "qemu,boot-kernel-le", NULL, 0));
+            }
         }
-    }
-    if (boot_menu) {
-        _FDT((fdt_setprop_cell(fdt, chosen, "qemu,boot-menu", boot_menu)));
-    }
-    _FDT(fdt_setprop_cell(fdt, chosen, "qemu,graphic-width", graphic_width));
-    _FDT(fdt_setprop_cell(fdt, chosen, "qemu,graphic-height", graphic_height));
-    _FDT(fdt_setprop_cell(fdt, chosen, "qemu,graphic-depth", graphic_depth));
+        if (boot_menu) {
+            _FDT((fdt_setprop_cell(fdt, chosen, "qemu,boot-menu", boot_menu)));
+        }
+        _FDT(fdt_setprop_cell(fdt, chosen, "qemu,graphic-width", graphic_width));
+        _FDT(fdt_setprop_cell(fdt, chosen, "qemu,graphic-height", graphic_height));
+        _FDT(fdt_setprop_cell(fdt, chosen, "qemu,graphic-depth", graphic_depth));
 
-    if (cb && bootlist) {
-        int i;
+        if (cb && bootlist) {
+            int i;
 
-        for (i = 0; i < cb; i++) {
-            if (bootlist[i] == '\n') {
-                bootlist[i] = ' ';
+            for (i = 0; i < cb; i++) {
+                if (bootlist[i] == '\n') {
+                    bootlist[i] = ' ';
+                }
             }
+            _FDT(fdt_setprop_string(fdt, chosen, "qemu,boot-list", bootlist));
         }
-        _FDT(fdt_setprop_string(fdt, chosen, "qemu,boot-list", bootlist));
-    }
 
-    if (boot_device && strlen(boot_device)) {
-        _FDT(fdt_setprop_string(fdt, chosen, "qemu,boot-device", boot_device));
-    }
+        if (boot_device && strlen(boot_device)) {
+            _FDT(fdt_setprop_string(fdt, chosen, "qemu,boot-device", boot_device));
+        }
+
+        if (!spapr->has_graphics && stdout_path) {
+            /*
+             * "linux,stdout-path" and "stdout" properties are
+             * deprecated by linux kernel. New platforms should only
+             * use the "stdout-path" property. Set the new property
+             * and continue using older property to remain compatible
+             * with the existing firmware.
+             */
+            _FDT(fdt_setprop_string(fdt, chosen, "linux,stdout-path", stdout_path));
+            _FDT(fdt_setprop_string(fdt, chosen, "stdout-path", stdout_path));
+        }
 
-    if (!spapr->has_graphics && stdout_path) {
         /*
-         * "linux,stdout-path" and "stdout" properties are deprecated by linux
-         * kernel. New platforms should only use the "stdout-path" property. Set
-         * the new property and continue using older property to remain
-         * compatible with the existing firmware.
+         * We can deal with BAR reallocation just fine, advertise it
+         * to the guest
          */
-        _FDT(fdt_setprop_string(fdt, chosen, "linux,stdout-path", stdout_path));
-        _FDT(fdt_setprop_string(fdt, chosen, "stdout-path", stdout_path));
-    }
+        if (smc->linux_pci_probe) {
+            _FDT(fdt_setprop_cell(fdt, chosen, "linux,pci-probe-only", 0));
+        }
 
-    /* We can deal with BAR reallocation just fine, advertise it to the guest */
-    if (smc->linux_pci_probe) {
-        _FDT(fdt_setprop_cell(fdt, chosen, "linux,pci-probe-only", 0));
-    }
+        spapr_dt_ov5_platform_support(spapr, fdt, chosen);
 
-    spapr_dt_ov5_platform_support(spapr, fdt, chosen);
+        g_free(stdout_path);
+        g_free(bootlist);
+    }
 
-    g_free(stdout_path);
-    g_free(bootlist);
+    _FDT(spapr_dt_ovec(fdt, chosen, spapr->ov5_cas, "ibm,architecture-vec-5"));
 }
 
 static void spapr_dt_hypervisor(SpaprMachineState *spapr, void *fdt)
@@ -1192,7 +1209,7 @@ void *spapr_build_fdt(SpaprMachineState *spapr, bool reset, size_t space)
     /* /interrupt controller */
     spapr_irq_dt(spapr, spapr_max_server_number(spapr), fdt, PHANDLE_INTC);
 
-    ret = spapr_populate_memory(spapr, fdt);
+    ret = spapr_dt_memory(spapr, fdt);
     if (ret < 0) {
         error_report("couldn't setup memory nodes in fdt");
         exit(1);
@@ -1202,7 +1219,7 @@ void *spapr_build_fdt(SpaprMachineState *spapr, bool reset, size_t space)
     spapr_dt_vdevice(spapr->vio_bus, fdt);
 
     if (object_resolve_path_type("", TYPE_SPAPR_RNG, NULL)) {
-        ret = spapr_rng_populate_dt(fdt);
+        ret = spapr_dt_rng(fdt);
         if (ret < 0) {
             error_report("could not set up rng device in the fdt");
             exit(1);
@@ -1217,8 +1234,7 @@ void *spapr_build_fdt(SpaprMachineState *spapr, bool reset, size_t space)
         }
     }
 
-    /* cpus */
-    spapr_populate_cpus_dt_node(fdt, spapr);
+    spapr_dt_cpus(fdt, spapr);
 
     if (smc->dr_lmb_enabled) {
         _FDT(spapr_dt_drc(fdt, 0, NULL, SPAPR_DR_CONNECTOR_TYPE_LMB));
@@ -1240,9 +1256,7 @@ void *spapr_build_fdt(SpaprMachineState *spapr, bool reset, size_t space)
     spapr_dt_rtas(spapr, fdt);
 
     /* /chosen */
-    if (reset) {
-        spapr_dt_chosen(spapr, fdt);
-    }
+    spapr_dt_chosen(spapr, fdt, reset);
 
     /* /hypervisor */
     if (kvm_enabled()) {
@@ -1261,13 +1275,6 @@ void *spapr_build_fdt(SpaprMachineState *spapr, bool reset, size_t space)
         }
     }
 
-    /* ibm,client-architecture-support updates */
-    ret = spapr_dt_cas_updates(spapr, fdt, spapr->ov5_cas);
-    if (ret < 0) {
-        error_report("couldn't setup CAS properties fdt");
-        exit(1);
-    }
-
     if (smc->dr_phb_enabled) {
         ret = spapr_dt_drc(fdt, 0, NULL, SPAPR_DR_CONNECTOR_TYPE_PHB);
         if (ret < 0) {
@@ -1569,7 +1576,7 @@ void spapr_reallocate_hpt(SpaprMachineState *spapr, int shift,
     spapr_set_all_lpcrs(0, LPCR_HR | LPCR_UPRT);
 }
 
-void spapr_setup_hpt_and_vrma(SpaprMachineState *spapr)
+void spapr_setup_hpt(SpaprMachineState *spapr)
 {
     int hpt_shift;
 
@@ -1585,9 +1592,16 @@ void spapr_setup_hpt_and_vrma(SpaprMachineState *spapr)
     }
     spapr_reallocate_hpt(spapr, hpt_shift, &error_fatal);
 
-    if (spapr->vrma_adjust) {
-        spapr->rma_size = kvmppc_rma_size(spapr_node0_size(MACHINE(spapr)),
-                                          spapr->htab_shift);
+    if (kvm_enabled()) {
+        hwaddr vrma_limit = kvmppc_vrma_limit(spapr->htab_shift);
+
+        /* Check our RMA fits in the possible VRMA */
+        if (vrma_limit < spapr->rma_size) {
+            error_report("Unable to create %" HWADDR_PRIu
+                         "MiB RMA (VRMA only allows %" HWADDR_PRIu "MiB",
+                         spapr->rma_size / MiB, vrma_limit / MiB);
+            exit(EXIT_FAILURE);
+        }
     }
 }
 
@@ -1627,7 +1641,7 @@ static void spapr_machine_reset(MachineState *machine)
         spapr->patb_entry = PATE1_GR;
         spapr_set_all_lpcrs(LPCR_HR | LPCR_UPRT, LPCR_HR | LPCR_UPRT);
     } else {
-        spapr_setup_hpt_and_vrma(spapr);
+        spapr_setup_hpt(spapr);
     }
 
     qemu_devices_reset();
@@ -1691,16 +1705,17 @@ static void spapr_machine_reset(MachineState *machine)
     spapr->fdt_blob = fdt;
 
     /* Set up the entry state */
-    spapr_cpu_set_entry_state(first_ppc_cpu, SPAPR_ENTRY_POINT, fdt_addr);
+    spapr_cpu_set_entry_state(first_ppc_cpu, SPAPR_ENTRY_POINT, 0, fdt_addr, 0);
     first_ppc_cpu->env.gpr[5] = 0;
 
     spapr->cas_reboot = false;
 
-    spapr->mc_status = -1;
-    spapr->guest_machine_check_addr = -1;
+    spapr->fwnmi_system_reset_addr = -1;
+    spapr->fwnmi_machine_check_addr = -1;
+    spapr->fwnmi_machine_check_interlock = -1;
 
     /* Signal all vCPUs waiting on this condition */
-    qemu_cond_broadcast(&spapr->mc_delivery_cond);
+    qemu_cond_broadcast(&spapr->fwnmi_machine_check_interlock_cond);
 
     migrate_del_blocker(spapr->fwnmi_migration_blocker);
 }
@@ -1989,7 +2004,7 @@ static bool spapr_fwnmi_needed(void *opaque)
 {
     SpaprMachineState *spapr = (SpaprMachineState *)opaque;
 
-    return spapr->guest_machine_check_addr != -1;
+    return spapr->fwnmi_machine_check_addr != -1;
 }
 
 static int spapr_fwnmi_pre_save(void *opaque)
@@ -2000,7 +2015,7 @@ static int spapr_fwnmi_pre_save(void *opaque)
      * Check if machine check handling is in progress and print a
      * warning message.
      */
-    if (spapr->mc_status != -1) {
+    if (spapr->fwnmi_machine_check_interlock != -1) {
         warn_report("A machine check is being handled during migration. The"
                 "handler may run and log hardware error on the destination");
     }
@@ -2008,15 +2023,16 @@ static int spapr_fwnmi_pre_save(void *opaque)
     return 0;
 }
 
-static const VMStateDescription vmstate_spapr_machine_check = {
-    .name = "spapr_machine_check",
+static const VMStateDescription vmstate_spapr_fwnmi = {
+    .name = "spapr_fwnmi",
     .version_id = 1,
     .minimum_version_id = 1,
     .needed = spapr_fwnmi_needed,
     .pre_save = spapr_fwnmi_pre_save,
     .fields = (VMStateField[]) {
-        VMSTATE_UINT64(guest_machine_check_addr, SpaprMachineState),
-        VMSTATE_INT32(mc_status, SpaprMachineState),
+        VMSTATE_UINT64(fwnmi_system_reset_addr, SpaprMachineState),
+        VMSTATE_UINT64(fwnmi_machine_check_addr, SpaprMachineState),
+        VMSTATE_INT32(fwnmi_machine_check_interlock, SpaprMachineState),
         VMSTATE_END_OF_LIST()
     },
 };
@@ -2055,7 +2071,7 @@ static const VMStateDescription vmstate_spapr = {
         &vmstate_spapr_cap_large_decr,
         &vmstate_spapr_cap_ccf_assist,
         &vmstate_spapr_cap_fwnmi,
-        &vmstate_spapr_machine_check,
+        &vmstate_spapr_fwnmi,
         NULL
     }
 };
@@ -2641,6 +2657,42 @@ static PCIHostState *spapr_create_default_phb(void)
     return PCI_HOST_BRIDGE(dev);
 }
 
+static hwaddr spapr_rma_size(SpaprMachineState *spapr, Error **errp)
+{
+    MachineState *machine = MACHINE(spapr);
+    SpaprMachineClass *smc = SPAPR_MACHINE_GET_CLASS(spapr);
+    hwaddr rma_size = machine->ram_size;
+    hwaddr node0_size = spapr_node0_size(machine);
+
+    /* RMA has to fit in the first NUMA node */
+    rma_size = MIN(rma_size, node0_size);
+
+    /*
+     * VRMA access is via a special 1TiB SLB mapping, so the RMA can
+     * never exceed that
+     */
+    rma_size = MIN(rma_size, 1 * TiB);
+
+    /*
+     * Clamp the RMA size based on machine type.  This is for
+     * migration compatibility with older qemu versions, which limited
+     * the RMA size for complicated and mostly bad reasons.
+     */
+    if (smc->rma_limit) {
+        rma_size = MIN(rma_size, smc->rma_limit);
+    }
+
+    if (rma_size < MIN_RMA_SLOF) {
+        error_setg(errp,
+                   "pSeries SLOF firmware requires >= %" HWADDR_PRIx
+                   "ldMiB guest RMA (Real Mode Area memory)",
+                   MIN_RMA_SLOF / MiB);
+        return 0;
+    }
+
+    return rma_size;
+}
+
 /* pSeries LPAR / sPAPR hardware init */
 static void spapr_machine_init(MachineState *machine)
 {
@@ -2652,7 +2704,6 @@ static void spapr_machine_init(MachineState *machine)
     PCIHostState *phb;
     int i;
     MemoryRegion *sysmem = get_system_memory();
-    hwaddr node0_size = spapr_node0_size(machine);
     long load_limit, fw_size;
     char *filename;
     Error *resize_hpt_err = NULL;
@@ -2692,34 +2743,7 @@ static void spapr_machine_init(MachineState *machine)
         exit(1);
     }
 
-    spapr->rma_size = node0_size;
-
-    /* With KVM, we don't actually know whether KVM supports an
-     * unbounded RMA (PR KVM) or is limited by the hash table size
-     * (HV KVM using VRMA), so we always assume the latter
-     *
-     * In that case, we also limit the initial allocations for RTAS
-     * etc... to 256M since we have no way to know what the VRMA size
-     * is going to be as it depends on the size of the hash table
-     * which isn't determined yet.
-     */
-    if (kvm_enabled()) {
-        spapr->vrma_adjust = 1;
-        spapr->rma_size = MIN(spapr->rma_size, 0x10000000);
-    }
-
-    /* Actually we don't support unbounded RMA anymore since we added
-     * proper emulation of HV mode. The max we can get is 16G which
-     * also happens to be what we configure for PAPR mode so make sure
-     * we don't do anything bigger than that
-     */
-    spapr->rma_size = MIN(spapr->rma_size, 0x400000000ull);
-
-    if (spapr->rma_size > node0_size) {
-        error_report("Numa node 0 has to span the RMA (%#08"HWADDR_PRIx")",
-                     spapr->rma_size);
-        exit(1);
-    }
+    spapr->rma_size = spapr_rma_size(spapr, &error_fatal);
 
     /* Setup a load limit for the ramdisk leaving room for SLOF and FDT */
     load_limit = MIN(spapr->rma_size, RTAS_MAX_ADDR) - FW_OVERHEAD;
@@ -2869,7 +2893,7 @@ static void spapr_machine_init(MachineState *machine)
         spapr_create_lmb_dr_connectors(spapr);
     }
 
-    if (spapr_get_cap(spapr, SPAPR_CAP_FWNMI_MCE) == SPAPR_CAP_ON) {
+    if (spapr_get_cap(spapr, SPAPR_CAP_FWNMI) == SPAPR_CAP_ON) {
         /* Create the error string for live migration blocker */
         error_setg(&spapr->fwnmi_migration_blocker,
             "A machine check is being handled during migration. The handler"
@@ -2956,13 +2980,6 @@ static void spapr_machine_init(MachineState *machine)
         }
     }
 
-    if (spapr->rma_size < (MIN_RMA_SLOF * MiB)) {
-        error_report(
-            "pSeries SLOF firmware requires >= %ldM guest RMA (Real Mode Area memory)",
-            MIN_RMA_SLOF);
-        exit(1);
-    }
-
     if (kernel_filename) {
         uint64_t lowaddr = 0;
 
@@ -3045,7 +3062,7 @@ static void spapr_machine_init(MachineState *machine)
         kvmppc_spapr_enable_inkernel_multitce();
     }
 
-    qemu_cond_init(&spapr->mc_delivery_cond);
+    qemu_cond_init(&spapr->fwnmi_machine_check_interlock_cond);
 }
 
 static int spapr_kvm_type(MachineState *machine, const char *vm_type)
@@ -3223,30 +3240,6 @@ static void spapr_set_resize_hpt(Object *obj, const char *value, Error **errp)
     }
 }
 
-static void spapr_get_vsmt(Object *obj, Visitor *v, const char *name,
-                                   void *opaque, Error **errp)
-{
-    visit_type_uint32(v, name, (uint32_t *)opaque, errp);
-}
-
-static void spapr_set_vsmt(Object *obj, Visitor *v, const char *name,
-                                   void *opaque, Error **errp)
-{
-    visit_type_uint32(v, name, (uint32_t *)opaque, errp);
-}
-
-static void spapr_get_kernel_addr(Object *obj, Visitor *v, const char *name,
-                                  void *opaque, Error **errp)
-{
-    visit_type_uint64(v, name, (uint64_t *)opaque, errp);
-}
-
-static void spapr_set_kernel_addr(Object *obj, Visitor *v, const char *name,
-                                  void *opaque, Error **errp)
-{
-    visit_type_uint64(v, name, (uint64_t *)opaque, errp);
-}
-
 static char *spapr_get_ic_mode(Object *obj, Error **errp)
 {
     SpaprMachineState *spapr = SPAPR_MACHINE(obj);
@@ -3344,17 +3337,19 @@ static void spapr_instance_init(Object *obj)
     object_property_set_description(obj, "resize-hpt",
                                     "Resizing of the Hash Page Table (enabled, disabled, required)",
                                     NULL);
-    object_property_add(obj, "vsmt", "uint32", spapr_get_vsmt,
-                        spapr_set_vsmt, NULL, &spapr->vsmt, &error_abort);
+    object_property_add_uint32_ptr(obj, "vsmt",
+                                   &spapr->vsmt, OBJ_PROP_FLAG_READWRITE,
+                                   &error_abort);
     object_property_set_description(obj, "vsmt",
                                     "Virtual SMT: KVM behaves as if this were"
                                     " the host's SMT mode", &error_abort);
+
     object_property_add_bool(obj, "vfio-no-msix-emulation",
                              spapr_get_msix_emulation, NULL, NULL);
 
-    object_property_add(obj, "kernel-addr", "uint64", spapr_get_kernel_addr,
-                        spapr_set_kernel_addr, NULL, &spapr->kernel_addr,
-                        &error_abort);
+    object_property_add_uint64_ptr(obj, "kernel-addr",
+                                   &spapr->kernel_addr, OBJ_PROP_FLAG_READWRITE,
+                                   &error_abort);
     object_property_set_description(obj, "kernel-addr",
                                     stringify(KERNEL_LOAD_ADDR)
                                     " for -kernel is the default",
@@ -3389,8 +3384,28 @@ static void spapr_machine_finalizefn(Object *obj)
 
 void spapr_do_system_reset_on_cpu(CPUState *cs, run_on_cpu_data arg)
 {
+    SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
+
     cpu_synchronize_state(cs);
-    ppc_cpu_do_system_reset(cs);
+    /* If FWNMI is inactive, addr will be -1, which will deliver to 0x100 */
+    if (spapr->fwnmi_system_reset_addr != -1) {
+        uint64_t rtas_addr, addr;
+        PowerPCCPU *cpu = POWERPC_CPU(cs);
+        CPUPPCState *env = &cpu->env;
+
+        /* get rtas addr from fdt */
+        rtas_addr = spapr_get_rtas_addr();
+        if (!rtas_addr) {
+            qemu_system_guest_panicked(NULL);
+            return;
+        }
+
+        addr = rtas_addr + RTAS_ERROR_LOG_MAX + cs->cpu_index * sizeof(uint64_t)*2;
+        stq_be_phys(&address_space_memory, addr, env->gpr[3]);
+        stq_be_phys(&address_space_memory, addr + sizeof(uint64_t), 0);
+        env->gpr[3] = addr;
+    }
+    ppc_cpu_do_system_reset(cs, spapr->fwnmi_system_reset_addr);
 }
 
 static void spapr_nmi(NMIState *n, int cpu_index, Error **errp)
@@ -3411,8 +3426,8 @@ int spapr_lmb_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr,
     addr = spapr_drc_index(drc) * SPAPR_MEMORY_BLOCK_SIZE;
     node = object_property_get_uint(OBJECT(drc->dev), PC_DIMM_NODE_PROP,
                                     &error_abort);
-    *fdt_start_offset = spapr_populate_memory_node(fdt, node, addr,
-                                                   SPAPR_MEMORY_BLOCK_SIZE);
+    *fdt_start_offset = spapr_dt_memory_node(fdt, node, addr,
+                                             SPAPR_MEMORY_BLOCK_SIZE);
     return 0;
 }
 
@@ -3813,7 +3828,7 @@ int spapr_core_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr,
     offset = fdt_add_subnode(fdt, 0, nodename);
     g_free(nodename);
 
-    spapr_populate_cpu_dt(cs, fdt, offset, spapr);
+    spapr_dt_cpu(cs, fdt, offset, spapr);
 
     *fdt_start_offset = offset;
     return 0;
@@ -4526,7 +4541,7 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data)
     smc->default_caps.caps[SPAPR_CAP_NESTED_KVM_HV] = SPAPR_CAP_OFF;
     smc->default_caps.caps[SPAPR_CAP_LARGE_DECREMENTER] = SPAPR_CAP_ON;
     smc->default_caps.caps[SPAPR_CAP_CCF_ASSIST] = SPAPR_CAP_ON;
-    smc->default_caps.caps[SPAPR_CAP_FWNMI_MCE] = SPAPR_CAP_ON;
+    smc->default_caps.caps[SPAPR_CAP_FWNMI] = SPAPR_CAP_ON;
     spapr_caps_add_properties(smc, &error_abort);
     smc->irq = &spapr_irq_dual;
     smc->dr_phb_enabled = true;
@@ -4604,7 +4619,8 @@ static void spapr_machine_4_2_class_options(MachineClass *mc)
     spapr_machine_5_0_class_options(mc);
     compat_props_add(mc->compat_props, hw_compat_4_2, hw_compat_4_2_len);
     smc->default_caps.caps[SPAPR_CAP_CCF_ASSIST] = SPAPR_CAP_OFF;
-    smc->default_caps.caps[SPAPR_CAP_FWNMI_MCE] = SPAPR_CAP_OFF;
+    smc->default_caps.caps[SPAPR_CAP_FWNMI] = SPAPR_CAP_OFF;
+    smc->rma_limit = 16 * GiB;
     mc->nvdimm_supported = false;
 }
 
diff --git a/hw/ppc/spapr_caps.c b/hw/ppc/spapr_caps.c
index 8b27d3ac09..679ae7959f 100644
--- a/hw/ppc/spapr_caps.c
+++ b/hw/ppc/spapr_caps.c
@@ -509,17 +509,14 @@ static void cap_ccf_assist_apply(SpaprMachineState *spapr, uint8_t val,
     }
 }
 
-static void cap_fwnmi_mce_apply(SpaprMachineState *spapr, uint8_t val,
+static void cap_fwnmi_apply(SpaprMachineState *spapr, uint8_t val,
                                 Error **errp)
 {
     if (!val) {
         return; /* Disabled by default */
     }
 
-    if (tcg_enabled()) {
-        warn_report("Firmware Assisted Non-Maskable Interrupts(FWNMI) not "
-                    "supported in TCG");
-    } else if (kvm_enabled()) {
+    if (kvm_enabled()) {
         if (kvmppc_set_fwnmi() < 0) {
             error_setg(errp, "Firmware Assisted Non-Maskable Interrupts(FWNMI) "
                              "not supported by KVM");
@@ -626,14 +623,14 @@ SpaprCapabilityInfo capability_table[SPAPR_CAP_NUM] = {
         .type = "bool",
         .apply = cap_ccf_assist_apply,
     },
-    [SPAPR_CAP_FWNMI_MCE] = {
-        .name = "fwnmi-mce",
-        .description = "Handle fwnmi machine check exceptions",
-        .index = SPAPR_CAP_FWNMI_MCE,
+    [SPAPR_CAP_FWNMI] = {
+        .name = "fwnmi",
+        .description = "Implements PAPR FWNMI option",
+        .index = SPAPR_CAP_FWNMI,
         .get = spapr_cap_get_bool,
         .set = spapr_cap_set_bool,
         .type = "bool",
-        .apply = cap_fwnmi_mce_apply,
+        .apply = cap_fwnmi_apply,
     },
 };
 
@@ -774,7 +771,7 @@ SPAPR_CAP_MIG_STATE(hpt_maxpagesize, SPAPR_CAP_HPT_MAXPAGESIZE);
 SPAPR_CAP_MIG_STATE(nested_kvm_hv, SPAPR_CAP_NESTED_KVM_HV);
 SPAPR_CAP_MIG_STATE(large_decr, SPAPR_CAP_LARGE_DECREMENTER);
 SPAPR_CAP_MIG_STATE(ccf_assist, SPAPR_CAP_CCF_ASSIST);
-SPAPR_CAP_MIG_STATE(fwnmi, SPAPR_CAP_FWNMI_MCE);
+SPAPR_CAP_MIG_STATE(fwnmi, SPAPR_CAP_FWNMI);
 
 void spapr_caps_init(SpaprMachineState *spapr)
 {
diff --git a/hw/ppc/spapr_cpu_core.c b/hw/ppc/spapr_cpu_core.c
index d09125d9af..ac1c109427 100644
--- a/hw/ppc/spapr_cpu_core.c
+++ b/hw/ppc/spapr_cpu_core.c
@@ -50,22 +50,14 @@ static void spapr_reset_vcpu(PowerPCCPU *cpu)
      * the settings below ensure proper operations with TCG in absence of
      * a real hypervisor.
      *
-     * Clearing VPM0 will also cause us to use RMOR in mmu-hash64.c for
-     * real mode accesses, which thankfully defaults to 0 and isn't
-     * accessible in guest mode.
-     *
      * Disable Power-saving mode Exit Cause exceptions for the CPU, so
      * we don't get spurious wakups before an RTAS start-cpu call.
      * For the same reason, set PSSCR_EC.
      */
-    lpcr &= ~(LPCR_VPM0 | LPCR_VPM1 | LPCR_ISL | LPCR_KBV | pcc->lpcr_pm);
+    lpcr &= ~(LPCR_VPM1 | LPCR_ISL | LPCR_KBV | pcc->lpcr_pm);
     lpcr |= LPCR_LPES0 | LPCR_LPES1;
     env->spr[SPR_PSSCR] |= PSSCR_EC;
 
-    /* Set RMLS to the max (ie, 16G) */
-    lpcr &= ~LPCR_RMLS;
-    lpcr |= 1ull << LPCR_RMLS_SHIFT;
-
     ppc_store_lpcr(cpu, lpcr);
 
     /* Set a full AMOR so guest can use the AMR as it sees fit */
@@ -84,13 +76,17 @@ static void spapr_reset_vcpu(PowerPCCPU *cpu)
     spapr_irq_cpu_intc_reset(spapr, cpu);
 }
 
-void spapr_cpu_set_entry_state(PowerPCCPU *cpu, target_ulong nip, target_ulong r3)
+void spapr_cpu_set_entry_state(PowerPCCPU *cpu, target_ulong nip,
+                               target_ulong r1, target_ulong r3,
+                               target_ulong r4)
 {
     PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
     CPUPPCState *env = &cpu->env;
 
     env->nip = nip;
+    env->gpr[1] = r1;
     env->gpr[3] = r3;
+    env->gpr[4] = r4;
     kvmppc_set_reg_ppc_online(cpu, 1);
     CPU(cpu)->halted = 0;
     /* Enable Power-saving mode Exit Cause exceptions */
diff --git a/hw/ppc/spapr_drc.c b/hw/ppc/spapr_drc.c
index e373d342eb..47e6bb12f9 100644
--- a/hw/ppc/spapr_drc.c
+++ b/hw/ppc/spapr_drc.c
@@ -583,7 +583,8 @@ static void spapr_dr_connector_instance_init(Object *obj)
     SpaprDrc *drc = SPAPR_DR_CONNECTOR(obj);
     SpaprDrcClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc);
 
-    object_property_add_uint32_ptr(obj, "id", &drc->id, NULL);
+    object_property_add_uint32_ptr(obj, "id", &drc->id, OBJ_PROP_FLAG_READ,
+                                   NULL);
     object_property_add(obj, "index", "uint32", prop_get_index,
                         NULL, NULL, NULL, NULL);
     object_property_add(obj, "fdt", "struct", prop_get_fdt,
diff --git a/hw/ppc/spapr_events.c b/hw/ppc/spapr_events.c
index 8b32b7eea5..323fcef4aa 100644
--- a/hw/ppc/spapr_events.c
+++ b/hw/ppc/spapr_events.c
@@ -786,28 +786,12 @@ static void spapr_mce_dispatch_elog(PowerPCCPU *cpu, bool recovered)
 {
     SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
     CPUState *cs = CPU(cpu);
-    uint64_t rtas_addr;
     CPUPPCState *env = &cpu->env;
-    PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
-    target_ulong msr = 0;
+    uint64_t rtas_addr;
     struct rtas_error_log log;
     struct mc_extended_log *ext_elog;
     uint32_t summary;
 
-    /*
-     * Properly set bits in MSR before we invoke the handler.
-     * SRR0/1, DAR and DSISR are properly set by KVM
-     */
-    if (!(*pcc->interrupts_big_endian)(cpu)) {
-        msr |= (1ULL << MSR_LE);
-    }
-
-    if (env->msr & (1ULL << MSR_SF)) {
-        msr |= (1ULL << MSR_SF);
-    }
-
-    msr |= (1ULL << MSR_ME);
-
     ext_elog = g_malloc0(sizeof(*ext_elog));
     summary = spapr_mce_get_elog_type(cpu, recovered, ext_elog);
 
@@ -823,8 +807,7 @@ static void spapr_mce_dispatch_elog(PowerPCCPU *cpu, bool recovered)
     /* get rtas addr from fdt */
     rtas_addr = spapr_get_rtas_addr();
     if (!rtas_addr) {
-        /* Unable to fetch rtas_addr. Hence reset the guest */
-        ppc_cpu_do_system_reset(cs);
+        qemu_system_guest_panicked(NULL);
         g_free(ext_elog);
         return;
     }
@@ -836,12 +819,11 @@ static void spapr_mce_dispatch_elog(PowerPCCPU *cpu, bool recovered)
     cpu_physical_memory_write(rtas_addr + RTAS_ERROR_LOG_OFFSET +
                               sizeof(env->gpr[3]) + sizeof(log), ext_elog,
                               sizeof(*ext_elog));
+    g_free(ext_elog);
 
     env->gpr[3] = rtas_addr + RTAS_ERROR_LOG_OFFSET;
-    env->msr = msr;
-    env->nip = spapr->guest_machine_check_addr;
 
-    g_free(ext_elog);
+    ppc_cpu_do_fwnmi_machine_check(cs, spapr->fwnmi_machine_check_addr);
 }
 
 void spapr_mce_req_event(PowerPCCPU *cpu, bool recovered)
@@ -851,7 +833,7 @@ void spapr_mce_req_event(PowerPCCPU *cpu, bool recovered)
     int ret;
     Error *local_err = NULL;
 
-    if (spapr->guest_machine_check_addr == -1) {
+    if (spapr->fwnmi_machine_check_addr == -1) {
         /*
          * This implies that we have hit a machine check either when the
          * guest has not registered FWNMI (i.e., "ibm,nmi-register" not
@@ -863,19 +845,19 @@ void spapr_mce_req_event(PowerPCCPU *cpu, bool recovered)
         return;
     }
 
-    while (spapr->mc_status != -1) {
+    while (spapr->fwnmi_machine_check_interlock != -1) {
         /*
          * Check whether the same CPU got machine check error
          * while still handling the mc error (i.e., before
          * that CPU called "ibm,nmi-interlock")
          */
-        if (spapr->mc_status == cpu->vcpu_id) {
+        if (spapr->fwnmi_machine_check_interlock == cpu->vcpu_id) {
             qemu_system_guest_panicked(NULL);
             return;
         }
-        qemu_cond_wait_iothread(&spapr->mc_delivery_cond);
+        qemu_cond_wait_iothread(&spapr->fwnmi_machine_check_interlock_cond);
         /* Meanwhile if the system is reset, then just return */
-        if (spapr->guest_machine_check_addr == -1) {
+        if (spapr->fwnmi_machine_check_addr == -1) {
             return;
         }
     }
@@ -891,7 +873,7 @@ void spapr_mce_req_event(PowerPCCPU *cpu, bool recovered)
         warn_report("Received a fwnmi while migration was in progress");
     }
 
-    spapr->mc_status = cpu->vcpu_id;
+    spapr->fwnmi_machine_check_interlock = cpu->vcpu_id;
     spapr_mce_dispatch_elog(cpu, recovered);
 }
 
@@ -983,6 +965,19 @@ void spapr_clear_pending_events(SpaprMachineState *spapr)
     }
 }
 
+void spapr_clear_pending_hotplug_events(SpaprMachineState *spapr)
+{
+    SpaprEventLogEntry *entry = NULL, *next_entry;
+
+    QTAILQ_FOREACH_SAFE(entry, &spapr->pending_events, next, next_entry) {
+        if (spapr_event_log_entry_type(entry) == RTAS_LOG_TYPE_HOTPLUG) {
+            QTAILQ_REMOVE(&spapr->pending_events, entry, next);
+            g_free(entry->extended_log);
+            g_free(entry);
+        }
+    }
+}
+
 void spapr_events_init(SpaprMachineState *spapr)
 {
     int epow_irq = SPAPR_IRQ_EPOW;
diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c
index 934eb12d27..40c86e91eb 100644
--- a/hw/ppc/spapr_hcall.c
+++ b/hw/ppc/spapr_hcall.c
@@ -1458,7 +1458,7 @@ static void spapr_check_setup_free_hpt(SpaprMachineState *spapr,
         spapr_free_hpt(spapr);
     } else if (!(patbe_new & PATE1_GR)) {
         /* RADIX->HASH || NOTHING->HASH : Allocate HPT */
-        spapr_setup_hpt_and_vrma(spapr);
+        spapr_setup_hpt(spapr);
     }
     return;
 }
@@ -1640,7 +1640,7 @@ static uint32_t cas_check_pvr(SpaprMachineState *spapr, PowerPCCPU *cpu,
     return best_compat;
 }
 
-static bool spapr_transient_dev_before_cas(void)
+static void spapr_handle_transient_dev_before_cas(SpaprMachineState *spapr)
 {
     Object *drc_container;
     ObjectProperty *prop;
@@ -1658,10 +1658,11 @@ static bool spapr_transient_dev_before_cas(void)
                                                           prop->name, NULL));
 
         if (spapr_drc_transient(drc)) {
-            return true;
+            spapr_drc_reset(drc);
         }
     }
-    return false;
+
+    spapr_clear_pending_hotplug_events(spapr);
 }
 
 static target_ulong h_client_architecture_support(PowerPCCPU *cpu,
@@ -1834,9 +1835,7 @@ static target_ulong h_client_architecture_support(PowerPCCPU *cpu,
 
     spapr_irq_update_active_intc(spapr);
 
-    if (spapr_transient_dev_before_cas()) {
-        spapr->cas_reboot = true;
-    }
+    spapr_handle_transient_dev_before_cas(spapr);
 
     if (!spapr->cas_reboot) {
         void *fdt;
@@ -1846,7 +1845,7 @@ static target_ulong h_client_architecture_support(PowerPCCPU *cpu,
          * (because the guest isn't going to use radix) then set it up here. */
         if ((spapr->patb_entry & PATE1_GR) && !guest_radix) {
             /* legacy hash or new hash: */
-            spapr_setup_hpt_and_vrma(spapr);
+            spapr_setup_hpt(spapr);
         }
 
         if (fdt_bufsize < sizeof(hdr)) {
diff --git a/hw/ppc/spapr_nvdimm.c b/hw/ppc/spapr_nvdimm.c
index 74eeb8bb74..25be8082d7 100644
--- a/hw/ppc/spapr_nvdimm.c
+++ b/hw/ppc/spapr_nvdimm.c
@@ -35,6 +35,7 @@ void spapr_nvdimm_validate_opts(NVDIMMDevice *nvdimm, uint64_t size,
 {
     char *uuidstr = NULL;
     QemuUUID uuid;
+    int ret;
 
     if (size % SPAPR_MINIMUM_SCM_BLOCK_SIZE) {
         error_setg(errp, "NVDIMM memory size excluding the label area"
@@ -43,8 +44,10 @@ void spapr_nvdimm_validate_opts(NVDIMMDevice *nvdimm, uint64_t size,
         return;
     }
 
-    uuidstr = object_property_get_str(OBJECT(nvdimm), NVDIMM_UUID_PROP, NULL);
-    qemu_uuid_parse(uuidstr, &uuid);
+    uuidstr = object_property_get_str(OBJECT(nvdimm), NVDIMM_UUID_PROP,
+                                      &error_abort);
+    ret = qemu_uuid_parse(uuidstr, &uuid);
+    g_assert(!ret);
     g_free(uuidstr);
 
     if (qemu_uuid_is_null(&uuid)) {
diff --git a/hw/ppc/spapr_ovec.c b/hw/ppc/spapr_ovec.c
index 0ff6d1aeae..dd003f1763 100644
--- a/hw/ppc/spapr_ovec.c
+++ b/hw/ppc/spapr_ovec.c
@@ -200,8 +200,8 @@ SpaprOptionVector *spapr_ovec_parse_vector(target_ulong table_addr, int vector)
     return ov;
 }
 
-int spapr_ovec_populate_dt(void *fdt, int fdt_offset,
-                           SpaprOptionVector *ov, const char *name)
+int spapr_dt_ovec(void *fdt, int fdt_offset,
+                  SpaprOptionVector *ov, const char *name)
 {
     uint8_t vec[OV_MAXBYTES + 1];
     uint16_t vec_len;
diff --git a/hw/ppc/spapr_rtas.c b/hw/ppc/spapr_rtas.c
index 656fdd2216..9fb8c8632a 100644
--- a/hw/ppc/spapr_rtas.c
+++ b/hw/ppc/spapr_rtas.c
@@ -190,7 +190,7 @@ static void rtas_start_cpu(PowerPCCPU *callcpu, SpaprMachineState *spapr,
      */
     newcpu->env.tb_env->tb_offset = callcpu->env.tb_env->tb_offset;
 
-    spapr_cpu_set_entry_state(newcpu, start, r3);
+    spapr_cpu_set_entry_state(newcpu, start, 0, r3, 0);
 
     qemu_cpu_kick(CPU(newcpu));
 
@@ -414,8 +414,9 @@ static void rtas_ibm_nmi_register(PowerPCCPU *cpu,
                                   uint32_t nret, target_ulong rets)
 {
     hwaddr rtas_addr;
+    target_ulong sreset_addr, mce_addr;
 
-    if (spapr_get_cap(spapr, SPAPR_CAP_FWNMI_MCE) == SPAPR_CAP_OFF) {
+    if (spapr_get_cap(spapr, SPAPR_CAP_FWNMI) == SPAPR_CAP_OFF) {
         rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED);
         return;
     }
@@ -426,7 +427,19 @@ static void rtas_ibm_nmi_register(PowerPCCPU *cpu,
         return;
     }
 
-    spapr->guest_machine_check_addr = rtas_ld(args, 1);
+    sreset_addr = rtas_ld(args, 0);
+    mce_addr = rtas_ld(args, 1);
+
+    /* PAPR requires these are in the first 32M of memory and within RMA */
+    if (sreset_addr >= 32 * MiB || sreset_addr >= spapr->rma_size ||
+           mce_addr >= 32 * MiB ||    mce_addr >= spapr->rma_size) {
+        rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
+        return;
+    }
+
+    spapr->fwnmi_system_reset_addr = sreset_addr;
+    spapr->fwnmi_machine_check_addr = mce_addr;
+
     rtas_st(rets, 0, RTAS_OUT_SUCCESS);
 }
 
@@ -436,29 +449,39 @@ static void rtas_ibm_nmi_interlock(PowerPCCPU *cpu,
                                    target_ulong args,
                                    uint32_t nret, target_ulong rets)
 {
-    if (spapr_get_cap(spapr, SPAPR_CAP_FWNMI_MCE) == SPAPR_CAP_OFF) {
+    if (spapr_get_cap(spapr, SPAPR_CAP_FWNMI) == SPAPR_CAP_OFF) {
         rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED);
         return;
     }
 
-    if (spapr->guest_machine_check_addr == -1) {
+    if (spapr->fwnmi_machine_check_addr == -1) {
         /* NMI register not called */
         rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
         return;
     }
 
-    if (spapr->mc_status != cpu->vcpu_id) {
-        /* The vCPU that hit the NMI should invoke "ibm,nmi-interlock" */
-        rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
+    if (spapr->fwnmi_machine_check_interlock != cpu->vcpu_id) {
+        /*
+	 * The vCPU that hit the NMI should invoke "ibm,nmi-interlock"
+         * This should be PARAM_ERROR, but Linux calls "ibm,nmi-interlock"
+	 * for system reset interrupts, despite them not being interlocked.
+	 * PowerVM silently ignores this and returns success here. Returning
+	 * failure causes Linux to print the error "FWNMI: nmi-interlock
+	 * failed: -3", although no other apparent ill effects, this is a
+	 * regression for the user when enabling FWNMI. So for now, match
+	 * PowerVM. When most Linux clients are fixed, this could be
+	 * changed.
+	 */
+        rtas_st(rets, 0, RTAS_OUT_SUCCESS);
         return;
     }
 
     /*
      * vCPU issuing "ibm,nmi-interlock" is done with NMI handling,
-     * hence unset mc_status.
+     * hence unset fwnmi_machine_check_interlock.
      */
-    spapr->mc_status = -1;
-    qemu_cond_signal(&spapr->mc_delivery_cond);
+    spapr->fwnmi_machine_check_interlock = -1;
+    qemu_cond_signal(&spapr->fwnmi_machine_check_interlock_cond);
     rtas_st(rets, 0, RTAS_OUT_SUCCESS);
     migrate_del_blocker(spapr->fwnmi_migration_blocker);
 }
diff --git a/hw/rdma/vmw/pvrdma_qp_ops.c b/hw/rdma/vmw/pvrdma_qp_ops.c
index bd6db858de..8050287a6c 100644
--- a/hw/rdma/vmw/pvrdma_qp_ops.c
+++ b/hw/rdma/vmw/pvrdma_qp_ops.c
@@ -34,13 +34,13 @@ typedef struct CompHandlerCtx {
 /* Send Queue WQE */
 typedef struct PvrdmaSqWqe {
     struct pvrdma_sq_wqe_hdr hdr;
-    struct pvrdma_sge sge[0];
+    struct pvrdma_sge sge[];
 } PvrdmaSqWqe;
 
 /* Recv Queue WQE */
 typedef struct PvrdmaRqWqe {
     struct pvrdma_rq_wqe_hdr hdr;
-    struct pvrdma_sge sge[0];
+    struct pvrdma_sge sge[];
 } PvrdmaRqWqe;
 
 /*
diff --git a/hw/riscv/sifive_e.c b/hw/riscv/sifive_e.c
index a254cad489..646553a7c3 100644
--- a/hw/riscv/sifive_e.c
+++ b/hw/riscv/sifive_e.c
@@ -145,8 +145,8 @@ static void riscv_sifive_e_soc_realize(DeviceState *dev, Error **errp)
                             &error_abort);
 
     /* Mask ROM */
-    memory_region_init_rom(&s->mask_rom, NULL, "riscv.sifive.e.mrom",
-        memmap[SIFIVE_E_MROM].size, &error_fatal);
+    memory_region_init_rom(&s->mask_rom, OBJECT(dev), "riscv.sifive.e.mrom",
+                           memmap[SIFIVE_E_MROM].size, &error_fatal);
     memory_region_add_subregion(sys_mem,
         memmap[SIFIVE_E_MROM].base, &s->mask_rom);
 
@@ -208,9 +208,8 @@ static void riscv_sifive_e_soc_realize(DeviceState *dev, Error **errp)
         memmap[SIFIVE_E_PWM2].base, memmap[SIFIVE_E_PWM2].size);
 
     /* Flash memory */
-    memory_region_init_ram(&s->xip_mem, NULL, "riscv.sifive.e.xip",
-        memmap[SIFIVE_E_XIP].size, &error_fatal);
-    memory_region_set_readonly(&s->xip_mem, true);
+    memory_region_init_rom(&s->xip_mem, OBJECT(dev), "riscv.sifive.e.xip",
+                           memmap[SIFIVE_E_XIP].size, &error_fatal);
     memory_region_add_subregion(sys_mem, memmap[SIFIVE_E_XIP].base,
         &s->xip_mem);
 }
diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
index 4409ea1ccc..56351c4faa 100644
--- a/hw/riscv/sifive_u.c
+++ b/hw/riscv/sifive_u.c
@@ -501,7 +501,7 @@ static void riscv_sifive_u_soc_realize(DeviceState *dev, Error **errp)
                              &error_abort);
 
     /* boot rom */
-    memory_region_init_rom(mask_rom, NULL, "riscv.sifive.u.mrom",
+    memory_region_init_rom(mask_rom, OBJECT(dev), "riscv.sifive.u.mrom",
                            memmap[SIFIVE_U_MROM].size, &error_fatal);
     memory_region_add_subregion(system_memory, memmap[SIFIVE_U_MROM].base,
                                 mask_rom);
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index 50cf95b781..64f928fc7d 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -193,7 +193,7 @@ typedef struct VirtioThinintInfo {
 typedef struct VirtioRevInfo {
     uint16_t revision;
     uint16_t length;
-    uint8_t data[0];
+    uint8_t data[];
 } QEMU_PACKED VirtioRevInfo;
 
 /* Specify where the virtqueues for the subchannel are in guest memory. */
diff --git a/hw/scsi/spapr_vscsi.c b/hw/scsi/spapr_vscsi.c
index 7d584e7732..923488beb2 100644
--- a/hw/scsi/spapr_vscsi.c
+++ b/hw/scsi/spapr_vscsi.c
@@ -55,6 +55,8 @@
 #define VSCSI_MAX_SECTORS       4096
 #define VSCSI_REQ_LIMIT         24
 
+/* Maximum size of a IU payload */
+#define SRP_MAX_IU_DATA_LEN     (SRP_MAX_IU_LEN - sizeof(union srp_iu))
 #define SRP_RSP_SENSE_DATA_LEN  18
 
 #define SRP_REPORT_LUNS_WLUN    0xc10100000000000ULL
@@ -66,7 +68,7 @@ typedef union vscsi_crq {
 
 typedef struct vscsi_req {
     vscsi_crq               crq;
-    union viosrp_iu         iu;
+    uint8_t                 viosrp_iu_buf[SRP_MAX_IU_LEN];
 
     /* SCSI request tracking */
     SCSIRequest             *sreq;
@@ -97,6 +99,11 @@ typedef struct {
     vscsi_req reqs[VSCSI_REQ_LIMIT];
 } VSCSIState;
 
+static union viosrp_iu *req_iu(vscsi_req *req)
+{
+    return (union viosrp_iu *)req->viosrp_iu_buf;
+}
+
 static struct vscsi_req *vscsi_get_req(VSCSIState *s)
 {
     vscsi_req *req;
@@ -121,7 +128,7 @@ static struct vscsi_req *vscsi_find_req(VSCSIState *s, uint64_t srp_tag)
 
     for (i = 0; i < VSCSI_REQ_LIMIT; i++) {
         req = &s->reqs[i];
-        if (req->iu.srp.cmd.tag == srp_tag) {
+        if (req_iu(req)->srp.cmd.tag == srp_tag) {
             return req;
         }
     }
@@ -176,9 +183,11 @@ static int vscsi_send_iu(VSCSIState *s, vscsi_req *req,
 {
     long rc, rc1;
 
+    assert(length <= SRP_MAX_IU_LEN);
+
     /* First copy the SRP */
     rc = spapr_vio_dma_write(&s->vdev, req->crq.s.IU_data_ptr,
-                             &req->iu, length);
+                             &req->viosrp_iu_buf, length);
     if (rc) {
         fprintf(stderr, "vscsi_send_iu: DMA write failure !\n");
     }
@@ -188,7 +197,7 @@ static int vscsi_send_iu(VSCSIState *s, vscsi_req *req,
     req->crq.s.reserved = 0x00;
     req->crq.s.timeout = cpu_to_be16(0x0000);
     req->crq.s.IU_length = cpu_to_be16(length);
-    req->crq.s.IU_data_ptr = req->iu.srp.rsp.tag; /* right byte order */
+    req->crq.s.IU_data_ptr = req_iu(req)->srp.rsp.tag; /* right byte order */
 
     if (rc == 0) {
         req->crq.s.status = VIOSRP_OK;
@@ -224,7 +233,7 @@ static void vscsi_makeup_sense(VSCSIState *s, vscsi_req *req,
 static int vscsi_send_rsp(VSCSIState *s, vscsi_req *req,
                           uint8_t status, int32_t res_in, int32_t res_out)
 {
-    union viosrp_iu *iu = &req->iu;
+    union viosrp_iu *iu = req_iu(req);
     uint64_t tag = iu->srp.rsp.tag;
     int total_len = sizeof(iu->srp.rsp);
     uint8_t sol_not = iu->srp.cmd.sol_not;
@@ -261,10 +270,12 @@ static int vscsi_send_rsp(VSCSIState *s, vscsi_req *req,
     if (status) {
         iu->srp.rsp.sol_not = (sol_not & 0x04) >> 2;
         if (req->senselen) {
-            req->iu.srp.rsp.flags |= SRP_RSP_FLAG_SNSVALID;
-            req->iu.srp.rsp.sense_data_len = cpu_to_be32(req->senselen);
-            memcpy(req->iu.srp.rsp.data, req->sense, req->senselen);
-            total_len += req->senselen;
+            int sense_data_len = MIN(req->senselen, SRP_MAX_IU_DATA_LEN);
+
+            iu->srp.rsp.flags |= SRP_RSP_FLAG_SNSVALID;
+            iu->srp.rsp.sense_data_len = cpu_to_be32(sense_data_len);
+            memcpy(iu->srp.rsp.data, req->sense, sense_data_len);
+            total_len += sense_data_len;
         }
     } else {
         iu->srp.rsp.sol_not = (sol_not & 0x02) >> 1;
@@ -285,7 +296,7 @@ static int vscsi_fetch_desc(VSCSIState *s, struct vscsi_req *req,
                             unsigned n, unsigned buf_offset,
                             struct srp_direct_buf *ret)
 {
-    struct srp_cmd *cmd = &req->iu.srp.cmd;
+    struct srp_cmd *cmd = &req_iu(req)->srp.cmd;
 
     switch (req->dma_fmt) {
     case SRP_NO_DATA_DESC: {
@@ -473,7 +484,7 @@ static int data_out_desc_size(struct srp_cmd *cmd)
 
 static int vscsi_preprocess_desc(vscsi_req *req)
 {
-    struct srp_cmd *cmd = &req->iu.srp.cmd;
+    struct srp_cmd *cmd = &req_iu(req)->srp.cmd;
 
     req->cdb_offset = cmd->add_cdb_len & ~3;
 
@@ -597,7 +608,7 @@ static const VMStateDescription vmstate_spapr_vscsi_req = {
     .minimum_version_id = 1,
     .fields = (VMStateField[]) {
         VMSTATE_BUFFER(crq.raw, vscsi_req),
-        VMSTATE_BUFFER(iu.srp.reserved, vscsi_req),
+        VMSTATE_BUFFER(viosrp_iu_buf, vscsi_req),
         VMSTATE_UINT32(qtag, vscsi_req),
         VMSTATE_BOOL(active, vscsi_req),
         VMSTATE_UINT32(data_len, vscsi_req),
@@ -655,7 +666,7 @@ static void *vscsi_load_request(QEMUFile *f, SCSIRequest *sreq)
 
 static void vscsi_process_login(VSCSIState *s, vscsi_req *req)
 {
-    union viosrp_iu *iu = &req->iu;
+    union viosrp_iu *iu = req_iu(req);
     struct srp_login_rsp *rsp = &iu->srp.login_rsp;
     uint64_t tag = iu->srp.rsp.tag;
 
@@ -671,8 +682,8 @@ static void vscsi_process_login(VSCSIState *s, vscsi_req *req)
      */
     rsp->req_lim_delta = cpu_to_be32(VSCSI_REQ_LIMIT-2);
     rsp->tag = tag;
-    rsp->max_it_iu_len = cpu_to_be32(sizeof(union srp_iu));
-    rsp->max_ti_iu_len = cpu_to_be32(sizeof(union srp_iu));
+    rsp->max_it_iu_len = cpu_to_be32(SRP_MAX_IU_LEN);
+    rsp->max_ti_iu_len = cpu_to_be32(SRP_MAX_IU_LEN);
     /* direct and indirect */
     rsp->buf_fmt = cpu_to_be16(SRP_BUF_FORMAT_DIRECT | SRP_BUF_FORMAT_INDIRECT);
 
@@ -681,7 +692,7 @@ static void vscsi_process_login(VSCSIState *s, vscsi_req *req)
 
 static void vscsi_inquiry_no_target(VSCSIState *s, vscsi_req *req)
 {
-    uint8_t *cdb = req->iu.srp.cmd.cdb;
+    uint8_t *cdb = req_iu(req)->srp.cmd.cdb;
     uint8_t resp_data[36];
     int rc, len, alen;
 
@@ -770,7 +781,7 @@ static void vscsi_report_luns(VSCSIState *s, vscsi_req *req)
 
 static int vscsi_queue_cmd(VSCSIState *s, vscsi_req *req)
 {
-    union srp_iu *srp = &req->iu.srp;
+    union srp_iu *srp = &req_iu(req)->srp;
     SCSIDevice *sdev;
     int n, lun;
 
@@ -821,17 +832,16 @@ static int vscsi_queue_cmd(VSCSIState *s, vscsi_req *req)
 
 static int vscsi_process_tsk_mgmt(VSCSIState *s, vscsi_req *req)
 {
-    union viosrp_iu *iu = &req->iu;
+    union viosrp_iu *iu = req_iu(req);
     vscsi_req *tmpreq;
     int i, lun = 0, resp = SRP_TSK_MGMT_COMPLETE;
     SCSIDevice *d;
     uint64_t tag = iu->srp.rsp.tag;
     uint8_t sol_not = iu->srp.cmd.sol_not;
 
-    fprintf(stderr, "vscsi_process_tsk_mgmt %02x\n",
-            iu->srp.tsk_mgmt.tsk_mgmt_func);
-
-    d = vscsi_device_find(&s->bus, be64_to_cpu(req->iu.srp.tsk_mgmt.lun), &lun);
+    trace_spapr_vscsi_process_tsk_mgmt(iu->srp.tsk_mgmt.tsk_mgmt_func);
+    d = vscsi_device_find(&s->bus,
+                          be64_to_cpu(req_iu(req)->srp.tsk_mgmt.lun), &lun);
     if (!d) {
         resp = SRP_TSK_MGMT_FIELDS_INVALID;
     } else {
@@ -842,7 +852,7 @@ static int vscsi_process_tsk_mgmt(VSCSIState *s, vscsi_req *req)
                 break;
             }
 
-            tmpreq = vscsi_find_req(s, req->iu.srp.tsk_mgmt.task_tag);
+            tmpreq = vscsi_find_req(s, req_iu(req)->srp.tsk_mgmt.task_tag);
             if (tmpreq && tmpreq->sreq) {
                 assert(tmpreq->sreq->hba_private);
                 scsi_req_cancel(tmpreq->sreq);
@@ -867,7 +877,8 @@ static int vscsi_process_tsk_mgmt(VSCSIState *s, vscsi_req *req)
 
             for (i = 0; i < VSCSI_REQ_LIMIT; i++) {
                 tmpreq = &s->reqs[i];
-                if (tmpreq->iu.srp.cmd.lun != req->iu.srp.tsk_mgmt.lun) {
+                if (req_iu(tmpreq)->srp.cmd.lun
+                        != req_iu(req)->srp.tsk_mgmt.lun) {
                     continue;
                 }
                 if (!tmpreq->active || !tmpreq->sreq) {
@@ -889,6 +900,7 @@ static int vscsi_process_tsk_mgmt(VSCSIState *s, vscsi_req *req)
     }
 
     /* Compose the response here as  */
+    QEMU_BUILD_BUG_ON(SRP_MAX_IU_DATA_LEN < 4);
     memset(iu, 0, sizeof(struct srp_rsp) + 4);
     iu->srp.rsp.opcode = SRP_RSP;
     iu->srp.rsp.req_lim_delta = cpu_to_be32(1);
@@ -911,7 +923,7 @@ static int vscsi_process_tsk_mgmt(VSCSIState *s, vscsi_req *req)
 
 static int vscsi_handle_srp_req(VSCSIState *s, vscsi_req *req)
 {
-    union srp_iu *srp = &req->iu.srp;
+    union srp_iu *srp = &req_iu(req)->srp;
     int done = 1;
     uint8_t opcode = srp->rsp.opcode;
 
@@ -948,7 +960,7 @@ static int vscsi_send_adapter_info(VSCSIState *s, vscsi_req *req)
     struct mad_adapter_info_data info;
     int rc;
 
-    sinfo = &req->iu.mad.adapter_info;
+    sinfo = &req_iu(req)->mad.adapter_info;
 
 #if 0 /* What for ? */
     rc = spapr_vio_dma_read(&s->vdev, be64_to_cpu(sinfo->buffer),
@@ -984,7 +996,7 @@ static int vscsi_send_capabilities(VSCSIState *s, vscsi_req *req)
     uint64_t buffer;
     int rc;
 
-    vcap = &req->iu.mad.capabilities;
+    vcap = &req_iu(req)->mad.capabilities;
     req_len = len = be16_to_cpu(vcap->common.length);
     buffer = be64_to_cpu(vcap->buffer);
     if (len > sizeof(cap)) {
@@ -1029,7 +1041,7 @@ static int vscsi_send_capabilities(VSCSIState *s, vscsi_req *req)
 
 static int vscsi_handle_mad_req(VSCSIState *s, vscsi_req *req)
 {
-    union mad_iu *mad = &req->iu.mad;
+    union mad_iu *mad = &req_iu(req)->mad;
     bool request_handled = false;
     uint64_t retlen = 0;
 
@@ -1088,7 +1100,7 @@ static void vscsi_got_payload(VSCSIState *s, vscsi_crq *crq)
      * in our 256 bytes IUs. If not we'll have to increase the size
      * of the structure.
      */
-    if (crq->s.IU_length > sizeof(union viosrp_iu)) {
+    if (crq->s.IU_length > SRP_MAX_IU_LEN) {
         fprintf(stderr, "VSCSI: SRP IU too long (%d bytes) !\n",
                 crq->s.IU_length);
         vscsi_put_req(req);
@@ -1096,7 +1108,7 @@ static void vscsi_got_payload(VSCSIState *s, vscsi_crq *crq)
     }
 
     /* XXX Handle failure differently ? */
-    if (spapr_vio_dma_read(&s->vdev, crq->s.IU_data_ptr, &req->iu,
+    if (spapr_vio_dma_read(&s->vdev, crq->s.IU_data_ptr, &req->viosrp_iu_buf,
                            crq->s.IU_length)) {
         fprintf(stderr, "vscsi_got_payload: DMA read failure !\n");
         vscsi_put_req(req);
diff --git a/hw/scsi/trace-events b/hw/scsi/trace-events
index b0820052f8..9a4a60ca63 100644
--- a/hw/scsi/trace-events
+++ b/hw/scsi/trace-events
@@ -227,6 +227,7 @@ spapr_vscsi_command_complete_status(uint32_t status) "Command complete err=%"PRI
 spapr_vscsi_save_request(uint32_t qtag, unsigned desc, unsigned offset) "saving tag=%"PRIu32", current desc#%u, offset=0x%x"
 spapr_vscsi_load_request(uint32_t qtag, unsigned desc, unsigned offset) "restoring tag=%"PRIu32", current desc#%u, offset=0x%x"
 spapr_vscsi_process_login(void) "Got login, sending response !"
+spapr_vscsi_process_tsk_mgmt(uint8_t func) "tsk_mgmt_func 0x%02x"
 spapr_vscsi_queue_cmd_no_drive(uint64_t lun) "Command for lun 0x%08" PRIx64 " with no drive"
 spapr_vscsi_queue_cmd(uint32_t qtag, unsigned cdb, const char *cmd, int lun, int ret) "Queued command tag 0x%"PRIx32" CMD 0x%x=%s LUN %d ret: %d"
 spapr_vscsi_do_crq(unsigned c0, unsigned c1) "crq: %02x %02x ..."
diff --git a/hw/scsi/viosrp.h b/hw/scsi/viosrp.h
index d8e365db1e..e5f9768e8f 100644
--- a/hw/scsi/viosrp.h
+++ b/hw/scsi/viosrp.h
@@ -34,6 +34,8 @@
 #ifndef PPC_VIOSRP_H
 #define PPC_VIOSRP_H
 
+#include "hw/scsi/srp.h"
+
 #define SRP_VERSION "16.a"
 #define SRP_MAX_IU_LEN    256
 #define SRP_MAX_LOC_LEN 32
@@ -47,7 +49,6 @@ union srp_iu {
     struct srp_tsk_mgmt tsk_mgmt;
     struct srp_cmd cmd;
     struct srp_rsp rsp;
-    uint8_t reserved[SRP_MAX_IU_LEN];
 };
 
 enum viosrp_crq_formats {
diff --git a/hw/sh4/shix.c b/hw/sh4/shix.c
index 68b14ee5e7..f410c08883 100644
--- a/hw/sh4/shix.c
+++ b/hw/sh4/shix.c
@@ -53,8 +53,7 @@ static void shix_init(MachineState *machine)
     cpu = SUPERH_CPU(cpu_create(machine->cpu_type));
 
     /* Allocate memory space */
-    memory_region_init_ram(rom, NULL, "shix.rom", 0x4000, &error_fatal);
-    memory_region_set_readonly(rom, true);
+    memory_region_init_rom(rom, NULL, "shix.rom", 0x4000, &error_fatal);
     memory_region_add_subregion(sysmem, 0x00000000, rom);
     memory_region_init_ram(&sdram[0], NULL, "shix.sdram1", 0x01000000,
                            &error_fatal);
diff --git a/hw/sparc/leon3.c b/hw/sparc/leon3.c
index 5fa58aa55f..8f024dab7b 100644
--- a/hw/sparc/leon3.c
+++ b/hw/sparc/leon3.c
@@ -255,8 +255,7 @@ static void leon3_generic_hw_init(MachineState *machine)
 
     /* Allocate BIOS */
     prom_size = 8 * MiB;
-    memory_region_init_ram(prom, NULL, "Leon3.bios", prom_size, &error_fatal);
-    memory_region_set_readonly(prom, true);
+    memory_region_init_rom(prom, NULL, "Leon3.bios", prom_size, &error_fatal);
     memory_region_add_subregion(address_space_mem, LEON3_PROM_OFFSET, prom);
 
     /* Load boot prom */
diff --git a/hw/ssi/aspeed_smc.c b/hw/ssi/aspeed_smc.c
index 32be2a02b0..9d5c696d5a 100644
--- a/hw/ssi/aspeed_smc.c
+++ b/hw/ssi/aspeed_smc.c
@@ -788,11 +788,11 @@ static int aspeed_smc_num_dummies(uint8_t command)
     case FAST_READ:
     case DOR:
     case QOR:
+    case FAST_READ_4:
     case DOR_4:
     case QOR_4:
         return 1;
     case DIOR:
-    case FAST_READ_4:
     case DIOR_4:
         return 2;
     case QIOR:
diff --git a/hw/usb/Kconfig b/hw/usb/Kconfig
index 5e70ed5f7b..464348ba14 100644
--- a/hw/usb/Kconfig
+++ b/hw/usb/Kconfig
@@ -91,3 +91,8 @@ config USB_STORAGE_MTP
     bool
     default y
     depends on USB
+
+config IMX_USBPHY
+    bool
+    default y
+    depends on USB
diff --git a/hw/usb/Makefile.objs b/hw/usb/Makefile.objs
index 2b10868937..66835e5bf7 100644
--- a/hw/usb/Makefile.objs
+++ b/hw/usb/Makefile.objs
@@ -61,3 +61,5 @@ common-obj-$(CONFIG_XEN) += xen-usb.o
 xen-usb.o-cflags := $(LIBUSB_CFLAGS)
 xen-usb.o-libs := $(LIBUSB_LIBS)
 endif
+
+common-obj-$(CONFIG_IMX_USBPHY) += imx-usb-phy.o
diff --git a/hw/usb/dev-network.c b/hw/usb/dev-network.c
index 9a78ad928b..6210427544 100644
--- a/hw/usb/dev-network.c
+++ b/hw/usb/dev-network.c
@@ -626,7 +626,7 @@ static const uint32_t oid_supported_list[] =
 struct rndis_response {
     QTAILQ_ENTRY(rndis_response) entries;
     uint32_t length;
-    uint8_t buf[0];
+    uint8_t buf[];
 };
 
 typedef struct USBNetState {
diff --git a/hw/usb/dev-smartcard-reader.c b/hw/usb/dev-smartcard-reader.c
index 02693a26ad..ef72738ced 100644
--- a/hw/usb/dev-smartcard-reader.c
+++ b/hw/usb/dev-smartcard-reader.c
@@ -227,7 +227,7 @@ typedef struct QEMU_PACKED CCID_Parameter {
 typedef struct QEMU_PACKED CCID_DataBlock {
     CCID_BULK_IN b;
     uint8_t      bChainParameter;
-    uint8_t      abData[0];
+    uint8_t      abData[];
 } CCID_DataBlock;
 
 /* 6.1.4 PC_to_RDR_XfrBlock */
@@ -235,7 +235,7 @@ typedef struct QEMU_PACKED CCID_XferBlock {
     CCID_Header  hdr;
     uint8_t      bBWI; /* Block Waiting Timeout */
     uint16_t     wLevelParameter; /* XXX currently unused */
-    uint8_t      abData[0];
+    uint8_t      abData[];
 } CCID_XferBlock;
 
 typedef struct QEMU_PACKED CCID_IccPowerOn {
diff --git a/hw/usb/imx-usb-phy.c b/hw/usb/imx-usb-phy.c
new file mode 100644
index 0000000000..e705a03a1f
--- /dev/null
+++ b/hw/usb/imx-usb-phy.c
@@ -0,0 +1,225 @@
+/*
+ * i.MX USB PHY
+ *
+ * Copyright (c) 2020 Guenter Roeck <linux@roeck-us.net>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ * We need to implement basic reset control in the PHY control register.
+ * For everything else, it is sufficient to set whatever is written.
+ */
+
+#include "qemu/osdep.h"
+#include "hw/usb/imx-usb-phy.h"
+#include "migration/vmstate.h"
+#include "qemu/log.h"
+#include "qemu/module.h"
+
+static const VMStateDescription vmstate_imx_usbphy = {
+    .name = TYPE_IMX_USBPHY,
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_UINT32_ARRAY(usbphy, IMXUSBPHYState, USBPHY_MAX),
+        VMSTATE_END_OF_LIST()
+    },
+};
+
+static void imx_usbphy_softreset(IMXUSBPHYState *s)
+{
+    s->usbphy[USBPHY_PWD] = 0x001e1c00;
+    s->usbphy[USBPHY_TX] = 0x10060607;
+    s->usbphy[USBPHY_RX] = 0x00000000;
+    s->usbphy[USBPHY_CTRL] = 0xc0200000;
+}
+
+static void imx_usbphy_reset(DeviceState *dev)
+{
+    IMXUSBPHYState *s = IMX_USBPHY(dev);
+
+    s->usbphy[USBPHY_STATUS] = 0x00000000;
+    s->usbphy[USBPHY_DEBUG] = 0x7f180000;
+    s->usbphy[USBPHY_DEBUG0_STATUS] = 0x00000000;
+    s->usbphy[USBPHY_DEBUG1] = 0x00001000;
+    s->usbphy[USBPHY_VERSION] = 0x04020000;
+
+    imx_usbphy_softreset(s);
+}
+
+static uint64_t imx_usbphy_read(void *opaque, hwaddr offset, unsigned size)
+{
+    IMXUSBPHYState *s = (IMXUSBPHYState *)opaque;
+    uint32_t index = offset >> 2;
+    uint32_t value;
+
+    switch (index) {
+    case USBPHY_PWD_SET:
+    case USBPHY_TX_SET:
+    case USBPHY_RX_SET:
+    case USBPHY_CTRL_SET:
+    case USBPHY_DEBUG_SET:
+    case USBPHY_DEBUG1_SET:
+        /*
+         * All REG_NAME_SET register access are in fact targeting the
+         * REG_NAME register.
+         */
+        value = s->usbphy[index - 1];
+        break;
+    case USBPHY_PWD_CLR:
+    case USBPHY_TX_CLR:
+    case USBPHY_RX_CLR:
+    case USBPHY_CTRL_CLR:
+    case USBPHY_DEBUG_CLR:
+    case USBPHY_DEBUG1_CLR:
+        /*
+         * All REG_NAME_CLR register access are in fact targeting the
+         * REG_NAME register.
+         */
+        value = s->usbphy[index - 2];
+        break;
+    case USBPHY_PWD_TOG:
+    case USBPHY_TX_TOG:
+    case USBPHY_RX_TOG:
+    case USBPHY_CTRL_TOG:
+    case USBPHY_DEBUG_TOG:
+    case USBPHY_DEBUG1_TOG:
+        /*
+         * All REG_NAME_TOG register access are in fact targeting the
+         * REG_NAME register.
+         */
+        value = s->usbphy[index - 3];
+        break;
+    default:
+        value = s->usbphy[index];
+        break;
+    }
+    return (uint64_t)value;
+}
+
+static void imx_usbphy_write(void *opaque, hwaddr offset, uint64_t value,
+                             unsigned size)
+{
+    IMXUSBPHYState *s = (IMXUSBPHYState *)opaque;
+    uint32_t index = offset >> 2;
+
+    switch (index) {
+    case USBPHY_CTRL:
+        s->usbphy[index] = value;
+        if (value & USBPHY_CTRL_SFTRST) {
+            imx_usbphy_softreset(s);
+        }
+        break;
+    case USBPHY_PWD:
+    case USBPHY_TX:
+    case USBPHY_RX:
+    case USBPHY_STATUS:
+    case USBPHY_DEBUG:
+    case USBPHY_DEBUG1:
+        s->usbphy[index] = value;
+        break;
+    case USBPHY_CTRL_SET:
+        s->usbphy[index - 1] |= value;
+        if (value & USBPHY_CTRL_SFTRST) {
+            imx_usbphy_softreset(s);
+        }
+        break;
+    case USBPHY_PWD_SET:
+    case USBPHY_TX_SET:
+    case USBPHY_RX_SET:
+    case USBPHY_DEBUG_SET:
+    case USBPHY_DEBUG1_SET:
+        /*
+         * All REG_NAME_SET register access are in fact targeting the
+         * REG_NAME register. So we change the value of the REG_NAME
+         * register, setting bits passed in the value.
+         */
+        s->usbphy[index - 1] |= value;
+        break;
+    case USBPHY_PWD_CLR:
+    case USBPHY_TX_CLR:
+    case USBPHY_RX_CLR:
+    case USBPHY_CTRL_CLR:
+    case USBPHY_DEBUG_CLR:
+    case USBPHY_DEBUG1_CLR:
+        /*
+         * All REG_NAME_CLR register access are in fact targeting the
+         * REG_NAME register. So we change the value of the REG_NAME
+         * register, unsetting bits passed in the value.
+         */
+        s->usbphy[index - 2] &= ~value;
+        break;
+    case USBPHY_CTRL_TOG:
+        s->usbphy[index - 3] ^= value;
+        if ((value & USBPHY_CTRL_SFTRST) &&
+            (s->usbphy[index - 3] & USBPHY_CTRL_SFTRST)) {
+            imx_usbphy_softreset(s);
+        }
+        break;
+    case USBPHY_PWD_TOG:
+    case USBPHY_TX_TOG:
+    case USBPHY_RX_TOG:
+    case USBPHY_DEBUG_TOG:
+    case USBPHY_DEBUG1_TOG:
+        /*
+         * All REG_NAME_TOG register access are in fact targeting the
+         * REG_NAME register. So we change the value of the REG_NAME
+         * register, toggling bits passed in the value.
+         */
+        s->usbphy[index - 3] ^= value;
+        break;
+    default:
+        /* Other registers are read-only */
+        break;
+    }
+}
+
+static const struct MemoryRegionOps imx_usbphy_ops = {
+    .read = imx_usbphy_read,
+    .write = imx_usbphy_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+    .valid = {
+        /*
+         * Our device would not work correctly if the guest was doing
+         * unaligned access. This might not be a limitation on the real
+         * device but in practice there is no reason for a guest to access
+         * this device unaligned.
+         */
+        .min_access_size = 4,
+        .max_access_size = 4,
+        .unaligned = false,
+    },
+};
+
+static void imx_usbphy_realize(DeviceState *dev, Error **errp)
+{
+    IMXUSBPHYState *s = IMX_USBPHY(dev);
+
+    memory_region_init_io(&s->iomem, OBJECT(s), &imx_usbphy_ops, s,
+                          "imx-usbphy", 0x1000);
+    sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->iomem);
+}
+
+static void imx_usbphy_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->reset = imx_usbphy_reset;
+    dc->vmsd = &vmstate_imx_usbphy;
+    dc->desc = "i.MX USB PHY Module";
+    dc->realize = imx_usbphy_realize;
+}
+
+static const TypeInfo imx_usbphy_info = {
+    .name          = TYPE_IMX_USBPHY,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(IMXUSBPHYState),
+    .class_init    = imx_usbphy_class_init,
+};
+
+static void imx_usbphy_register_types(void)
+{
+    type_register_static(&imx_usbphy_info);
+}
+
+type_init(imx_usbphy_register_types)
diff --git a/hw/usb/quirks.c b/hw/usb/quirks.c
index 38a9c5634a..23ea7a23ea 100644
--- a/hw/usb/quirks.c
+++ b/hw/usb/quirks.c
@@ -22,10 +22,10 @@ static bool usb_id_match(const struct usb_device_id *ids,
                          uint8_t interface_protocol) {
     int i;
 
-    for (i = 0; ids[i].vendor_id != -1; i++) {
+    for (i = 0; ids[i].terminating_entry == 0; i++) {
         if (ids[i].vendor_id  == vendor_id &&
             ids[i].product_id == product_id &&
-            (ids[i].interface_class == -1 ||
+            (ids[i].interface_protocol_used == 0 ||
              (ids[i].interface_class == interface_class &&
               ids[i].interface_subclass == interface_subclass &&
               ids[i].interface_protocol == interface_protocol))) {
diff --git a/hw/usb/quirks.h b/hw/usb/quirks.h
index 89480befd7..50ef2f9c2e 100644
--- a/hw/usb/quirks.h
+++ b/hw/usb/quirks.h
@@ -21,19 +21,23 @@
 #include "quirks-pl2303-ids.h"
 
 struct usb_device_id {
-    int vendor_id;
-    int product_id;
-    int interface_class;
-    int interface_subclass;
-    int interface_protocol;
+    uint16_t vendor_id;
+    uint16_t product_id;
+    uint8_t interface_class;
+    uint8_t interface_subclass;
+    uint8_t interface_protocol;
+    uint8_t interface_protocol_used:1,
+            terminating_entry:1,
+            reserved:6;
 };
 
 #define USB_DEVICE(vendor, product) \
-    .vendor_id = vendor, .product_id = product, .interface_class = -1,
+    .vendor_id = vendor, .product_id = product, .interface_protocol_used = 0,
 
 #define USB_DEVICE_AND_INTERFACE_INFO(vend, prod, iclass, isubclass, iproto) \
     .vendor_id = vend, .product_id = prod, .interface_class = iclass, \
-    .interface_subclass = isubclass, .interface_protocol = iproto
+    .interface_subclass = isubclass, .interface_protocol = iproto, \
+    .interface_protocol_used = 1
 
 static const struct usb_device_id usbredir_raw_serial_ids[] = {
     /*
@@ -206,7 +210,7 @@ static const struct usb_device_id usbredir_raw_serial_ids[] = {
     { USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530_PRODUCT_ID) },
     { USB_DEVICE(SMART_VENDOR_ID, SMART_PRODUCT_ID) },
 
-    { USB_DEVICE(-1, -1) } /* Terminating Entry */
+    { .terminating_entry = 1 } /* Terminating Entry */
 };
 
 static const struct usb_device_id usbredir_ftdi_serial_ids[] = {
@@ -906,7 +910,7 @@ static const struct usb_device_id usbredir_ftdi_serial_ids[] = {
     { USB_DEVICE(FTDI_VID, FTDI_DISTORTEC_JTAG_LOCK_PICK_PID) },
     { USB_DEVICE(FTDI_VID, FTDI_LUMEL_PD12_PID) },
 
-    { USB_DEVICE(-1, -1) } /* Terminating Entry */
+    { .terminating_entry = 1 } /* Terminating Entry */
 };
 
 #undef USB_DEVICE
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index b2d415e5dd..b6c8ef5bc0 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -54,7 +54,7 @@ typedef struct VRingAvail
 {
     uint16_t flags;
     uint16_t idx;
-    uint16_t ring[0];
+    uint16_t ring[];
 } VRingAvail;
 
 typedef struct VRingUsedElem
@@ -67,7 +67,7 @@ typedef struct VRingUsed
 {
     uint16_t flags;
     uint16_t idx;
-    VRingUsedElem ring[0];
+    VRingUsedElem ring[];
 } VRingUsed;
 
 typedef struct VRingMemoryRegionCaches {
diff --git a/hw/xen/xen_pt.h b/hw/xen/xen_pt.h
index 9167bbaf6d..179775db7b 100644
--- a/hw/xen/xen_pt.h
+++ b/hw/xen/xen_pt.h
@@ -203,7 +203,7 @@ typedef struct XenPTMSIX {
     uint64_t mmio_base_addr;
     MemoryRegion mmio;
     void *phys_iomem_base;
-    XenPTMSIXEntry msix_entry[0];
+    XenPTMSIXEntry msix_entry[];
 } XenPTMSIX;
 
 struct XenPCIPassthroughState {
diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h
index 57a3f58b0c..c13327fa78 100644
--- a/include/hw/acpi/acpi-defs.h
+++ b/include/hw/acpi/acpi-defs.h
@@ -152,7 +152,7 @@ typedef struct AcpiSerialPortConsoleRedirection
  */
 struct AcpiRsdtDescriptorRev1 {
     ACPI_TABLE_HEADER_DEF       /* ACPI common table header */
-    uint32_t table_offset_entry[0];  /* Array of pointers to other */
+    uint32_t table_offset_entry[];  /* Array of pointers to other */
     /* ACPI tables */
 } QEMU_PACKED;
 typedef struct AcpiRsdtDescriptorRev1 AcpiRsdtDescriptorRev1;
@@ -162,7 +162,7 @@ typedef struct AcpiRsdtDescriptorRev1 AcpiRsdtDescriptorRev1;
  */
 struct AcpiXsdtDescriptorRev2 {
     ACPI_TABLE_HEADER_DEF       /* ACPI common table header */
-    uint64_t table_offset_entry[0];  /* Array of pointers to other */
+    uint64_t table_offset_entry[];  /* Array of pointers to other */
     /* ACPI tables */
 } QEMU_PACKED;
 typedef struct AcpiXsdtDescriptorRev2 AcpiXsdtDescriptorRev2;
@@ -518,7 +518,7 @@ struct AcpiDmarDeviceScope {
     struct {
         uint8_t device;
         uint8_t function;
-    } path[0];
+    } path[];
 } QEMU_PACKED;
 typedef struct AcpiDmarDeviceScope AcpiDmarDeviceScope;
 
@@ -530,7 +530,7 @@ struct AcpiDmarHardwareUnit {
     uint8_t reserved;
     uint16_t pci_segment;   /* The PCI Segment associated with this unit */
     uint64_t address;   /* Base address of remapping hardware register-set */
-    AcpiDmarDeviceScope scope[0];
+    AcpiDmarDeviceScope scope[];
 } QEMU_PACKED;
 typedef struct AcpiDmarHardwareUnit AcpiDmarHardwareUnit;
 
@@ -541,7 +541,7 @@ struct AcpiDmarRootPortATS {
     uint8_t flags;
     uint8_t reserved;
     uint16_t pci_segment;
-    AcpiDmarDeviceScope scope[0];
+    AcpiDmarDeviceScope scope[];
 } QEMU_PACKED;
 typedef struct AcpiDmarRootPortATS AcpiDmarRootPortATS;
 
@@ -604,7 +604,7 @@ typedef struct AcpiIortMemoryAccess AcpiIortMemoryAccess;
 struct AcpiIortItsGroup {
     ACPI_IORT_NODE_HEADER_DEF
     uint32_t its_count;
-    uint32_t identifiers[0];
+    uint32_t identifiers[];
 } QEMU_PACKED;
 typedef struct AcpiIortItsGroup AcpiIortItsGroup;
 
@@ -621,7 +621,7 @@ struct AcpiIortSmmu3 {
     uint32_t pri_gsiv;
     uint32_t gerr_gsiv;
     uint32_t sync_gsiv;
-    AcpiIortIdMapping id_mapping_array[0];
+    AcpiIortIdMapping id_mapping_array[];
 } QEMU_PACKED;
 typedef struct AcpiIortSmmu3 AcpiIortSmmu3;
 
@@ -630,7 +630,7 @@ struct AcpiIortRC {
     AcpiIortMemoryAccess memory_properties;
     uint32_t ats_attribute;
     uint32_t pci_segment_number;
-    AcpiIortIdMapping id_mapping_array[0];
+    AcpiIortIdMapping id_mapping_array[];
 } QEMU_PACKED;
 typedef struct AcpiIortRC AcpiIortRC;
 
diff --git a/include/hw/arm/fsl-imx6.h b/include/hw/arm/fsl-imx6.h
index 60eadccb42..973bcb72f7 100644
--- a/include/hw/arm/fsl-imx6.h
+++ b/include/hw/arm/fsl-imx6.h
@@ -30,6 +30,8 @@
 #include "hw/sd/sdhci.h"
 #include "hw/ssi/imx_spi.h"
 #include "hw/net/imx_fec.h"
+#include "hw/usb/chipidea.h"
+#include "hw/usb/imx-usb-phy.h"
 #include "exec/memory.h"
 #include "cpu.h"
 
@@ -44,6 +46,8 @@
 #define FSL_IMX6_NUM_ESDHCS 4
 #define FSL_IMX6_NUM_ECSPIS 5
 #define FSL_IMX6_NUM_WDTS 2
+#define FSL_IMX6_NUM_USB_PHYS 2
+#define FSL_IMX6_NUM_USBS 4
 
 typedef struct FslIMX6State {
     /*< private >*/
@@ -62,6 +66,8 @@ typedef struct FslIMX6State {
     SDHCIState     esdhc[FSL_IMX6_NUM_ESDHCS];
     IMXSPIState    spi[FSL_IMX6_NUM_ECSPIS];
     IMX2WdtState   wdt[FSL_IMX6_NUM_WDTS];
+    IMXUSBPHYState usbphy[FSL_IMX6_NUM_USB_PHYS];
+    ChipideaState  usb[FSL_IMX6_NUM_USBS];
     IMXFECState    eth;
     MemoryRegion   rom;
     MemoryRegion   caam;
diff --git a/include/hw/arm/fsl-imx6ul.h b/include/hw/arm/fsl-imx6ul.h
index eda389aec7..1a0bab8daa 100644
--- a/include/hw/arm/fsl-imx6ul.h
+++ b/include/hw/arm/fsl-imx6ul.h
@@ -34,6 +34,8 @@
 #include "hw/sd/sdhci.h"
 #include "hw/ssi/imx_spi.h"
 #include "hw/net/imx_fec.h"
+#include "hw/usb/chipidea.h"
+#include "hw/usb/imx-usb-phy.h"
 #include "exec/memory.h"
 #include "cpu.h"
 
@@ -54,6 +56,8 @@ enum FslIMX6ULConfiguration {
     FSL_IMX6UL_NUM_I2CS         = 4,
     FSL_IMX6UL_NUM_ECSPIS       = 4,
     FSL_IMX6UL_NUM_ADCS         = 2,
+    FSL_IMX6UL_NUM_USB_PHYS     = 2,
+    FSL_IMX6UL_NUM_USBS         = 2,
 };
 
 typedef struct FslIMX6ULState {
@@ -77,6 +81,8 @@ typedef struct FslIMX6ULState {
     IMXFECState        eth[FSL_IMX6UL_NUM_ETHS];
     SDHCIState         usdhc[FSL_IMX6UL_NUM_USDHCS];
     IMX2WdtState       wdt[FSL_IMX6UL_NUM_WDTS];
+    IMXUSBPHYState     usbphy[FSL_IMX6UL_NUM_USB_PHYS];
+    ChipideaState      usb[FSL_IMX6UL_NUM_USBS];
     MemoryRegion       rom;
     MemoryRegion       caam;
     MemoryRegion       ocram;
@@ -145,6 +151,10 @@ enum FslIMX6ULMemoryMap {
     FSL_IMX6UL_EPIT2_ADDR           = 0x020D4000,
     FSL_IMX6UL_EPIT1_ADDR           = 0x020D0000,
     FSL_IMX6UL_SNVS_HP_ADDR         = 0x020CC000,
+    FSL_IMX6UL_USBPHY2_ADDR         = 0x020CA000,
+    FSL_IMX6UL_USBPHY2_SIZE         = (4 * 1024),
+    FSL_IMX6UL_USBPHY1_ADDR         = 0x020C9000,
+    FSL_IMX6UL_USBPHY1_SIZE         = (4 * 1024),
     FSL_IMX6UL_ANALOG_ADDR          = 0x020C8000,
     FSL_IMX6UL_CCM_ADDR             = 0x020C4000,
     FSL_IMX6UL_WDOG2_ADDR           = 0x020C0000,
@@ -241,10 +251,10 @@ enum FslIMX6ULIRQs {
     FSL_IMX6UL_UART7_IRQ    = 39,
     FSL_IMX6UL_UART8_IRQ    = 40,
 
-    FSL_IMX6UL_USB1_IRQ     = 42,
-    FSL_IMX6UL_USB2_IRQ     = 43,
+    FSL_IMX6UL_USB1_IRQ     = 43,
+    FSL_IMX6UL_USB2_IRQ     = 42,
     FSL_IMX6UL_USB_PHY1_IRQ = 44,
-    FSL_IMX6UL_USB_PHY2_IRQ = 44,
+    FSL_IMX6UL_USB_PHY2_IRQ = 45,
 
     FSL_IMX6UL_CAAM_JQ2_IRQ = 46,
     FSL_IMX6UL_CAAM_ERR_IRQ = 47,
diff --git a/include/hw/arm/smmu-common.h b/include/hw/arm/smmu-common.h
index 1f37844e5c..ca4a4b1ad1 100644
--- a/include/hw/arm/smmu-common.h
+++ b/include/hw/arm/smmu-common.h
@@ -85,7 +85,7 @@ typedef struct SMMUDevice {
 
 typedef struct SMMUPciBus {
     PCIBus       *bus;
-    SMMUDevice   *pbdev[0]; /* Parent array is sparse, so dynamically alloc */
+    SMMUDevice   *pbdev[]; /* Parent array is sparse, so dynamically alloc */
 } SMMUPciBus;
 
 typedef struct SMMUIOTLBKey {
diff --git a/include/hw/boards.h b/include/hw/boards.h
index 9bc42dfb22..c96120d15f 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -71,7 +71,7 @@ typedef struct CPUArchId {
  */
 typedef struct {
     int len;
-    CPUArchId cpus[0];
+    CPUArchId cpus[];
 } CPUArchIdList;
 
 /**
diff --git a/include/hw/i386/intel_iommu.h b/include/hw/i386/intel_iommu.h
index a1c4afcda5..3870052f5f 100644
--- a/include/hw/i386/intel_iommu.h
+++ b/include/hw/i386/intel_iommu.h
@@ -114,7 +114,8 @@ struct VTDAddressSpace {
 
 struct VTDBus {
     PCIBus* bus;		/* A reference to the bus to provide translation for */
-    VTDAddressSpace *dev_as[0];	/* A table of VTDAddressSpace objects indexed by devfn */
+    /* A table of VTDAddressSpace objects indexed by devfn */
+    VTDAddressSpace *dev_as[];
 };
 
 struct VTDIOTLBEntry {
diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h
index 09110961a5..42d64a0368 100644
--- a/include/hw/ppc/spapr.h
+++ b/include/hw/ppc/spapr.h
@@ -79,10 +79,10 @@ typedef enum {
 #define SPAPR_CAP_LARGE_DECREMENTER     0x08
 /* Count Cache Flush Assist HW Instruction */
 #define SPAPR_CAP_CCF_ASSIST            0x09
-/* FWNMI machine check handling */
-#define SPAPR_CAP_FWNMI_MCE             0x0A
+/* Implements PAPR FWNMI option */
+#define SPAPR_CAP_FWNMI                 0x0A
 /* Num Caps */
-#define SPAPR_CAP_NUM                   (SPAPR_CAP_FWNMI_MCE + 1)
+#define SPAPR_CAP_NUM                   (SPAPR_CAP_FWNMI + 1)
 
 /*
  * Capability Values
@@ -126,6 +126,7 @@ struct SpaprMachineClass {
     bool pre_4_1_migration; /* don't migrate hpt-max-page-size */
     bool linux_pci_probe;
     bool smp_threads_vsmt; /* set VSMT to smp_threads by default */
+    hwaddr rma_limit;          /* clamp the RMA to this size */
 
     void (*phb_placement)(SpaprMachineState *spapr, uint32_t index,
                           uint64_t *buid, hwaddr *pio, 
@@ -156,7 +157,6 @@ struct SpaprMachineState {
     SpaprPendingHpt *pending_hpt; /* in-progress resize */
 
     hwaddr rma_size;
-    int vrma_adjust;
     uint32_t fdt_size;
     uint32_t fdt_initial_size;
     void *fdt_blob;
@@ -192,14 +192,22 @@ struct SpaprMachineState {
      * occurs during the unplug process. */
     QTAILQ_HEAD(, SpaprDimmState) pending_dimm_unplugs;
 
-    /* State related to "ibm,nmi-register" and "ibm,nmi-interlock" calls */
-    target_ulong guest_machine_check_addr;
-    /*
-     * mc_status is set to -1 if mc is not in progress, else is set to the CPU
-     * handling the mc.
+    /* State related to FWNMI option */
+
+    /* System Reset and Machine Check Notification Routine addresses
+     * registered by "ibm,nmi-register" RTAS call.
+     */
+    target_ulong fwnmi_system_reset_addr;
+    target_ulong fwnmi_machine_check_addr;
+
+    /* Machine Check FWNMI synchronization, fwnmi_machine_check_interlock is
+     * set to -1 if a FWNMI machine check is not in progress, else is set to
+     * the CPU that was delivered the machine check, and is set back to -1
+     * when that CPU makes an "ibm,nmi-interlock" RTAS call. The cond is used
+     * to synchronize other CPUs.
      */
-    int mc_status;
-    QemuCond mc_delivery_cond;
+    int fwnmi_machine_check_interlock;
+    QemuCond fwnmi_machine_check_interlock_cond;
 
     /*< public >*/
     char *kvm_type;
@@ -736,6 +744,7 @@ void spapr_load_rtas(SpaprMachineState *spapr, void *fdt, hwaddr addr);
 #define SPAPR_IS_PCI_LIOBN(liobn)   (!!((liobn) & 0x80000000))
 #define SPAPR_PCI_DMA_WINDOW_NUM(liobn) ((liobn) & 0xff)
 
+#define RTAS_SIZE               2048
 #define RTAS_ERROR_LOG_MAX      2048
 
 /* Offset from rtas-base where error log is placed */
@@ -795,7 +804,7 @@ void *spapr_build_fdt(SpaprMachineState *spapr, bool reset, size_t space);
 void spapr_events_init(SpaprMachineState *sm);
 void spapr_dt_events(SpaprMachineState *sm, void *fdt);
 void close_htab_fd(SpaprMachineState *spapr);
-void spapr_setup_hpt_and_vrma(SpaprMachineState *spapr);
+void spapr_setup_hpt(SpaprMachineState *spapr);
 void spapr_free_hpt(SpaprMachineState *spapr);
 SpaprTceTable *spapr_tce_new_table(DeviceState *owner, uint32_t liobn);
 void spapr_tce_table_enable(SpaprTceTable *tcet,
@@ -824,6 +833,7 @@ int spapr_hpt_shift_for_ramsize(uint64_t ramsize);
 void spapr_reallocate_hpt(SpaprMachineState *spapr, int shift,
                           Error **errp);
 void spapr_clear_pending_events(SpaprMachineState *spapr);
+void spapr_clear_pending_hotplug_events(SpaprMachineState *spapr);
 int spapr_max_server_number(SpaprMachineState *spapr);
 void spapr_store_hpte(PowerPCCPU *cpu, hwaddr ptex,
                       uint64_t pte0, uint64_t pte1);
diff --git a/include/hw/ppc/spapr_cpu_core.h b/include/hw/ppc/spapr_cpu_core.h
index 1c4cc6559c..7aed8f555b 100644
--- a/include/hw/ppc/spapr_cpu_core.h
+++ b/include/hw/ppc/spapr_cpu_core.h
@@ -40,7 +40,9 @@ typedef struct SpaprCpuCoreClass {
 } SpaprCpuCoreClass;
 
 const char *spapr_get_cpu_core_type(const char *cpu_type);
-void spapr_cpu_set_entry_state(PowerPCCPU *cpu, target_ulong nip, target_ulong r3);
+void spapr_cpu_set_entry_state(PowerPCCPU *cpu, target_ulong nip,
+                               target_ulong r1, target_ulong r3,
+                               target_ulong r4);
 
 typedef struct SpaprCpuState {
     uint64_t vpa_addr;
diff --git a/include/hw/ppc/spapr_ovec.h b/include/hw/ppc/spapr_ovec.h
index 2bed517a2b..d4dee9e06a 100644
--- a/include/hw/ppc/spapr_ovec.h
+++ b/include/hw/ppc/spapr_ovec.h
@@ -72,8 +72,8 @@ void spapr_ovec_set(SpaprOptionVector *ov, long bitnr);
 void spapr_ovec_clear(SpaprOptionVector *ov, long bitnr);
 bool spapr_ovec_test(SpaprOptionVector *ov, long bitnr);
 SpaprOptionVector *spapr_ovec_parse_vector(target_ulong table_addr, int vector);
-int spapr_ovec_populate_dt(void *fdt, int fdt_offset,
-                           SpaprOptionVector *ov, const char *name);
+int spapr_dt_ovec(void *fdt, int fdt_offset,
+                  SpaprOptionVector *ov, const char *name);
 
 /* migration */
 extern const VMStateDescription vmstate_spapr_ovec;
diff --git a/include/hw/s390x/event-facility.h b/include/hw/s390x/event-facility.h
index bdc32a3c09..700a610f33 100644
--- a/include/hw/s390x/event-facility.h
+++ b/include/hw/s390x/event-facility.h
@@ -122,7 +122,7 @@ typedef struct MDBO {
 
 typedef struct MDB {
     MdbHeader header;
-    MDBO mdbo[0];
+    MDBO mdbo[];
 } QEMU_PACKED MDB;
 
 typedef struct SclpMsg {
diff --git a/include/hw/s390x/sclp.h b/include/hw/s390x/sclp.h
index c54413b78c..cd7b24359f 100644
--- a/include/hw/s390x/sclp.h
+++ b/include/hw/s390x/sclp.h
@@ -132,7 +132,7 @@ typedef struct ReadInfo {
     uint16_t highest_cpu;
     uint8_t  _reserved5[124 - 122];     /* 122-123 */
     uint32_t hmfai;
-    struct CPUEntry entries[0];
+    struct CPUEntry entries[];
 } QEMU_PACKED ReadInfo;
 
 typedef struct ReadCpuInfo {
@@ -142,7 +142,7 @@ typedef struct ReadCpuInfo {
     uint16_t nr_standby;            /* 12-13 */
     uint16_t offset_standby;        /* 14-15 */
     uint8_t reserved0[24-16];       /* 16-23 */
-    struct CPUEntry entries[0];
+    struct CPUEntry entries[];
 } QEMU_PACKED ReadCpuInfo;
 
 typedef struct ReadStorageElementInfo {
@@ -151,7 +151,7 @@ typedef struct ReadStorageElementInfo {
     uint16_t assigned;
     uint16_t standby;
     uint8_t _reserved0[16 - 14]; /* 14-15 */
-    uint32_t entries[0];
+    uint32_t entries[];
 } QEMU_PACKED ReadStorageElementInfo;
 
 typedef struct AttachStorageElement {
@@ -159,7 +159,7 @@ typedef struct AttachStorageElement {
     uint8_t _reserved0[10 - 8];  /* 8-9 */
     uint16_t assigned;
     uint8_t _reserved1[16 - 12]; /* 12-15 */
-    uint32_t entries[0];
+    uint32_t entries[];
 } QEMU_PACKED AttachStorageElement;
 
 typedef struct AssignStorage {
diff --git a/include/hw/usb/imx-usb-phy.h b/include/hw/usb/imx-usb-phy.h
new file mode 100644
index 0000000000..07f0235d10
--- /dev/null
+++ b/include/hw/usb/imx-usb-phy.h
@@ -0,0 +1,53 @@
+#ifndef IMX_USB_PHY_H
+#define IMX_USB_PHY_H
+
+#include "hw/sysbus.h"
+#include "qemu/bitops.h"
+
+enum IMXUsbPhyRegisters {
+    USBPHY_PWD,
+    USBPHY_PWD_SET,
+    USBPHY_PWD_CLR,
+    USBPHY_PWD_TOG,
+    USBPHY_TX,
+    USBPHY_TX_SET,
+    USBPHY_TX_CLR,
+    USBPHY_TX_TOG,
+    USBPHY_RX,
+    USBPHY_RX_SET,
+    USBPHY_RX_CLR,
+    USBPHY_RX_TOG,
+    USBPHY_CTRL,
+    USBPHY_CTRL_SET,
+    USBPHY_CTRL_CLR,
+    USBPHY_CTRL_TOG,
+    USBPHY_STATUS,
+    USBPHY_DEBUG = 0x14,
+    USBPHY_DEBUG_SET,
+    USBPHY_DEBUG_CLR,
+    USBPHY_DEBUG_TOG,
+    USBPHY_DEBUG0_STATUS,
+    USBPHY_DEBUG1 = 0x1c,
+    USBPHY_DEBUG1_SET,
+    USBPHY_DEBUG1_CLR,
+    USBPHY_DEBUG1_TOG,
+    USBPHY_VERSION,
+    USBPHY_MAX
+};
+
+#define USBPHY_CTRL_SFTRST BIT(31)
+
+#define TYPE_IMX_USBPHY "imx.usbphy"
+#define IMX_USBPHY(obj) OBJECT_CHECK(IMXUSBPHYState, (obj), TYPE_IMX_USBPHY)
+
+typedef struct IMXUSBPHYState {
+    /* <private> */
+    SysBusDevice parent_obj;
+
+    /* <public> */
+    MemoryRegion iomem;
+
+    uint32_t usbphy[USBPHY_MAX];
+} IMXUSBPHYState;
+
+#endif /* IMX_USB_PHY_H */
diff --git a/include/hw/virtio/virtio-iommu.h b/include/hw/virtio/virtio-iommu.h
index 6f67f1020a..e653004d7c 100644
--- a/include/hw/virtio/virtio-iommu.h
+++ b/include/hw/virtio/virtio-iommu.h
@@ -41,7 +41,7 @@ typedef struct IOMMUDevice {
 
 typedef struct IOMMUPciBus {
     PCIBus       *bus;
-    IOMMUDevice  *pbdev[0]; /* Parent array is sparse, so dynamically alloc */
+    IOMMUDevice  *pbdev[]; /* Parent array is sparse, so dynamically alloc */
 } IOMMUPciBus;
 
 typedef struct VirtIOIOMMU {
diff --git a/include/qemu/cpuid.h b/include/qemu/cpuid.h
index 69301700bd..09fc245b91 100644
--- a/include/qemu/cpuid.h
+++ b/include/qemu/cpuid.h
@@ -45,6 +45,9 @@
 #ifndef bit_AVX2
 #define bit_AVX2        (1 << 5)
 #endif
+#ifndef bit_AVX512F
+#define bit_AVX512F        (1 << 16)
+#endif
 #ifndef bit_BMI2
 #define bit_BMI2        (1 << 8)
 #endif
diff --git a/include/qemu/lockable.h b/include/qemu/lockable.h
index 84ea794bcf..1aeb2cb1a6 100644
--- a/include/qemu/lockable.h
+++ b/include/qemu/lockable.h
@@ -50,6 +50,7 @@ qemu_make_lockable(void *x, QemuLockable *lockable)
 #define QEMU_LOCK_FUNC(x) ((QemuLockUnlockFunc *)    \
     QEMU_GENERIC(x,                                  \
                  (QemuMutex *, qemu_mutex_lock),     \
+                 (QemuRecMutex *, qemu_rec_mutex_lock), \
                  (CoMutex *, qemu_co_mutex_lock),    \
                  (QemuSpin *, qemu_spin_lock),       \
                  unknown_lock_type))
@@ -57,6 +58,7 @@ qemu_make_lockable(void *x, QemuLockable *lockable)
 #define QEMU_UNLOCK_FUNC(x) ((QemuLockUnlockFunc *)  \
     QEMU_GENERIC(x,                                  \
                  (QemuMutex *, qemu_mutex_unlock),   \
+                 (QemuRecMutex *, qemu_rec_mutex_unlock), \
                  (CoMutex *, qemu_co_mutex_unlock),  \
                  (QemuSpin *, qemu_spin_unlock),     \
                  unknown_lock_type))
@@ -65,7 +67,7 @@ qemu_make_lockable(void *x, QemuLockable *lockable)
  * In C++ it would be different, but then C++ wouldn't need QemuLockable
  * either...
  */
-#define QEMU_MAKE_LOCKABLE_(x) qemu_make_lockable((x), &(QemuLockable) {    \
+#define QEMU_MAKE_LOCKABLE_(x) (&(QemuLockable) {     \
         .object = (x),                               \
         .lock = QEMU_LOCK_FUNC(x),                   \
         .unlock = QEMU_UNLOCK_FUNC(x),               \
@@ -73,14 +75,27 @@ qemu_make_lockable(void *x, QemuLockable *lockable)
 
 /* QEMU_MAKE_LOCKABLE - Make a polymorphic QemuLockable
  *
- * @x: a lock object (currently one of QemuMutex, CoMutex, QemuSpin).
+ * @x: a lock object (currently one of QemuMutex, QemuRecMutex, CoMutex, QemuSpin).
  *
  * Returns a QemuLockable object that can be passed around
- * to a function that can operate with locks of any kind.
+ * to a function that can operate with locks of any kind, or
+ * NULL if @x is %NULL.
  */
 #define QEMU_MAKE_LOCKABLE(x)                        \
     QEMU_GENERIC(x,                                  \
                  (QemuLockable *, (x)),              \
+                 qemu_make_lockable((x), QEMU_MAKE_LOCKABLE_(x)))
+
+/* QEMU_MAKE_LOCKABLE_NONNULL - Make a polymorphic QemuLockable
+ *
+ * @x: a lock object (currently one of QemuMutex, QemuRecMutex, CoMutex, QemuSpin).
+ *
+ * Returns a QemuLockable object that can be passed around
+ * to a function that can operate with locks of any kind.
+ */
+#define QEMU_MAKE_LOCKABLE_NONNULL(x)                \
+    QEMU_GENERIC(x,                                  \
+                 (QemuLockable *, (x)),              \
                  QEMU_MAKE_LOCKABLE_(x))
 
 static inline void qemu_lockable_lock(QemuLockable *x)
@@ -93,4 +108,69 @@ static inline void qemu_lockable_unlock(QemuLockable *x)
     x->unlock(x->object);
 }
 
+static inline QemuLockable *qemu_lockable_auto_lock(QemuLockable *x)
+{
+    qemu_lockable_lock(x);
+    return x;
+}
+
+static inline void qemu_lockable_auto_unlock(QemuLockable *x)
+{
+    if (x) {
+        qemu_lockable_unlock(x);
+    }
+}
+
+G_DEFINE_AUTOPTR_CLEANUP_FUNC(QemuLockable, qemu_lockable_auto_unlock)
+
+#define WITH_QEMU_LOCK_GUARD_(x, var) \
+    for (g_autoptr(QemuLockable) var = \
+                qemu_lockable_auto_lock(QEMU_MAKE_LOCKABLE_NONNULL((x))); \
+         var; \
+         qemu_lockable_auto_unlock(var), var = NULL)
+
+/**
+ * WITH_QEMU_LOCK_GUARD - Lock a lock object for scope
+ *
+ * @x: a lock object (currently one of QemuMutex, CoMutex, QemuSpin).
+ *
+ * This macro defines a lock scope such that entering the scope takes the lock
+ * and leaving the scope releases the lock.  Return statements are allowed
+ * within the scope and release the lock.  Break and continue statements leave
+ * the scope early and release the lock.
+ *
+ *   WITH_QEMU_LOCK_GUARD(&mutex) {
+ *       ...
+ *       if (error) {
+ *           return; <-- mutex is automatically unlocked
+ *       }
+ *
+ *       if (early_exit) {
+ *           break;  <-- leave this scope early
+ *       }
+ *       ...
+ *   }
+ */
+#define WITH_QEMU_LOCK_GUARD(x) \
+    WITH_QEMU_LOCK_GUARD_((x), qemu_lockable_auto##__COUNTER__)
+
+/**
+ * QEMU_LOCK_GUARD - Lock an object until the end of the scope
+ *
+ * @x: a lock object (currently one of QemuMutex, CoMutex, QemuSpin).
+ *
+ * This macro takes a lock until the end of the scope.  Return statements
+ * release the lock.
+ *
+ *   ... <-- mutex not locked
+ *   QEMU_LOCK_GUARD(&mutex); <-- mutex locked from here onwards
+ *   ...
+ *   if (error) {
+ *       return; <-- mutex is automatically unlocked
+ *   }
+ */
+#define QEMU_LOCK_GUARD(x) \
+    g_autoptr(QemuLockable) qemu_lockable_auto##__COUNTER__ = \
+            qemu_lockable_auto_lock(QEMU_MAKE_LOCKABLE((x)))
+
 #endif
diff --git a/include/qom/object.h b/include/qom/object.h
index 29546496c1..784c97c0e1 100644
--- a/include/qom/object.h
+++ b/include/qom/object.h
@@ -1664,69 +1664,101 @@ ObjectProperty *object_class_property_add_tm(ObjectClass *klass,
                                   void (*get)(Object *, struct tm *, Error **),
                                   Error **errp);
 
+typedef enum {
+    /* Automatically add a getter to the property */
+    OBJ_PROP_FLAG_READ = 1 << 0,
+    /* Automatically add a setter to the property */
+    OBJ_PROP_FLAG_WRITE = 1 << 1,
+    /* Automatically add a getter and a setter to the property */
+    OBJ_PROP_FLAG_READWRITE = (OBJ_PROP_FLAG_READ | OBJ_PROP_FLAG_WRITE),
+} ObjectPropertyFlags;
+
 /**
  * object_property_add_uint8_ptr:
  * @obj: the object to add a property to
  * @name: the name of the property
  * @v: pointer to value
+ * @flags: bitwise-or'd ObjectPropertyFlags
  * @errp: if an error occurs, a pointer to an area to store the error
  *
  * Add an integer property in memory.  This function will add a
  * property of type 'uint8'.
  */
 void object_property_add_uint8_ptr(Object *obj, const char *name,
-                                   const uint8_t *v, Error **errp);
+                                   const uint8_t *v, ObjectPropertyFlags flags,
+                                   Error **errp);
+
 ObjectProperty *object_class_property_add_uint8_ptr(ObjectClass *klass,
                                          const char *name,
-                                         const uint8_t *v, Error **errp);
+                                         const uint8_t *v,
+                                         ObjectPropertyFlags flags,
+                                         Error **errp);
 
 /**
  * object_property_add_uint16_ptr:
  * @obj: the object to add a property to
  * @name: the name of the property
  * @v: pointer to value
+ * @flags: bitwise-or'd ObjectPropertyFlags
  * @errp: if an error occurs, a pointer to an area to store the error
  *
  * Add an integer property in memory.  This function will add a
  * property of type 'uint16'.
  */
 void object_property_add_uint16_ptr(Object *obj, const char *name,
-                                    const uint16_t *v, Error **errp);
+                                    const uint16_t *v,
+                                    ObjectPropertyFlags flags,
+                                    Error **errp);
+
 ObjectProperty *object_class_property_add_uint16_ptr(ObjectClass *klass,
                                           const char *name,
-                                          const uint16_t *v, Error **errp);
+                                          const uint16_t *v,
+                                          ObjectPropertyFlags flags,
+                                          Error **errp);
 
 /**
  * object_property_add_uint32_ptr:
  * @obj: the object to add a property to
  * @name: the name of the property
  * @v: pointer to value
+ * @flags: bitwise-or'd ObjectPropertyFlags
  * @errp: if an error occurs, a pointer to an area to store the error
  *
  * Add an integer property in memory.  This function will add a
  * property of type 'uint32'.
  */
 void object_property_add_uint32_ptr(Object *obj, const char *name,
-                                    const uint32_t *v, Error **errp);
+                                    const uint32_t *v,
+                                    ObjectPropertyFlags flags,
+                                    Error **errp);
+
 ObjectProperty *object_class_property_add_uint32_ptr(ObjectClass *klass,
                                           const char *name,
-                                          const uint32_t *v, Error **errp);
+                                          const uint32_t *v,
+                                          ObjectPropertyFlags flags,
+                                          Error **errp);
 
 /**
  * object_property_add_uint64_ptr:
  * @obj: the object to add a property to
  * @name: the name of the property
  * @v: pointer to value
+ * @flags: bitwise-or'd ObjectPropertyFlags
  * @errp: if an error occurs, a pointer to an area to store the error
  *
  * Add an integer property in memory.  This function will add a
  * property of type 'uint64'.
  */
 void object_property_add_uint64_ptr(Object *obj, const char *name,
-                                    const uint64_t *v, Error **errp);
+                                    const uint64_t *v,
+                                    ObjectPropertyFlags flags,
+                                    Error **Errp);
+
 ObjectProperty *object_class_property_add_uint64_ptr(ObjectClass *klass,
                                           const char *name,
-                                          const uint64_t *v, Error **errp);
+                                          const uint64_t *v,
+                                          ObjectPropertyFlags flags,
+                                          Error **Errp);
 
 /**
  * object_property_add_alias:
diff --git a/include/sysemu/cryptodev.h b/include/sysemu/cryptodev.h
index a9afb7e5b5..35eab06d0e 100644
--- a/include/sysemu/cryptodev.h
+++ b/include/sysemu/cryptodev.h
@@ -143,7 +143,7 @@ typedef struct CryptoDevBackendSymOpInfo {
     uint8_t *dst;
     uint8_t *aad_data;
     uint8_t *digest_result;
-    uint8_t data[0];
+    uint8_t data[];
 } CryptoDevBackendSymOpInfo;
 
 typedef struct CryptoDevBackendClass {
diff --git a/include/sysemu/whpx.h b/include/sysemu/whpx.h
index 4794e8effe..a84b49e749 100644
--- a/include/sysemu/whpx.h
+++ b/include/sysemu/whpx.h
@@ -35,4 +35,11 @@ int whpx_enabled(void);
 
 #endif /* CONFIG_WHPX */
 
+/* state subset only touched by the VCPU itself during runtime */
+#define WHPX_SET_RUNTIME_STATE   1
+/* state subset modified during VCPU reset */
+#define WHPX_SET_RESET_STATE     2
+/* full state set, modified during initialization or on vmload */
+#define WHPX_SET_FULL_STATE      3
+
 #endif /* QEMU_WHPX_H */
diff --git a/include/tcg/tcg.h b/include/tcg/tcg.h
index 54e5446880..c48bd76b0a 100644
--- a/include/tcg/tcg.h
+++ b/include/tcg/tcg.h
@@ -267,7 +267,7 @@ struct TCGLabel {
 typedef struct TCGPool {
     struct TCGPool *next;
     int size;
-    uint8_t data[0] __attribute__ ((aligned));
+    uint8_t data[] __attribute__ ((aligned));
 } TCGPool;
 
 #define TCG_POOL_CHUNK_SIZE 32768
diff --git a/memory.c b/memory.c
index 09be40edd2..601b749906 100644
--- a/memory.c
+++ b/memory.c
@@ -1170,15 +1170,6 @@ void memory_region_init(MemoryRegion *mr,
     memory_region_do_init(mr, owner, name, size);
 }
 
-static void memory_region_get_addr(Object *obj, Visitor *v, const char *name,
-                                   void *opaque, Error **errp)
-{
-    MemoryRegion *mr = MEMORY_REGION(obj);
-    uint64_t value = mr->addr;
-
-    visit_type_uint64(v, name, &value, errp);
-}
-
 static void memory_region_get_container(Object *obj, Visitor *v,
                                         const char *name, void *opaque,
                                         Error **errp)
@@ -1242,10 +1233,8 @@ static void memory_region_initfn(Object *obj)
                              NULL, NULL, &error_abort);
     op->resolve = memory_region_resolve_container;
 
-    object_property_add(OBJECT(mr), "addr", "uint64",
-                        memory_region_get_addr,
-                        NULL, /* memory_region_set_addr */
-                        NULL, NULL, &error_abort);
+    object_property_add_uint64_ptr(OBJECT(mr), "addr",
+                                   &mr->addr, OBJ_PROP_FLAG_READ, &error_abort);
     object_property_add(OBJECT(mr), "priority", "uint32",
                         memory_region_get_priority,
                         NULL, /* memory_region_set_priority */
@@ -1671,19 +1660,8 @@ void memory_region_init_rom_nomigrate(MemoryRegion *mr,
                                       uint64_t size,
                                       Error **errp)
 {
-    Error *err = NULL;
-    memory_region_init(mr, owner, name, size);
-    mr->ram = true;
+    memory_region_init_ram_shared_nomigrate(mr, owner, name, size, false, errp);
     mr->readonly = true;
-    mr->terminates = true;
-    mr->destructor = memory_region_destructor_ram;
-    mr->ram_block = qemu_ram_alloc(size, false, mr, &err);
-    mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
-    if (err) {
-        mr->size = int128_zero();
-        object_unparent(OBJECT(mr));
-        error_propagate(errp, err);
-    }
 }
 
 void memory_region_init_rom_device_nomigrate(MemoryRegion *mr,
@@ -2830,6 +2808,9 @@ void address_space_destroy(AddressSpace *as)
 
 static const char *memory_region_type(MemoryRegion *mr)
 {
+    if (mr->alias) {
+        return memory_region_type(mr->alias);
+    }
     if (memory_region_is_ram_device(mr)) {
         return "ramd";
     } else if (memory_region_is_romd(mr)) {
diff --git a/net/queue.c b/net/queue.c
index 61276ca4be..0164727e39 100644
--- a/net/queue.c
+++ b/net/queue.c
@@ -46,7 +46,7 @@ struct NetPacket {
     unsigned flags;
     int size;
     NetPacketSent *sent_cb;
-    uint8_t data[0];
+    uint8_t data[];
 };
 
 struct NetQueue {
diff --git a/pc-bios/README b/pc-bios/README
index d6d33d237f..f54c2743d0 100644
--- a/pc-bios/README
+++ b/pc-bios/README
@@ -14,7 +14,7 @@
 - SLOF (Slimline Open Firmware) is a free IEEE 1275 Open Firmware
   implementation for certain IBM POWER hardware.  The sources are at
   https://github.com/aik/SLOF, and the image currently in qemu is
-  built from git tag qemu-slof-20191217.
+  built from git tag qemu-slof-20200317.
 
 - sgabios (the Serial Graphics Adapter option ROM) provides a means for
   legacy x86 software to communicate with an attached serial console as
diff --git a/pc-bios/optionrom/pvh_main.c b/pc-bios/optionrom/pvh_main.c
index a015e1bf22..28e79d7fc4 100644
--- a/pc-bios/optionrom/pvh_main.c
+++ b/pc-bios/optionrom/pvh_main.c
@@ -29,7 +29,7 @@ asm (".code32"); /* this code will be executed in protected mode */
 
 #define RSDP_SIGNATURE          0x2052545020445352LL /* "RSD PTR " */
 #define RSDP_AREA_ADDR          0x000E0000
-#define RSDP_AREA_SIZE          2048
+#define RSDP_AREA_SIZE          0x00020000
 #define EBDA_BASE_ADDR          0x0000040E
 #define EBDA_SIZE               1024
 
diff --git a/pc-bios/s390-ccw/bootmap.h b/pc-bios/s390-ccw/bootmap.h
index 94f53a5f1e..12a0166aae 100644
--- a/pc-bios/s390-ccw/bootmap.h
+++ b/pc-bios/s390-ccw/bootmap.h
@@ -136,7 +136,7 @@ typedef struct BootMapScriptHeader {
 
 typedef struct BootMapScript {
     BootMapScriptHeader header;
-    BootMapScriptEntry  entry[0];
+    BootMapScriptEntry  entry[];
 } __attribute__ ((packed)) BootMapScript;
 
 /*
diff --git a/pc-bios/s390-ccw/sclp.h b/pc-bios/s390-ccw/sclp.h
index 8450161ba7..64b53cad29 100644
--- a/pc-bios/s390-ccw/sclp.h
+++ b/pc-bios/s390-ccw/sclp.h
@@ -95,7 +95,7 @@ typedef struct EventBufferHeader {
 typedef struct WriteEventData {
     SCCBHeader h;
     EventBufferHeader ebh;
-    char data[0];
+    char data[];
 } __attribute__((packed)) WriteEventData;
 
 typedef struct ReadEventData {
diff --git a/pc-bios/slof.bin b/pc-bios/slof.bin
index 78d8b26cbb..40499a1451 100644
--- a/pc-bios/slof.bin
+++ b/pc-bios/slof.bin
Binary files differdiff --git a/plugins/core.c b/plugins/core.c
index ed863011ba..51bfc94787 100644
--- a/plugins/core.c
+++ b/plugins/core.c
@@ -15,6 +15,7 @@
 #include "qemu/error-report.h"
 #include "qemu/config-file.h"
 #include "qapi/error.h"
+#include "qemu/lockable.h"
 #include "qemu/option.h"
 #include "qemu/rcu_queue.h"
 #include "qemu/xxhash.h"
@@ -150,11 +151,11 @@ do_plugin_register_cb(qemu_plugin_id_t id, enum qemu_plugin_event ev,
 {
     struct qemu_plugin_ctx *ctx;
 
-    qemu_rec_mutex_lock(&plugin.lock);
+    QEMU_LOCK_GUARD(&plugin.lock);
     ctx = plugin_id_to_ctx_locked(id);
     /* if the plugin is on its way out, ignore this request */
     if (unlikely(ctx->uninstalling)) {
-        goto out_unlock;
+        return;
     }
     if (func) {
         struct qemu_plugin_cb *cb = ctx->callbacks[ev];
@@ -178,8 +179,6 @@ do_plugin_register_cb(qemu_plugin_id_t id, enum qemu_plugin_event ev,
     } else {
         plugin_unregister_cb__locked(ctx, ev);
     }
- out_unlock:
-    qemu_rec_mutex_unlock(&plugin.lock);
 }
 
 void plugin_register_cb(qemu_plugin_id_t id, enum qemu_plugin_event ev,
diff --git a/plugins/loader.c b/plugins/loader.c
index 15fc7e5515..685d334e1a 100644
--- a/plugins/loader.c
+++ b/plugins/loader.c
@@ -19,6 +19,7 @@
 #include "qemu/error-report.h"
 #include "qemu/config-file.h"
 #include "qapi/error.h"
+#include "qemu/lockable.h"
 #include "qemu/option.h"
 #include "qemu/rcu_queue.h"
 #include "qemu/qht.h"
@@ -367,15 +368,14 @@ void plugin_reset_uninstall(qemu_plugin_id_t id,
     struct qemu_plugin_reset_data *data;
     struct qemu_plugin_ctx *ctx;
 
-    qemu_rec_mutex_lock(&plugin.lock);
-    ctx = plugin_id_to_ctx_locked(id);
-    if (ctx->uninstalling || (reset && ctx->resetting)) {
-        qemu_rec_mutex_unlock(&plugin.lock);
-        return;
+    WITH_QEMU_LOCK_GUARD(&plugin.lock) {
+        ctx = plugin_id_to_ctx_locked(id);
+        if (ctx->uninstalling || (reset && ctx->resetting)) {
+            return;
+        }
+        ctx->resetting = reset;
+        ctx->uninstalling = !reset;
     }
-    ctx->resetting = reset;
-    ctx->uninstalling = !reset;
-    qemu_rec_mutex_unlock(&plugin.lock);
 
     data = g_new(struct qemu_plugin_reset_data, 1);
     data->ctx = ctx;
diff --git a/qom/object.c b/qom/object.c
index 555c8b9d07..1812f79224 100644
--- a/qom/object.c
+++ b/qom/object.c
@@ -2498,6 +2498,22 @@ static void property_get_uint8_ptr(Object *obj, Visitor *v, const char *name,
     visit_type_uint8(v, name, &value, errp);
 }
 
+static void property_set_uint8_ptr(Object *obj, Visitor *v, const char *name,
+                                   void *opaque, Error **errp)
+{
+    uint8_t *field = opaque;
+    uint8_t value;
+    Error *local_err = NULL;
+
+    visit_type_uint8(v, name, &value, &local_err);
+    if (local_err) {
+        error_propagate(errp, local_err);
+        return;
+    }
+
+    *field = value;
+}
+
 static void property_get_uint16_ptr(Object *obj, Visitor *v, const char *name,
                                     void *opaque, Error **errp)
 {
@@ -2505,6 +2521,22 @@ static void property_get_uint16_ptr(Object *obj, Visitor *v, const char *name,
     visit_type_uint16(v, name, &value, errp);
 }
 
+static void property_set_uint16_ptr(Object *obj, Visitor *v, const char *name,
+                                    void *opaque, Error **errp)
+{
+    uint16_t *field = opaque;
+    uint16_t value;
+    Error *local_err = NULL;
+
+    visit_type_uint16(v, name, &value, &local_err);
+    if (local_err) {
+        error_propagate(errp, local_err);
+        return;
+    }
+
+    *field = value;
+}
+
 static void property_get_uint32_ptr(Object *obj, Visitor *v, const char *name,
                                     void *opaque, Error **errp)
 {
@@ -2512,6 +2544,22 @@ static void property_get_uint32_ptr(Object *obj, Visitor *v, const char *name,
     visit_type_uint32(v, name, &value, errp);
 }
 
+static void property_set_uint32_ptr(Object *obj, Visitor *v, const char *name,
+                                    void *opaque, Error **errp)
+{
+    uint32_t *field = opaque;
+    uint32_t value;
+    Error *local_err = NULL;
+
+    visit_type_uint32(v, name, &value, &local_err);
+    if (local_err) {
+        error_propagate(errp, local_err);
+        return;
+    }
+
+    *field = value;
+}
+
 static void property_get_uint64_ptr(Object *obj, Visitor *v, const char *name,
                                     void *opaque, Error **errp)
 {
@@ -2519,68 +2567,184 @@ static void property_get_uint64_ptr(Object *obj, Visitor *v, const char *name,
     visit_type_uint64(v, name, &value, errp);
 }
 
+static void property_set_uint64_ptr(Object *obj, Visitor *v, const char *name,
+                                    void *opaque, Error **errp)
+{
+    uint64_t *field = opaque;
+    uint64_t value;
+    Error *local_err = NULL;
+
+    visit_type_uint64(v, name, &value, &local_err);
+    if (local_err) {
+        error_propagate(errp, local_err);
+        return;
+    }
+
+    *field = value;
+}
+
 void object_property_add_uint8_ptr(Object *obj, const char *name,
-                                   const uint8_t *v, Error **errp)
+                                   const uint8_t *v,
+                                   ObjectPropertyFlags flags,
+                                   Error **errp)
 {
-    object_property_add(obj, name, "uint8", property_get_uint8_ptr,
-                        NULL, NULL, (void *)v, errp);
+    ObjectPropertyAccessor *getter = NULL;
+    ObjectPropertyAccessor *setter = NULL;
+
+    if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
+        getter = property_get_uint8_ptr;
+    }
+
+    if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
+        setter = property_set_uint8_ptr;
+    }
+
+    object_property_add(obj, name, "uint8",
+                        getter, setter, NULL, (void *)v, errp);
 }
 
 ObjectProperty *
 object_class_property_add_uint8_ptr(ObjectClass *klass, const char *name,
-                                         const uint8_t *v, Error **errp)
+                                    const uint8_t *v,
+                                    ObjectPropertyFlags flags,
+                                    Error **errp)
 {
+    ObjectPropertyAccessor *getter = NULL;
+    ObjectPropertyAccessor *setter = NULL;
+
+    if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
+        getter = property_get_uint8_ptr;
+    }
+
+    if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
+        setter = property_set_uint8_ptr;
+    }
+
     return object_class_property_add(klass, name, "uint8",
-                                     property_get_uint8_ptr,
-                                     NULL, NULL, (void *)v, errp);
+                                     getter, setter, NULL, (void *)v, errp);
 }
 
 void object_property_add_uint16_ptr(Object *obj, const char *name,
-                                    const uint16_t *v, Error **errp)
+                                    const uint16_t *v,
+                                    ObjectPropertyFlags flags,
+                                    Error **errp)
 {
-    object_property_add(obj, name, "uint16", property_get_uint16_ptr,
-                        NULL, NULL, (void *)v, errp);
+    ObjectPropertyAccessor *getter = NULL;
+    ObjectPropertyAccessor *setter = NULL;
+
+    if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
+        getter = property_get_uint16_ptr;
+    }
+
+    if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
+        setter = property_set_uint16_ptr;
+    }
+
+    object_property_add(obj, name, "uint16",
+                        getter, setter, NULL, (void *)v, errp);
 }
 
 ObjectProperty *
 object_class_property_add_uint16_ptr(ObjectClass *klass, const char *name,
-                                          const uint16_t *v, Error **errp)
+                                     const uint16_t *v,
+                                     ObjectPropertyFlags flags,
+                                     Error **errp)
 {
+    ObjectPropertyAccessor *getter = NULL;
+    ObjectPropertyAccessor *setter = NULL;
+
+    if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
+        getter = property_get_uint16_ptr;
+    }
+
+    if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
+        setter = property_set_uint16_ptr;
+    }
+
     return object_class_property_add(klass, name, "uint16",
-                                     property_get_uint16_ptr,
-                                     NULL, NULL, (void *)v, errp);
+                                     getter, setter, NULL, (void *)v, errp);
 }
 
 void object_property_add_uint32_ptr(Object *obj, const char *name,
-                                    const uint32_t *v, Error **errp)
+                                    const uint32_t *v,
+                                    ObjectPropertyFlags flags,
+                                    Error **errp)
 {
-    object_property_add(obj, name, "uint32", property_get_uint32_ptr,
-                        NULL, NULL, (void *)v, errp);
+    ObjectPropertyAccessor *getter = NULL;
+    ObjectPropertyAccessor *setter = NULL;
+
+    if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
+        getter = property_get_uint32_ptr;
+    }
+
+    if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
+        setter = property_set_uint32_ptr;
+    }
+
+    object_property_add(obj, name, "uint32",
+                        getter, setter, NULL, (void *)v, errp);
 }
 
 ObjectProperty *
 object_class_property_add_uint32_ptr(ObjectClass *klass, const char *name,
-                                          const uint32_t *v, Error **errp)
+                                     const uint32_t *v,
+                                     ObjectPropertyFlags flags,
+                                     Error **errp)
 {
+    ObjectPropertyAccessor *getter = NULL;
+    ObjectPropertyAccessor *setter = NULL;
+
+    if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
+        getter = property_get_uint32_ptr;
+    }
+
+    if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
+        setter = property_set_uint32_ptr;
+    }
+
     return object_class_property_add(klass, name, "uint32",
-                                     property_get_uint32_ptr,
-                                     NULL, NULL, (void *)v, errp);
+                                     getter, setter, NULL, (void *)v, errp);
 }
 
 void object_property_add_uint64_ptr(Object *obj, const char *name,
-                                    const uint64_t *v, Error **errp)
+                                    const uint64_t *v,
+                                    ObjectPropertyFlags flags,
+                                    Error **errp)
 {
-    object_property_add(obj, name, "uint64", property_get_uint64_ptr,
-                        NULL, NULL, (void *)v, errp);
+    ObjectPropertyAccessor *getter = NULL;
+    ObjectPropertyAccessor *setter = NULL;
+
+    if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
+        getter = property_get_uint64_ptr;
+    }
+
+    if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
+        setter = property_set_uint64_ptr;
+    }
+
+    object_property_add(obj, name, "uint64",
+                        getter, setter, NULL, (void *)v, errp);
 }
 
 ObjectProperty *
 object_class_property_add_uint64_ptr(ObjectClass *klass, const char *name,
-                                          const uint64_t *v, Error **errp)
+                                     const uint64_t *v,
+                                     ObjectPropertyFlags flags,
+                                     Error **errp)
 {
+    ObjectPropertyAccessor *getter = NULL;
+    ObjectPropertyAccessor *setter = NULL;
+
+    if ((flags & OBJ_PROP_FLAG_READ) == OBJ_PROP_FLAG_READ) {
+        getter = property_get_uint64_ptr;
+    }
+
+    if ((flags & OBJ_PROP_FLAG_WRITE) == OBJ_PROP_FLAG_WRITE) {
+        setter = property_set_uint64_ptr;
+    }
+
     return object_class_property_add(klass, name, "uint64",
-                                     property_get_uint64_ptr,
-                                     NULL, NULL, (void *)v, errp);
+                                     getter, setter, NULL, (void *)v, errp);
 }
 
 typedef struct {
diff --git a/roms/SLOF b/roms/SLOF
-Subproject 9546892a80d5a4c73deea6719de46372f007f4a
+Subproject ab6984f5a6d054e1f634dda855b32e535711197
diff --git a/scripts/coccinelle/memory-region-housekeeping.cocci b/scripts/coccinelle/memory-region-housekeeping.cocci
new file mode 100644
index 0000000000..c768d8140a
--- /dev/null
+++ b/scripts/coccinelle/memory-region-housekeeping.cocci
@@ -0,0 +1,159 @@
+/*
+  Usage:
+
+    spatch \
+        --macro-file scripts/cocci-macro-file.h \
+        --sp-file scripts/coccinelle/memory-region-housekeeping.cocci \
+        --keep-comments \
+        --in-place \
+        --dir .
+
+*/
+
+
+// Replace memory_region_init_ram(readonly) by memory_region_init_rom()
+@@
+expression E1, E2, E3, E4, E5;
+symbol true;
+@@
+(
+- memory_region_init_ram(E1, E2, E3, E4, E5);
++ memory_region_init_rom(E1, E2, E3, E4, E5);
+  ... WHEN != E1
+- memory_region_set_readonly(E1, true);
+|
+- memory_region_init_ram_nomigrate(E1, E2, E3, E4, E5);
++ memory_region_init_rom_nomigrate(E1, E2, E3, E4, E5);
+  ... WHEN != E1
+- memory_region_set_readonly(E1, true);
+)
+
+
+@possible_memory_region_init_rom@
+expression E1, E2, E3, E4, E5;
+position p;
+@@
+(
+  memory_region_init_ram@p(E1, E2, E3, E4, E5);
+  ...
+  memory_region_set_readonly(E1, true);
+|
+  memory_region_init_ram_nomigrate@p(E1, E2, E3, E4, E5);
+  ...
+  memory_region_set_readonly(E1, true);
+)
+@script:python@
+p << possible_memory_region_init_rom.p;
+@@
+cocci.print_main("potential use of memory_region_init_rom*() in ", p)
+
+
+// Do not call memory_region_set_readonly() on ROM alias
+@@
+expression ROM, E1, E2, E3, E4;
+expression ALIAS, E5, E6, E7, E8;
+@@
+(
+  memory_region_init_rom(ROM, E1, E2, E3, E4);
+|
+  memory_region_init_rom_nomigrate(ROM, E1, E2, E3, E4);
+)
+  ...
+   memory_region_init_alias(ALIAS, E5, E6, ROM, E7, E8);
+-  memory_region_set_readonly(ALIAS, true);
+
+
+// Replace by-hand memory_region_init_ram_nomigrate/vmstate_register_ram
+// code sequences with use of the new memory_region_init_ram function.
+// Similarly for the _rom and _rom_device functions.
+// We don't try to replace sequences with a non-NULL owner, because
+// there are none in the tree that can be automatically converted
+// (and only a handful that can be manually converted).
+@@
+expression MR;
+expression NAME;
+expression SIZE;
+expression ERRP;
+@@
+-memory_region_init_ram_nomigrate(MR, NULL, NAME, SIZE, ERRP);
++memory_region_init_ram(MR, NULL, NAME, SIZE, ERRP);
+ ...
+-vmstate_register_ram_global(MR);
+@@
+expression MR;
+expression NAME;
+expression SIZE;
+expression ERRP;
+@@
+-memory_region_init_rom_nomigrate(MR, NULL, NAME, SIZE, ERRP);
++memory_region_init_rom(MR, NULL, NAME, SIZE, ERRP);
+ ...
+-vmstate_register_ram_global(MR);
+@@
+expression MR;
+expression OPS;
+expression OPAQUE;
+expression NAME;
+expression SIZE;
+expression ERRP;
+@@
+-memory_region_init_rom_device_nomigrate(MR, NULL, OPS, OPAQUE, NAME, SIZE, ERRP);
++memory_region_init_rom_device(MR, NULL, OPS, OPAQUE, NAME, SIZE, ERRP);
+ ...
+-vmstate_register_ram_global(MR);
+
+
+// Device is owner
+@@
+typedef DeviceState;
+identifier device_fn, dev, obj;
+expression E1, E2, E3, E4, E5;
+@@
+static void device_fn(DeviceState *dev, ...)
+{
+  ...
+  Object *obj = OBJECT(dev);
+  <+...
+(
+- memory_region_init(E1, NULL, E2, E3);
++ memory_region_init(E1, obj, E2, E3);
+|
+- memory_region_init_io(E1, NULL, E2, E3, E4, E5);
++ memory_region_init_io(E1, obj, E2, E3, E4, E5);
+|
+- memory_region_init_alias(E1, NULL, E2, E3, E4, E5);
++ memory_region_init_alias(E1, obj, E2, E3, E4, E5);
+|
+- memory_region_init_rom(E1, NULL, E2, E3, E4);
++ memory_region_init_rom(E1, obj, E2, E3, E4);
+|
+- memory_region_init_ram_shared_nomigrate(E1, NULL, E2, E3, E4, E5);
++ memory_region_init_ram_shared_nomigrate(E1, obj, E2, E3, E4, E5);
+)
+  ...+>
+}
+@@
+identifier device_fn, dev;
+expression E1, E2, E3, E4, E5;
+@@
+static void device_fn(DeviceState *dev, ...)
+{
+  <+...
+(
+- memory_region_init(E1, NULL, E2, E3);
++ memory_region_init(E1, OBJECT(dev), E2, E3);
+|
+- memory_region_init_io(E1, NULL, E2, E3, E4, E5);
++ memory_region_init_io(E1, OBJECT(dev), E2, E3, E4, E5);
+|
+- memory_region_init_alias(E1, NULL, E2, E3, E4, E5);
++ memory_region_init_alias(E1, OBJECT(dev), E2, E3, E4, E5);
+|
+- memory_region_init_rom(E1, NULL, E2, E3, E4);
++ memory_region_init_rom(E1, OBJECT(dev), E2, E3, E4);
+|
+- memory_region_init_ram_shared_nomigrate(E1, NULL, E2, E3, E4, E5);
++ memory_region_init_ram_shared_nomigrate(E1, OBJECT(dev), E2, E3, E4, E5);
+)
+  ...+>
+}
diff --git a/scripts/coccinelle/memory-region-init-ram.cocci b/scripts/coccinelle/memory-region-init-ram.cocci
deleted file mode 100644
index d290150872..0000000000
--- a/scripts/coccinelle/memory-region-init-ram.cocci
+++ /dev/null
@@ -1,38 +0,0 @@
-// Replace by-hand memory_region_init_ram_nomigrate/vmstate_register_ram
-// code sequences with use of the new memory_region_init_ram function.
-// Similarly for the _rom and _rom_device functions.
-// We don't try to replace sequences with a non-NULL owner, because
-// there are none in the tree that can be automatically converted
-// (and only a handful that can be manually converted).
-@@
-expression MR;
-expression NAME;
-expression SIZE;
-expression ERRP;
-@@
--memory_region_init_ram_nomigrate(MR, NULL, NAME, SIZE, ERRP);
-+memory_region_init_ram(MR, NULL, NAME, SIZE, ERRP);
- ...
--vmstate_register_ram_global(MR);
-@@
-expression MR;
-expression NAME;
-expression SIZE;
-expression ERRP;
-@@
--memory_region_init_rom_nomigrate(MR, NULL, NAME, SIZE, ERRP);
-+memory_region_init_rom(MR, NULL, NAME, SIZE, ERRP);
- ...
--vmstate_register_ram_global(MR);
-@@
-expression MR;
-expression OPS;
-expression OPAQUE;
-expression NAME;
-expression SIZE;
-expression ERRP;
-@@
--memory_region_init_rom_device_nomigrate(MR, NULL, OPS, OPAQUE, NAME, SIZE, ERRP);
-+memory_region_init_rom_device(MR, NULL, OPS, OPAQUE, NAME, SIZE, ERRP);
- ...
--vmstate_register_ram_global(MR);
diff --git a/scsi/qemu-pr-helper.c b/scsi/qemu-pr-helper.c
index 0659ceef09..181ed4a186 100644
--- a/scsi/qemu-pr-helper.c
+++ b/scsi/qemu-pr-helper.c
@@ -421,10 +421,13 @@ static int multipath_pr_out(int fd, const uint8_t *cdb, uint8_t *sense,
     int rq_servact = cdb[1];
     int rq_scope = cdb[2] >> 4;
     int rq_type = cdb[2] & 0xf;
-    struct prout_param_descriptor paramp;
+    g_autofree struct prout_param_descriptor *paramp = NULL;
     char transportids[PR_HELPER_DATA_SIZE];
     int r;
 
+    paramp = g_malloc0(sizeof(struct prout_param_descriptor)
+                       + sizeof(struct transportid *) * MPATH_MX_TIDS);
+
     if (sz < PR_OUT_FIXED_PARAM_SIZE) {
         /* Illegal request, Parameter list length error.  This isn't fatal;
          * we have read the data, send an error without closing the socket.
@@ -454,10 +457,9 @@ static int multipath_pr_out(int fd, const uint8_t *cdb, uint8_t *sense,
      * used by libmpathpersist (which, of course, will immediately
      * do the opposite).
      */
-    memset(&paramp, 0, sizeof(paramp));
-    memcpy(&paramp.key, &param[0], 8);
-    memcpy(&paramp.sa_key, &param[8], 8);
-    paramp.sa_flags = param[20];
+    memcpy(&paramp->key, &param[0], 8);
+    memcpy(&paramp->sa_key, &param[8], 8);
+    paramp->sa_flags = param[20];
     if (sz > PR_OUT_FIXED_PARAM_SIZE) {
         size_t transportid_len;
         int i, j;
@@ -520,12 +522,13 @@ static int multipath_pr_out(int fd, const uint8_t *cdb, uint8_t *sense,
                 return CHECK_CONDITION;
             }
 
-            paramp.trnptid_list[paramp.num_transportid++] = id;
+            assert(paramp->num_transportid < MPATH_MX_TIDS);
+            paramp->trnptid_list[paramp->num_transportid++] = id;
         }
     }
 
     r = mpath_persistent_reserve_out(fd, rq_servact, rq_scope, rq_type,
-                                     &paramp, noisy, verbose);
+                                     paramp, noisy, verbose);
     return mpath_reconstruct_sense(fd, r, sense);
 }
 #endif
diff --git a/softmmu/vl.c b/softmmu/vl.c
index ff2685dff8..6a285925b3 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -3789,6 +3789,22 @@ void qemu_init(int argc, char **argv, char **envp)
      */
     loc_set_none();
 
+    /*
+     * Check for -cpu help and -device help before we call select_machine(),
+     * which will return an error if the architecture has no default machine
+     * type and the user did not specify one, so that the user doesn't need
+     * to say '-cpu help -machine something'.
+     */
+    if (cpu_option && is_help_option(cpu_option)) {
+        list_cpus(cpu_option);
+        exit(0);
+    }
+
+    if (qemu_opts_foreach(qemu_find_opts("device"),
+                          device_help_func, NULL, NULL)) {
+        exit(0);
+    }
+
     user_register_global_props();
 
     replay_configure(icount_opts);
@@ -3877,11 +3893,6 @@ void qemu_init(int argc, char **argv, char **envp)
         qemu_set_hw_version(machine_class->hw_version);
     }
 
-    if (cpu_option && is_help_option(cpu_option)) {
-        list_cpus(cpu_option);
-        exit(0);
-    }
-
     if (!trace_init_backends()) {
         exit(1);
     }
@@ -4112,11 +4123,6 @@ void qemu_init(int argc, char **argv, char **envp)
                       fsdev_init_func, NULL, &error_fatal);
 #endif
 
-    if (qemu_opts_foreach(qemu_find_opts("device"),
-                          device_help_func, NULL, NULL)) {
-        exit(0);
-    }
-
     /*
      * Note: we need to create block backends before
      * machine_set_property(), so machine properties can refer to
diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index 3623ecefbd..7fe367078c 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -1153,22 +1153,6 @@ static void arm_set_pmu(Object *obj, bool value, Error **errp)
     cpu->has_pmu = value;
 }
 
-static void arm_get_init_svtor(Object *obj, Visitor *v, const char *name,
-                               void *opaque, Error **errp)
-{
-    ARMCPU *cpu = ARM_CPU(obj);
-
-    visit_type_uint32(v, name, &cpu->init_svtor, errp);
-}
-
-static void arm_set_init_svtor(Object *obj, Visitor *v, const char *name,
-                               void *opaque, Error **errp)
-{
-    ARMCPU *cpu = ARM_CPU(obj);
-
-    visit_type_uint32(v, name, &cpu->init_svtor, errp);
-}
-
 unsigned int gt_cntfrq_period_ns(ARMCPU *cpu)
 {
     /*
@@ -1288,9 +1272,9 @@ void arm_cpu_post_init(Object *obj)
          * a simple DEFINE_PROP_UINT32 for this because we want to permit
          * the property to be set after realize.
          */
-        object_property_add(obj, "init-svtor", "uint32",
-                            arm_get_init_svtor, arm_set_init_svtor,
-                            NULL, NULL, &error_abort);
+        object_property_add_uint32_ptr(obj, "init-svtor",
+                                       &cpu->init_svtor,
+                                       OBJ_PROP_FLAG_READWRITE, &error_abort);
     }
 
     qdev_property_add_static(DEVICE(obj), &arm_cpu_cfgend_property);
diff --git a/target/i386/hax-posix.c b/target/i386/hax-posix.c
index a5426a6dac..3bad89f133 100644
--- a/target/i386/hax-posix.c
+++ b/target/i386/hax-posix.c
@@ -108,41 +108,12 @@ int hax_mod_version(struct hax_state *hax, struct hax_module_version *version)
 
 static char *hax_vm_devfs_string(int vm_id)
 {
-    char *name;
-
-    if (vm_id > MAX_VM_ID) {
-        fprintf(stderr, "Too big VM id\n");
-        return NULL;
-    }
-
-#define HAX_VM_DEVFS "/dev/hax_vm/vmxx"
-    name = g_strdup(HAX_VM_DEVFS);
-    if (!name) {
-        return NULL;
-    }
-
-    snprintf(name, sizeof HAX_VM_DEVFS, "/dev/hax_vm/vm%02d", vm_id);
-    return name;
+    return g_strdup_printf("/dev/hax_vm/vm%02d", vm_id);
 }
 
 static char *hax_vcpu_devfs_string(int vm_id, int vcpu_id)
 {
-    char *name;
-
-    if (vm_id > MAX_VM_ID || vcpu_id > MAX_VCPU_ID) {
-        fprintf(stderr, "Too big vm id %x or vcpu id %x\n", vm_id, vcpu_id);
-        return NULL;
-    }
-
-#define HAX_VCPU_DEVFS "/dev/hax_vmxx/vcpuxx"
-    name = g_strdup(HAX_VCPU_DEVFS);
-    if (!name) {
-        return NULL;
-    }
-
-    snprintf(name, sizeof HAX_VCPU_DEVFS, "/dev/hax_vm%02d/vcpu%02d",
-             vm_id, vcpu_id);
-    return name;
+    return g_strdup_printf("/dev/hax_vm%02d/vcpu%02d", vm_id, vcpu_id);
 }
 
 int hax_host_create_vm(struct hax_state *hax, int *vmid)
diff --git a/target/i386/hax-windows.c b/target/i386/hax-windows.c
index 5729ad9b48..0ba488c468 100644
--- a/target/i386/hax-windows.c
+++ b/target/i386/hax-windows.c
@@ -185,41 +185,12 @@ int hax_mod_version(struct hax_state *hax, struct hax_module_version *version)
 
 static char *hax_vm_devfs_string(int vm_id)
 {
-    char *name;
-
-    if (vm_id > MAX_VM_ID) {
-        fprintf(stderr, "Too big VM id\n");
-        return NULL;
-    }
-
-#define HAX_VM_DEVFS "\\\\.\\hax_vmxx"
-    name = g_strdup(HAX_VM_DEVFS);
-    if (!name) {
-        return NULL;
-    }
-
-    snprintf(name, sizeof HAX_VM_DEVFS, "\\\\.\\hax_vm%02d", vm_id);
-    return name;
+    return g_strdup_printf("/dev/hax_vm/vm%02d", vm_id);
 }
 
 static char *hax_vcpu_devfs_string(int vm_id, int vcpu_id)
 {
-    char *name;
-
-    if (vm_id > MAX_VM_ID || vcpu_id > MAX_VCPU_ID) {
-        fprintf(stderr, "Too big vm id %x or vcpu id %x\n", vm_id, vcpu_id);
-        return NULL;
-    }
-
-#define HAX_VCPU_DEVFS "\\\\.\\hax_vmxx_vcpuxx"
-    name = g_strdup(HAX_VCPU_DEVFS);
-    if (!name) {
-        return NULL;
-    }
-
-    snprintf(name, sizeof HAX_VCPU_DEVFS, "\\\\.\\hax_vm%02d_vcpu%02d",
-             vm_id, vcpu_id);
-    return name;
+    return g_strdup_printf("/dev/hax_vm%02d/vcpu%02d", vm_id, vcpu_id);
 }
 
 int hax_host_create_vm(struct hax_state *hax, int *vmid)
diff --git a/target/i386/sev.c b/target/i386/sev.c
index 024bb24e51..846018a12d 100644
--- a/target/i386/sev.c
+++ b/target/i386/sev.c
@@ -267,109 +267,21 @@ qsev_guest_class_init(ObjectClass *oc, void *data)
 }
 
 static void
-qsev_guest_set_handle(Object *obj, Visitor *v, const char *name,
-                      void *opaque, Error **errp)
-{
-    QSevGuestInfo *sev = QSEV_GUEST_INFO(obj);
-    uint32_t value;
-
-    visit_type_uint32(v, name, &value, errp);
-    sev->handle = value;
-}
-
-static void
-qsev_guest_set_policy(Object *obj, Visitor *v, const char *name,
-                      void *opaque, Error **errp)
-{
-    QSevGuestInfo *sev = QSEV_GUEST_INFO(obj);
-    uint32_t value;
-
-    visit_type_uint32(v, name, &value, errp);
-    sev->policy = value;
-}
-
-static void
-qsev_guest_set_cbitpos(Object *obj, Visitor *v, const char *name,
-                       void *opaque, Error **errp)
-{
-    QSevGuestInfo *sev = QSEV_GUEST_INFO(obj);
-    uint32_t value;
-
-    visit_type_uint32(v, name, &value, errp);
-    sev->cbitpos = value;
-}
-
-static void
-qsev_guest_set_reduced_phys_bits(Object *obj, Visitor *v, const char *name,
-                                   void *opaque, Error **errp)
-{
-    QSevGuestInfo *sev = QSEV_GUEST_INFO(obj);
-    uint32_t value;
-
-    visit_type_uint32(v, name, &value, errp);
-    sev->reduced_phys_bits = value;
-}
-
-static void
-qsev_guest_get_policy(Object *obj, Visitor *v, const char *name,
-                      void *opaque, Error **errp)
-{
-    uint32_t value;
-    QSevGuestInfo *sev = QSEV_GUEST_INFO(obj);
-
-    value = sev->policy;
-    visit_type_uint32(v, name, &value, errp);
-}
-
-static void
-qsev_guest_get_handle(Object *obj, Visitor *v, const char *name,
-                      void *opaque, Error **errp)
-{
-    uint32_t value;
-    QSevGuestInfo *sev = QSEV_GUEST_INFO(obj);
-
-    value = sev->handle;
-    visit_type_uint32(v, name, &value, errp);
-}
-
-static void
-qsev_guest_get_cbitpos(Object *obj, Visitor *v, const char *name,
-                       void *opaque, Error **errp)
-{
-    uint32_t value;
-    QSevGuestInfo *sev = QSEV_GUEST_INFO(obj);
-
-    value = sev->cbitpos;
-    visit_type_uint32(v, name, &value, errp);
-}
-
-static void
-qsev_guest_get_reduced_phys_bits(Object *obj, Visitor *v, const char *name,
-                                   void *opaque, Error **errp)
-{
-    uint32_t value;
-    QSevGuestInfo *sev = QSEV_GUEST_INFO(obj);
-
-    value = sev->reduced_phys_bits;
-    visit_type_uint32(v, name, &value, errp);
-}
-
-static void
 qsev_guest_init(Object *obj)
 {
     QSevGuestInfo *sev = QSEV_GUEST_INFO(obj);
 
     sev->sev_device = g_strdup(DEFAULT_SEV_DEVICE);
     sev->policy = DEFAULT_GUEST_POLICY;
-    object_property_add(obj, "policy", "uint32", qsev_guest_get_policy,
-                        qsev_guest_set_policy, NULL, NULL, NULL);
-    object_property_add(obj, "handle", "uint32", qsev_guest_get_handle,
-                        qsev_guest_set_handle, NULL, NULL, NULL);
-    object_property_add(obj, "cbitpos", "uint32", qsev_guest_get_cbitpos,
-                        qsev_guest_set_cbitpos, NULL, NULL, NULL);
-    object_property_add(obj, "reduced-phys-bits", "uint32",
-                        qsev_guest_get_reduced_phys_bits,
-                        qsev_guest_set_reduced_phys_bits, NULL, NULL, NULL);
+    object_property_add_uint32_ptr(obj, "policy", &sev->policy,
+                                   OBJ_PROP_FLAG_READWRITE, NULL);
+    object_property_add_uint32_ptr(obj, "handle", &sev->handle,
+                                   OBJ_PROP_FLAG_READWRITE, NULL);
+    object_property_add_uint32_ptr(obj, "cbitpos", &sev->cbitpos,
+                                   OBJ_PROP_FLAG_READWRITE, NULL);
+    object_property_add_uint32_ptr(obj, "reduced-phys-bits",
+                                   &sev->reduced_phys_bits,
+                                   OBJ_PROP_FLAG_READWRITE, NULL);
 }
 
 /* sev guest info */
diff --git a/target/i386/whp-dispatch.h b/target/i386/whp-dispatch.h
index 87d049ceab..e4695c349f 100644
--- a/target/i386/whp-dispatch.h
+++ b/target/i386/whp-dispatch.h
@@ -23,6 +23,12 @@
   X(HRESULT, WHvGetVirtualProcessorRegisters, (WHV_PARTITION_HANDLE Partition, UINT32 VpIndex, const WHV_REGISTER_NAME* RegisterNames, UINT32 RegisterCount, WHV_REGISTER_VALUE* RegisterValues)) \
   X(HRESULT, WHvSetVirtualProcessorRegisters, (WHV_PARTITION_HANDLE Partition, UINT32 VpIndex, const WHV_REGISTER_NAME* RegisterNames, UINT32 RegisterCount, const WHV_REGISTER_VALUE* RegisterValues)) \
 
+/*
+ * These are supplemental functions that may not be present
+ * on all versions and are not critical for basic functionality.
+ */
+#define LIST_WINHVPLATFORM_FUNCTIONS_SUPPLEMENTAL(X) \
+  X(HRESULT, WHvSuspendPartitionTime, (WHV_PARTITION_HANDLE Partition)) \
 
 #define LIST_WINHVEMULATION_FUNCTIONS(X) \
   X(HRESULT, WHvEmulatorCreateEmulator, (const WHV_EMULATOR_CALLBACKS* Callbacks, WHV_EMULATOR_HANDLE* Emulator)) \
@@ -40,10 +46,12 @@
 /* Define function typedef */
 LIST_WINHVPLATFORM_FUNCTIONS(WHP_DEFINE_TYPE)
 LIST_WINHVEMULATION_FUNCTIONS(WHP_DEFINE_TYPE)
+LIST_WINHVPLATFORM_FUNCTIONS_SUPPLEMENTAL(WHP_DEFINE_TYPE)
 
 struct WHPDispatch {
     LIST_WINHVPLATFORM_FUNCTIONS(WHP_DECLARE_MEMBER)
     LIST_WINHVEMULATION_FUNCTIONS(WHP_DECLARE_MEMBER)
+    LIST_WINHVPLATFORM_FUNCTIONS_SUPPLEMENTAL(WHP_DECLARE_MEMBER)
 };
 
 extern struct WHPDispatch whp_dispatch;
@@ -53,6 +61,7 @@ bool init_whp_dispatch(void);
 typedef enum WHPFunctionList {
     WINHV_PLATFORM_FNS_DEFAULT,
     WINHV_EMULATION_FNS_DEFAULT,
+    WINHV_PLATFORM_FNS_SUPPLEMENTAL
 } WHPFunctionList;
 
 #endif /* WHP_DISPATCH_H */
diff --git a/target/i386/whpx-all.c b/target/i386/whpx-all.c
index 683d49d217..c78baac6df 100644
--- a/target/i386/whpx-all.c
+++ b/target/i386/whpx-all.c
@@ -114,7 +114,6 @@ static const WHV_REGISTER_NAME whpx_register_names[] = {
     WHvX64RegisterXmmControlStatus,
 
     /* X64 MSRs */
-    WHvX64RegisterTsc,
     WHvX64RegisterEfer,
 #ifdef TARGET_X86_64
     WHvX64RegisterKernelGsBase,
@@ -215,7 +214,44 @@ static SegmentCache whpx_seg_h2q(const WHV_X64_SEGMENT_REGISTER *hs)
     return qs;
 }
 
-static void whpx_set_registers(CPUState *cpu)
+static int whpx_set_tsc(CPUState *cpu)
+{
+    struct CPUX86State *env = (CPUArchState *)(cpu->env_ptr);
+    WHV_REGISTER_NAME tsc_reg = WHvX64RegisterTsc;
+    WHV_REGISTER_VALUE tsc_val;
+    HRESULT hr;
+    struct whpx_state *whpx = &whpx_global;
+
+    /*
+     * Suspend the partition prior to setting the TSC to reduce the variance
+     * in TSC across vCPUs. When the first vCPU runs post suspend, the
+     * partition is automatically resumed.
+     */
+    if (whp_dispatch.WHvSuspendPartitionTime) {
+
+        /*
+         * Unable to suspend partition while setting TSC is not a fatal
+         * error. It just increases the likelihood of TSC variance between
+         * vCPUs and some guest OS are able to handle that just fine.
+         */
+        hr = whp_dispatch.WHvSuspendPartitionTime(whpx->partition);
+        if (FAILED(hr)) {
+            warn_report("WHPX: Failed to suspend partition, hr=%08lx", hr);
+        }
+    }
+
+    tsc_val.Reg64 = env->tsc;
+    hr = whp_dispatch.WHvSetVirtualProcessorRegisters(
+        whpx->partition, cpu->cpu_index, &tsc_reg, 1, &tsc_val);
+    if (FAILED(hr)) {
+        error_report("WHPX: Failed to set TSC, hr=%08lx", hr);
+        return -1;
+    }
+
+    return 0;
+}
+
+static void whpx_set_registers(CPUState *cpu, int level)
 {
     struct whpx_state *whpx = &whpx_global;
     struct whpx_vcpu *vcpu = get_whpx_vcpu(cpu);
@@ -230,6 +266,14 @@ static void whpx_set_registers(CPUState *cpu)
 
     assert(cpu_is_stopped(cpu) || qemu_cpu_is_self(cpu));
 
+    /*
+     * Following MSRs have side effects on the guest or are too heavy for
+     * runtime. Limit them to full state update.
+     */
+    if (level >= WHPX_SET_RESET_STATE) {
+        whpx_set_tsc(cpu);
+    }
+
     memset(&vcxt, 0, sizeof(struct whpx_register_set));
 
     v86 = (env->eflags & VM_MASK);
@@ -330,8 +374,6 @@ static void whpx_set_registers(CPUState *cpu)
     idx += 1;
 
     /* MSRs */
-    assert(whpx_register_names[idx] == WHvX64RegisterTsc);
-    vcxt.values[idx++].Reg64 = env->tsc;
     assert(whpx_register_names[idx] == WHvX64RegisterEfer);
     vcxt.values[idx++].Reg64 = env->efer;
 #ifdef TARGET_X86_64
@@ -379,6 +421,25 @@ static void whpx_set_registers(CPUState *cpu)
     return;
 }
 
+static int whpx_get_tsc(CPUState *cpu)
+{
+    struct CPUX86State *env = (CPUArchState *)(cpu->env_ptr);
+    WHV_REGISTER_NAME tsc_reg = WHvX64RegisterTsc;
+    WHV_REGISTER_VALUE tsc_val;
+    HRESULT hr;
+    struct whpx_state *whpx = &whpx_global;
+
+    hr = whp_dispatch.WHvGetVirtualProcessorRegisters(
+        whpx->partition, cpu->cpu_index, &tsc_reg, 1, &tsc_val);
+    if (FAILED(hr)) {
+        error_report("WHPX: Failed to get TSC, hr=%08lx", hr);
+        return -1;
+    }
+
+    env->tsc = tsc_val.Reg64;
+    return 0;
+}
+
 static void whpx_get_registers(CPUState *cpu)
 {
     struct whpx_state *whpx = &whpx_global;
@@ -394,6 +455,11 @@ static void whpx_get_registers(CPUState *cpu)
 
     assert(cpu_is_stopped(cpu) || qemu_cpu_is_self(cpu));
 
+    if (!env->tsc_valid) {
+        whpx_get_tsc(cpu);
+        env->tsc_valid = !runstate_is_running();
+    }
+
     hr = whp_dispatch.WHvGetVirtualProcessorRegisters(
         whpx->partition, cpu->cpu_index,
         whpx_register_names,
@@ -492,8 +558,6 @@ static void whpx_get_registers(CPUState *cpu)
     idx += 1;
 
     /* MSRs */
-    assert(whpx_register_names[idx] == WHvX64RegisterTsc);
-    env->tsc = vcxt.values[idx++].Reg64;
     assert(whpx_register_names[idx] == WHvX64RegisterEfer);
     env->efer = vcxt.values[idx++].Reg64;
 #ifdef TARGET_X86_64
@@ -841,9 +905,8 @@ static void whpx_vcpu_process_async_events(CPUState *cpu)
 
     if ((cpu->interrupt_request & CPU_INTERRUPT_INIT) &&
         !(env->hflags & HF_SMM_MASK)) {
-
+        whpx_cpu_synchronize_state(cpu);
         do_cpu_init(x86_cpu);
-        cpu->vcpu_dirty = true;
         vcpu->interruptable = true;
     }
 
@@ -859,17 +922,13 @@ static void whpx_vcpu_process_async_events(CPUState *cpu)
     }
 
     if (cpu->interrupt_request & CPU_INTERRUPT_SIPI) {
-        if (!cpu->vcpu_dirty) {
-            whpx_get_registers(cpu);
-        }
+        whpx_cpu_synchronize_state(cpu);
         do_cpu_sipi(x86_cpu);
     }
 
     if (cpu->interrupt_request & CPU_INTERRUPT_TPR) {
         cpu->interrupt_request &= ~CPU_INTERRUPT_TPR;
-        if (!cpu->vcpu_dirty) {
-            whpx_get_registers(cpu);
-        }
+        whpx_cpu_synchronize_state(cpu);
         apic_handle_tpr_access_report(x86_cpu->apic_state, env->eip,
                                       env->tpr_access_type);
     }
@@ -896,7 +955,7 @@ static int whpx_vcpu_run(CPUState *cpu)
 
     do {
         if (cpu->vcpu_dirty) {
-            whpx_set_registers(cpu);
+            whpx_set_registers(cpu, WHPX_SET_RUNTIME_STATE);
             cpu->vcpu_dirty = false;
         }
 
@@ -980,38 +1039,32 @@ static int whpx_vcpu_run(CPUState *cpu)
             WHV_REGISTER_VALUE reg_values[5];
             WHV_REGISTER_NAME reg_names[5];
             UINT32 reg_count = 5;
-            UINT64 rip, rax, rcx, rdx, rbx;
+            UINT64 cpuid_fn, rip = 0, rax = 0, rcx = 0, rdx = 0, rbx = 0;
+            X86CPU *x86_cpu = X86_CPU(cpu);
+            CPUX86State *env = &x86_cpu->env;
 
             memset(reg_values, 0, sizeof(reg_values));
 
             rip = vcpu->exit_ctx.VpContext.Rip +
                   vcpu->exit_ctx.VpContext.InstructionLength;
-            switch (vcpu->exit_ctx.CpuidAccess.Rax) {
-            case 1:
-                rax = vcpu->exit_ctx.CpuidAccess.DefaultResultRax;
-                /* Advertise that we are running on a hypervisor */
-                rcx =
-                    vcpu->exit_ctx.CpuidAccess.DefaultResultRcx |
-                    CPUID_EXT_HYPERVISOR;
-
-                rdx = vcpu->exit_ctx.CpuidAccess.DefaultResultRdx;
-                rbx = vcpu->exit_ctx.CpuidAccess.DefaultResultRbx;
-                break;
+            cpuid_fn = vcpu->exit_ctx.CpuidAccess.Rax;
+
+            /*
+             * Ideally, these should be supplied to the hypervisor during VCPU
+             * initialization and it should be able to satisfy this request.
+             * But, currently, WHPX doesn't support setting CPUID values in the
+             * hypervisor once the partition has been setup, which is too late
+             * since VCPUs are realized later. For now, use the values from
+             * QEMU to satisfy these requests, until WHPX adds support for
+             * being able to set these values in the hypervisor at runtime.
+             */
+            cpu_x86_cpuid(env, cpuid_fn, 0, (UINT32 *)&rax, (UINT32 *)&rbx,
+                (UINT32 *)&rcx, (UINT32 *)&rdx);
+            switch (cpuid_fn) {
             case 0x80000001:
-                rax = vcpu->exit_ctx.CpuidAccess.DefaultResultRax;
                 /* Remove any support of OSVW */
-                rcx =
-                    vcpu->exit_ctx.CpuidAccess.DefaultResultRcx &
-                    ~CPUID_EXT3_OSVW;
-
-                rdx = vcpu->exit_ctx.CpuidAccess.DefaultResultRdx;
-                rbx = vcpu->exit_ctx.CpuidAccess.DefaultResultRbx;
+                rcx &= ~CPUID_EXT3_OSVW;
                 break;
-            default:
-                rax = vcpu->exit_ctx.CpuidAccess.DefaultResultRax;
-                rcx = vcpu->exit_ctx.CpuidAccess.DefaultResultRcx;
-                rdx = vcpu->exit_ctx.CpuidAccess.DefaultResultRdx;
-                rbx = vcpu->exit_ctx.CpuidAccess.DefaultResultRbx;
             }
 
             reg_names[0] = WHvX64RegisterRip;
@@ -1067,21 +1120,23 @@ static int whpx_vcpu_run(CPUState *cpu)
 
 static void do_whpx_cpu_synchronize_state(CPUState *cpu, run_on_cpu_data arg)
 {
-    whpx_get_registers(cpu);
-    cpu->vcpu_dirty = true;
+    if (!cpu->vcpu_dirty) {
+        whpx_get_registers(cpu);
+        cpu->vcpu_dirty = true;
+    }
 }
 
 static void do_whpx_cpu_synchronize_post_reset(CPUState *cpu,
                                                run_on_cpu_data arg)
 {
-    whpx_set_registers(cpu);
+    whpx_set_registers(cpu, WHPX_SET_RESET_STATE);
     cpu->vcpu_dirty = false;
 }
 
 static void do_whpx_cpu_synchronize_post_init(CPUState *cpu,
                                               run_on_cpu_data arg)
 {
-    whpx_set_registers(cpu);
+    whpx_set_registers(cpu, WHPX_SET_FULL_STATE);
     cpu->vcpu_dirty = false;
 }
 
@@ -1123,6 +1178,15 @@ void whpx_cpu_synchronize_pre_loadvm(CPUState *cpu)
 
 static Error *whpx_migration_blocker;
 
+static void whpx_cpu_update_state(void *opaque, int running, RunState state)
+{
+    CPUX86State *env = opaque;
+
+    if (running) {
+        env->tsc_valid = false;
+    }
+}
+
 int whpx_init_vcpu(CPUState *cpu)
 {
     HRESULT hr;
@@ -1178,6 +1242,7 @@ int whpx_init_vcpu(CPUState *cpu)
 
     cpu->vcpu_dirty = true;
     cpu->hax_vcpu = (struct hax_vcpu_state *)vcpu;
+    qemu_add_vm_change_state_handler(whpx_cpu_update_state, cpu->env_ptr);
 
     return 0;
 }
@@ -1367,6 +1432,10 @@ static bool load_whp_dispatch_fns(HMODULE *handle,
 
     #define WINHV_PLATFORM_DLL "WinHvPlatform.dll"
     #define WINHV_EMULATION_DLL "WinHvEmulation.dll"
+    #define WHP_LOAD_FIELD_OPTIONAL(return_type, function_name, signature) \
+        whp_dispatch.function_name = \
+            (function_name ## _t)GetProcAddress(hLib, #function_name); \
+
     #define WHP_LOAD_FIELD(return_type, function_name, signature) \
         whp_dispatch.function_name = \
             (function_name ## _t)GetProcAddress(hLib, #function_name); \
@@ -1394,6 +1463,11 @@ static bool load_whp_dispatch_fns(HMODULE *handle,
         WHP_LOAD_LIB(WINHV_EMULATION_DLL, hLib)
         LIST_WINHVEMULATION_FUNCTIONS(WHP_LOAD_FIELD)
         break;
+
+    case WINHV_PLATFORM_FNS_SUPPLEMENTAL:
+        WHP_LOAD_LIB(WINHV_PLATFORM_DLL, hLib)
+        LIST_WINHVPLATFORM_FUNCTIONS_SUPPLEMENTAL(WHP_LOAD_FIELD_OPTIONAL)
+        break;
     }
 
     *handle = hLib;
@@ -1554,6 +1628,8 @@ bool init_whp_dispatch(void)
         goto error;
     }
 
+    assert(load_whp_dispatch_fns(&hWinHvPlatform,
+        WINHV_PLATFORM_FNS_SUPPLEMENTAL));
     whp_dispatch_initialized = true;
 
     return true;
diff --git a/target/ppc/cpu-qom.h b/target/ppc/cpu-qom.h
index e499575dc8..15d6b54a7d 100644
--- a/target/ppc/cpu-qom.h
+++ b/target/ppc/cpu-qom.h
@@ -177,6 +177,7 @@ typedef struct PowerPCCPUClass {
     uint64_t insns_flags;
     uint64_t insns_flags2;
     uint64_t msr_mask;
+    uint64_t lpcr_mask;         /* Available bits in the LPCR */
     uint64_t lpcr_pm;           /* Power-saving mode Exit Cause Enable bits */
     powerpc_mmu_t   mmu_model;
     powerpc_excp_t  excp_model;
diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h
index b283042515..f8c7d6f19c 100644
--- a/target/ppc/cpu.h
+++ b/target/ppc/cpu.h
@@ -24,8 +24,6 @@
 #include "exec/cpu-defs.h"
 #include "cpu-qom.h"
 
-/* #define PPC_EMULATE_32BITS_HYPV */
-
 #define TCG_GUEST_DEFAULT_MO 0
 
 #define TARGET_PAGE_BITS_64K 16
@@ -300,13 +298,12 @@ typedef struct ppc_v3_pate_t {
 #define MSR_SF   63 /* Sixty-four-bit mode                            hflags */
 #define MSR_TAG  62 /* Tag-active mode (POWERx ?)                            */
 #define MSR_ISF  61 /* Sixty-four-bit interrupt mode on 630                  */
-#define MSR_SHV  60 /* hypervisor state                               hflags */
+#define MSR_HV   60 /* hypervisor state                               hflags */
 #define MSR_TS0  34 /* Transactional state, 2 bits (Book3s)                  */
 #define MSR_TS1  33
 #define MSR_TM   32 /* Transactional Memory Available (Book3s)               */
 #define MSR_CM   31 /* Computation mode for BookE                     hflags */
 #define MSR_ICM  30 /* Interrupt computation mode for BookE                  */
-#define MSR_THV  29 /* hypervisor state for 32 bits PowerPC           hflags */
 #define MSR_GS   28 /* guest state for BookE                                 */
 #define MSR_UCLE 26 /* User-mode cache lock enable for BookE                 */
 #define MSR_VR   25 /* altivec available                            x hflags */
@@ -401,10 +398,13 @@ typedef struct ppc_v3_pate_t {
 
 #define msr_sf   ((env->msr >> MSR_SF)   & 1)
 #define msr_isf  ((env->msr >> MSR_ISF)  & 1)
-#define msr_shv  ((env->msr >> MSR_SHV)  & 1)
+#if defined(TARGET_PPC64)
+#define msr_hv   ((env->msr >> MSR_HV)   & 1)
+#else
+#define msr_hv   (0)
+#endif
 #define msr_cm   ((env->msr >> MSR_CM)   & 1)
 #define msr_icm  ((env->msr >> MSR_ICM)  & 1)
-#define msr_thv  ((env->msr >> MSR_THV)  & 1)
 #define msr_gs   ((env->msr >> MSR_GS)   & 1)
 #define msr_ucle ((env->msr >> MSR_UCLE) & 1)
 #define msr_vr   ((env->msr >> MSR_VR)   & 1)
@@ -449,16 +449,9 @@ typedef struct ppc_v3_pate_t {
 
 /* Hypervisor bit is more specific */
 #if defined(TARGET_PPC64)
-#define MSR_HVB (1ULL << MSR_SHV)
-#define msr_hv  msr_shv
-#else
-#if defined(PPC_EMULATE_32BITS_HYPV)
-#define MSR_HVB (1ULL << MSR_THV)
-#define msr_hv  msr_thv
+#define MSR_HVB (1ULL << MSR_HV)
 #else
 #define MSR_HVB (0ULL)
-#define msr_hv  (0)
-#endif
 #endif
 
 /* DSISR */
@@ -1051,10 +1044,6 @@ struct CPUPPCState {
     uint32_t flags;
     uint64_t insns_flags;
     uint64_t insns_flags2;
-#if defined(TARGET_PPC64)
-    ppc_slb_t vrma_slb;
-    target_ulong rmls;
-#endif
 
     int error_code;
     uint32_t pending_interrupts;
@@ -1231,7 +1220,8 @@ int ppc64_cpu_write_elf64_note(WriteCoreDumpFunction f, CPUState *cs,
 int ppc32_cpu_write_elf32_note(WriteCoreDumpFunction f, CPUState *cs,
                                int cpuid, void *opaque);
 #ifndef CONFIG_USER_ONLY
-void ppc_cpu_do_system_reset(CPUState *cs);
+void ppc_cpu_do_system_reset(CPUState *cs, target_ulong vector);
+void ppc_cpu_do_fwnmi_machine_check(CPUState *cs, target_ulong vector);
 extern const VMStateDescription vmstate_ppc_cpu;
 #endif
 
diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c
index 027f54c0ed..08bc885ca6 100644
--- a/target/ppc/excp_helper.c
+++ b/target/ppc/excp_helper.c
@@ -128,6 +128,37 @@ static uint64_t ppc_excp_vector_offset(CPUState *cs, int ail)
     return offset;
 }
 
+static inline void powerpc_set_excp_state(PowerPCCPU *cpu,
+                                          target_ulong vector, target_ulong msr)
+{
+    CPUState *cs = CPU(cpu);
+    CPUPPCState *env = &cpu->env;
+
+    /*
+     * We don't use hreg_store_msr here as already have treated any
+     * special case that could occur. Just store MSR and update hflags
+     *
+     * Note: We *MUST* not use hreg_store_msr() as-is anyway because it
+     * will prevent setting of the HV bit which some exceptions might need
+     * to do.
+     */
+    env->msr = msr & env->msr_mask;
+    hreg_compute_hflags(env);
+    env->nip = vector;
+    /* Reset exception state */
+    cs->exception_index = POWERPC_EXCP_NONE;
+    env->error_code = 0;
+
+    /* Reset the reservation */
+    env->reserve_addr = -1;
+
+    /*
+     * Any interrupt is context synchronizing, check if TCG TLB needs
+     * a delayed flush on ppc64
+     */
+    check_tlb_flush(env, false);
+}
+
 /*
  * Note that this function should be greatly optimized when called
  * with a constant excp, from ppc_hw_interrupt
@@ -768,29 +799,8 @@ static inline void powerpc_excp(PowerPCCPU *cpu, int excp_model, int excp)
         }
     }
 #endif
-    /*
-     * We don't use hreg_store_msr here as already have treated any
-     * special case that could occur. Just store MSR and update hflags
-     *
-     * Note: We *MUST* not use hreg_store_msr() as-is anyway because it
-     * will prevent setting of the HV bit which some exceptions might need
-     * to do.
-     */
-    env->msr = new_msr & env->msr_mask;
-    hreg_compute_hflags(env);
-    env->nip = vector;
-    /* Reset exception state */
-    cs->exception_index = POWERPC_EXCP_NONE;
-    env->error_code = 0;
 
-    /* Reset the reservation */
-    env->reserve_addr = -1;
-
-    /*
-     * Any interrupt is context synchronizing, check if TCG TLB needs
-     * a delayed flush on ppc64
-     */
-    check_tlb_flush(env, false);
+    powerpc_set_excp_state(cpu, vector, new_msr);
 }
 
 void ppc_cpu_do_interrupt(CPUState *cs)
@@ -951,12 +961,35 @@ static void ppc_hw_interrupt(CPUPPCState *env)
     }
 }
 
-void ppc_cpu_do_system_reset(CPUState *cs)
+void ppc_cpu_do_system_reset(CPUState *cs, target_ulong vector)
 {
     PowerPCCPU *cpu = POWERPC_CPU(cs);
     CPUPPCState *env = &cpu->env;
 
     powerpc_excp(cpu, env->excp_model, POWERPC_EXCP_RESET);
+    if (vector != -1) {
+        env->nip = vector;
+    }
+}
+
+void ppc_cpu_do_fwnmi_machine_check(CPUState *cs, target_ulong vector)
+{
+    PowerPCCPU *cpu = POWERPC_CPU(cs);
+    CPUPPCState *env = &cpu->env;
+    PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
+    target_ulong msr = 0;
+
+    /*
+     * Set MSR and NIP for the handler, SRR0/1, DAR and DSISR have already
+     * been set by KVM.
+     */
+    msr = (1ULL << MSR_ME);
+    msr |= env->msr & (1ULL << MSR_SF);
+    if (!(*pcc->interrupts_big_endian)(cpu)) {
+        msr |= (1ULL << MSR_LE);
+    }
+
+    powerpc_set_excp_state(cpu, vector, msr);
 }
 #endif /* !CONFIG_USER_ONLY */
 
diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c
index 7f44b1aa1a..597f72be1b 100644
--- a/target/ppc/kvm.c
+++ b/target/ppc/kvm.c
@@ -2113,7 +2113,7 @@ void kvmppc_error_append_smt_possible_hint(Error *const *errp)
 
 
 #ifdef TARGET_PPC64
-uint64_t kvmppc_rma_size(uint64_t current_size, unsigned int hash_shift)
+uint64_t kvmppc_vrma_limit(unsigned int hash_shift)
 {
     struct kvm_ppc_smmu_info info;
     long rampagesize, best_page_shift;
@@ -2140,8 +2140,7 @@ uint64_t kvmppc_rma_size(uint64_t current_size, unsigned int hash_shift)
         }
     }
 
-    return MIN(current_size,
-               1ULL << (best_page_shift + hash_shift - 7));
+    return 1ULL << (best_page_shift + hash_shift - 7);
 }
 #endif
 
diff --git a/target/ppc/kvm_ppc.h b/target/ppc/kvm_ppc.h
index 9e4f2357cc..332fa0aa1c 100644
--- a/target/ppc/kvm_ppc.h
+++ b/target/ppc/kvm_ppc.h
@@ -47,7 +47,7 @@ void *kvmppc_create_spapr_tce(uint32_t liobn, uint32_t page_shift,
                               int *pfd, bool need_vfio);
 int kvmppc_remove_spapr_tce(void *table, int pfd, uint32_t window_size);
 int kvmppc_reset_htab(int shift_hint);
-uint64_t kvmppc_rma_size(uint64_t current_size, unsigned int hash_shift);
+uint64_t kvmppc_vrma_limit(unsigned int hash_shift);
 bool kvmppc_has_cap_spapr_vfio(void);
 #endif /* !CONFIG_USER_ONLY */
 bool kvmppc_has_cap_epr(void);
@@ -255,10 +255,9 @@ static inline int kvmppc_reset_htab(int shift_hint)
     return 0;
 }
 
-static inline uint64_t kvmppc_rma_size(uint64_t current_size,
-                                       unsigned int hash_shift)
+static inline uint64_t kvmppc_vrma_limit(unsigned int hash_shift)
 {
-    return ram_size;
+    g_assert_not_reached();
 }
 
 static inline bool kvmppc_hpt_needs_host_contiguous_pages(void)
diff --git a/target/ppc/mmu-hash64.c b/target/ppc/mmu-hash64.c
index da8966ccf5..34f6009b1e 100644
--- a/target/ppc/mmu-hash64.c
+++ b/target/ppc/mmu-hash64.c
@@ -18,6 +18,7 @@
  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  */
 #include "qemu/osdep.h"
+#include "qemu/units.h"
 #include "cpu.h"
 #include "exec/exec-all.h"
 #include "exec/helper-proto.h"
@@ -668,6 +669,21 @@ unsigned ppc_hash64_hpte_page_shift_noslb(PowerPCCPU *cpu,
     return 0;
 }
 
+static bool ppc_hash64_use_vrma(CPUPPCState *env)
+{
+    switch (env->mmu_model) {
+    case POWERPC_MMU_3_00:
+        /*
+         * ISAv3.0 (POWER9) always uses VRMA, the VPM0 field and RMOR
+         * register no longer exist
+         */
+        return true;
+
+    default:
+        return !!(env->spr[SPR_LPCR] & LPCR_VPM0);
+    }
+}
+
 static void ppc_hash64_set_isi(CPUState *cs, uint64_t error_code)
 {
     CPUPPCState *env = &POWERPC_CPU(cs)->env;
@@ -676,15 +692,7 @@ static void ppc_hash64_set_isi(CPUState *cs, uint64_t error_code)
     if (msr_ir) {
         vpm = !!(env->spr[SPR_LPCR] & LPCR_VPM1);
     } else {
-        switch (env->mmu_model) {
-        case POWERPC_MMU_3_00:
-            /* Field deprecated in ISAv3.00 - interrupts always go to hyperv */
-            vpm = true;
-            break;
-        default:
-            vpm = !!(env->spr[SPR_LPCR] & LPCR_VPM0);
-            break;
-        }
+        vpm = ppc_hash64_use_vrma(env);
     }
     if (vpm && !msr_hv) {
         cs->exception_index = POWERPC_EXCP_HISI;
@@ -702,15 +710,7 @@ static void ppc_hash64_set_dsi(CPUState *cs, uint64_t dar, uint64_t dsisr)
     if (msr_dr) {
         vpm = !!(env->spr[SPR_LPCR] & LPCR_VPM1);
     } else {
-        switch (env->mmu_model) {
-        case POWERPC_MMU_3_00:
-            /* Field deprecated in ISAv3.00 - interrupts always go to hyperv */
-            vpm = true;
-            break;
-        default:
-            vpm = !!(env->spr[SPR_LPCR] & LPCR_VPM0);
-            break;
-        }
+        vpm = ppc_hash64_use_vrma(env);
     }
     if (vpm && !msr_hv) {
         cs->exception_index = POWERPC_EXCP_HDSI;
@@ -758,11 +758,67 @@ static void ppc_hash64_set_c(PowerPCCPU *cpu, hwaddr ptex, uint64_t pte1)
     stb_phys(CPU(cpu)->as, base + offset, (pte1 & 0xff) | 0x80);
 }
 
+static target_ulong rmls_limit(PowerPCCPU *cpu)
+{
+    CPUPPCState *env = &cpu->env;
+    /*
+     * In theory the meanings of RMLS values are implementation
+     * dependent.  In practice, this seems to have been the set from
+     * POWER4+..POWER8, and RMLS is no longer supported in POWER9.
+     *
+     * Unsupported values mean the OS has shot itself in the
+     * foot. Return a 0-sized RMA in this case, which we expect
+     * to trigger an immediate DSI or ISI
+     */
+    static const target_ulong rma_sizes[16] = {
+        [0] = 256 * GiB,
+        [1] = 16 * GiB,
+        [2] = 1 * GiB,
+        [3] = 64 * MiB,
+        [4] = 256 * MiB,
+        [7] = 128 * MiB,
+        [8] = 32 * MiB,
+    };
+    target_ulong rmls = (env->spr[SPR_LPCR] & LPCR_RMLS) >> LPCR_RMLS_SHIFT;
+
+    return rma_sizes[rmls];
+}
+
+static int build_vrma_slbe(PowerPCCPU *cpu, ppc_slb_t *slb)
+{
+    CPUPPCState *env = &cpu->env;
+    target_ulong lpcr = env->spr[SPR_LPCR];
+    uint32_t vrmasd = (lpcr & LPCR_VRMASD) >> LPCR_VRMASD_SHIFT;
+    target_ulong vsid = SLB_VSID_VRMA | ((vrmasd << 4) & SLB_VSID_LLP_MASK);
+    int i;
+
+    for (i = 0; i < PPC_PAGE_SIZES_MAX_SZ; i++) {
+        const PPCHash64SegmentPageSizes *sps = &cpu->hash64_opts->sps[i];
+
+        if (!sps->page_shift) {
+            break;
+        }
+
+        if ((vsid & SLB_VSID_LLP_MASK) == sps->slb_enc) {
+            slb->esid = SLB_ESID_V;
+            slb->vsid = vsid;
+            slb->sps = sps;
+            return 0;
+        }
+    }
+
+    error_report("Bad page size encoding in LPCR[VRMASD]; LPCR=0x"
+                 TARGET_FMT_lx"\n", lpcr);
+
+    return -1;
+}
+
 int ppc_hash64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr,
                                 int rwx, int mmu_idx)
 {
     CPUState *cs = CPU(cpu);
     CPUPPCState *env = &cpu->env;
+    ppc_slb_t vrma_slbe;
     ppc_slb_t *slb;
     unsigned apshift;
     hwaddr ptex;
@@ -789,27 +845,32 @@ int ppc_hash64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr,
          */
         raddr = eaddr & 0x0FFFFFFFFFFFFFFFULL;
 
-        /* In HV mode, add HRMOR if top EA bit is clear */
-        if (msr_hv || !env->has_hv_mode) {
+        if (cpu->vhyp) {
+            /*
+             * In virtual hypervisor mode, there's nothing to do:
+             *   EA == GPA == qemu guest address
+             */
+        } else if (msr_hv || !env->has_hv_mode) {
+            /* In HV mode, add HRMOR if top EA bit is clear */
             if (!(eaddr >> 63)) {
                 raddr |= env->spr[SPR_HRMOR];
             }
-        } else {
-            /* Otherwise, check VPM for RMA vs VRMA */
-            if (env->spr[SPR_LPCR] & LPCR_VPM0) {
-                slb = &env->vrma_slb;
-                if (slb->sps) {
-                    goto skip_slb_search;
-                }
-                /* Not much else to do here */
+        } else if (ppc_hash64_use_vrma(env)) {
+            /* Emulated VRMA mode */
+            slb = &vrma_slbe;
+            if (build_vrma_slbe(cpu, slb) != 0) {
+                /* Invalid VRMA setup, machine check */
                 cs->exception_index = POWERPC_EXCP_MCHECK;
                 env->error_code = 0;
                 return 1;
-            } else if (raddr < env->rmls) {
-                /* RMA. Check bounds in RMLS */
-                raddr |= env->spr[SPR_RMOR];
-            } else {
-                /* The access failed, generate the approriate interrupt */
+            }
+
+            goto skip_slb_search;
+        } else {
+            target_ulong limit = rmls_limit(cpu);
+
+            /* Emulated old-style RMO mode, bounds check against RMLS */
+            if (raddr >= limit) {
                 if (rwx == 2) {
                     ppc_hash64_set_isi(cs, SRR1_PROTFAULT);
                 } else {
@@ -821,6 +882,8 @@ int ppc_hash64_handle_mmu_fault(PowerPCCPU *cpu, vaddr eaddr,
                 }
                 return 1;
             }
+
+            raddr |= env->spr[SPR_RMOR];
         }
         tlb_set_page(cs, eaddr & TARGET_PAGE_MASK, raddr & TARGET_PAGE_MASK,
                      PAGE_READ | PAGE_WRITE | PAGE_EXEC, mmu_idx,
@@ -943,6 +1006,7 @@ skip_slb_search:
 hwaddr ppc_hash64_get_phys_page_debug(PowerPCCPU *cpu, target_ulong addr)
 {
     CPUPPCState *env = &cpu->env;
+    ppc_slb_t vrma_slbe;
     ppc_slb_t *slb;
     hwaddr ptex, raddr;
     ppc_hash_pte64_t pte;
@@ -953,22 +1017,29 @@ hwaddr ppc_hash64_get_phys_page_debug(PowerPCCPU *cpu, target_ulong addr)
         /* In real mode the top 4 effective address bits are ignored */
         raddr = addr & 0x0FFFFFFFFFFFFFFFULL;
 
-        /* In HV mode, add HRMOR if top EA bit is clear */
-        if ((msr_hv || !env->has_hv_mode) && !(addr >> 63)) {
+        if (cpu->vhyp) {
+            /*
+             * In virtual hypervisor mode, there's nothing to do:
+             *   EA == GPA == qemu guest address
+             */
+            return raddr;
+        } else if ((msr_hv || !env->has_hv_mode) && !(addr >> 63)) {
+            /* In HV mode, add HRMOR if top EA bit is clear */
             return raddr | env->spr[SPR_HRMOR];
-        }
+        } else if (ppc_hash64_use_vrma(env)) {
+            /* Emulated VRMA mode */
+            slb = &vrma_slbe;
+            if (build_vrma_slbe(cpu, slb) != 0) {
+                return -1;
+            }
+        } else {
+            target_ulong limit = rmls_limit(cpu);
 
-        /* Otherwise, check VPM for RMA vs VRMA */
-        if (env->spr[SPR_LPCR] & LPCR_VPM0) {
-            slb = &env->vrma_slb;
-            if (!slb->sps) {
+            /* Emulated old-style RMO mode, bounds check against RMLS */
+            if (raddr >= limit) {
                 return -1;
             }
-        } else if (raddr < env->rmls) {
-            /* RMA. Check bounds in RMLS */
             return raddr | env->spr[SPR_RMOR];
-        } else {
-            return -1;
         }
     } else {
         slb = slb_lookup(cpu, addr);
@@ -997,168 +1068,12 @@ void ppc_hash64_tlb_flush_hpte(PowerPCCPU *cpu, target_ulong ptex,
     cpu->env.tlb_need_flush = TLB_NEED_GLOBAL_FLUSH | TLB_NEED_LOCAL_FLUSH;
 }
 
-static void ppc_hash64_update_rmls(PowerPCCPU *cpu)
-{
-    CPUPPCState *env = &cpu->env;
-    uint64_t lpcr = env->spr[SPR_LPCR];
-
-    /*
-     * This is the full 4 bits encoding of POWER8. Previous
-     * CPUs only support a subset of these but the filtering
-     * is done when writing LPCR
-     */
-    switch ((lpcr & LPCR_RMLS) >> LPCR_RMLS_SHIFT) {
-    case 0x8: /* 32MB */
-        env->rmls = 0x2000000ull;
-        break;
-    case 0x3: /* 64MB */
-        env->rmls = 0x4000000ull;
-        break;
-    case 0x7: /* 128MB */
-        env->rmls = 0x8000000ull;
-        break;
-    case 0x4: /* 256MB */
-        env->rmls = 0x10000000ull;
-        break;
-    case 0x2: /* 1GB */
-        env->rmls = 0x40000000ull;
-        break;
-    case 0x1: /* 16GB */
-        env->rmls = 0x400000000ull;
-        break;
-    default:
-        /* What to do here ??? */
-        env->rmls = 0;
-    }
-}
-
-static void ppc_hash64_update_vrma(PowerPCCPU *cpu)
-{
-    CPUPPCState *env = &cpu->env;
-    const PPCHash64SegmentPageSizes *sps = NULL;
-    target_ulong esid, vsid, lpcr;
-    ppc_slb_t *slb = &env->vrma_slb;
-    uint32_t vrmasd;
-    int i;
-
-    /* First clear it */
-    slb->esid = slb->vsid = 0;
-    slb->sps = NULL;
-
-    /* Is VRMA enabled ? */
-    lpcr = env->spr[SPR_LPCR];
-    if (!(lpcr & LPCR_VPM0)) {
-        return;
-    }
-
-    /*
-     * Make one up. Mostly ignore the ESID which will not be needed
-     * for translation
-     */
-    vsid = SLB_VSID_VRMA;
-    vrmasd = (lpcr & LPCR_VRMASD) >> LPCR_VRMASD_SHIFT;
-    vsid |= (vrmasd << 4) & (SLB_VSID_L | SLB_VSID_LP);
-    esid = SLB_ESID_V;
-
-    for (i = 0; i < PPC_PAGE_SIZES_MAX_SZ; i++) {
-        const PPCHash64SegmentPageSizes *sps1 = &cpu->hash64_opts->sps[i];
-
-        if (!sps1->page_shift) {
-            break;
-        }
-
-        if ((vsid & SLB_VSID_LLP_MASK) == sps1->slb_enc) {
-            sps = sps1;
-            break;
-        }
-    }
-
-    if (!sps) {
-        error_report("Bad page size encoding esid 0x"TARGET_FMT_lx
-                     " vsid 0x"TARGET_FMT_lx, esid, vsid);
-        return;
-    }
-
-    slb->vsid = vsid;
-    slb->esid = esid;
-    slb->sps = sps;
-}
-
 void ppc_store_lpcr(PowerPCCPU *cpu, target_ulong val)
 {
+    PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu);
     CPUPPCState *env = &cpu->env;
-    uint64_t lpcr = 0;
-
-    /* Filter out bits */
-    switch (env->mmu_model) {
-    case POWERPC_MMU_64B: /* 970 */
-        if (val & 0x40) {
-            lpcr |= LPCR_LPES0;
-        }
-        if (val & 0x8000000000000000ull) {
-            lpcr |= LPCR_LPES1;
-        }
-        if (val & 0x20) {
-            lpcr |= (0x4ull << LPCR_RMLS_SHIFT);
-        }
-        if (val & 0x4000000000000000ull) {
-            lpcr |= (0x2ull << LPCR_RMLS_SHIFT);
-        }
-        if (val & 0x2000000000000000ull) {
-            lpcr |= (0x1ull << LPCR_RMLS_SHIFT);
-        }
-        env->spr[SPR_RMOR] = ((lpcr >> 41) & 0xffffull) << 26;
 
-        /*
-         * XXX We could also write LPID from HID4 here
-         * but since we don't tag any translation on it
-         * it doesn't actually matter
-         *
-         * XXX For proper emulation of 970 we also need
-         * to dig HRMOR out of HID5
-         */
-        break;
-    case POWERPC_MMU_2_03: /* P5p */
-        lpcr = val & (LPCR_RMLS | LPCR_ILE |
-                      LPCR_LPES0 | LPCR_LPES1 |
-                      LPCR_RMI | LPCR_HDICE);
-        break;
-    case POWERPC_MMU_2_06: /* P7 */
-        lpcr = val & (LPCR_VPM0 | LPCR_VPM1 | LPCR_ISL | LPCR_DPFD |
-                      LPCR_VRMASD | LPCR_RMLS | LPCR_ILE |
-                      LPCR_P7_PECE0 | LPCR_P7_PECE1 | LPCR_P7_PECE2 |
-                      LPCR_MER | LPCR_TC |
-                      LPCR_LPES0 | LPCR_LPES1 | LPCR_HDICE);
-        break;
-    case POWERPC_MMU_2_07: /* P8 */
-        lpcr = val & (LPCR_VPM0 | LPCR_VPM1 | LPCR_ISL | LPCR_KBV |
-                      LPCR_DPFD | LPCR_VRMASD | LPCR_RMLS | LPCR_ILE |
-                      LPCR_AIL | LPCR_ONL | LPCR_P8_PECE0 | LPCR_P8_PECE1 |
-                      LPCR_P8_PECE2 | LPCR_P8_PECE3 | LPCR_P8_PECE4 |
-                      LPCR_MER | LPCR_TC | LPCR_LPES0 | LPCR_HDICE);
-        break;
-    case POWERPC_MMU_3_00: /* P9 */
-        lpcr = val & (LPCR_VPM1 | LPCR_ISL | LPCR_KBV | LPCR_DPFD |
-                      (LPCR_PECE_U_MASK & LPCR_HVEE) | LPCR_ILE | LPCR_AIL |
-                      LPCR_UPRT | LPCR_EVIRT | LPCR_ONL | LPCR_HR | LPCR_LD |
-                      (LPCR_PECE_L_MASK & (LPCR_PDEE | LPCR_HDEE | LPCR_EEE |
-                      LPCR_DEE | LPCR_OEE)) | LPCR_MER | LPCR_GTSE | LPCR_TC |
-                      LPCR_HEIC | LPCR_LPES0 | LPCR_HVICE | LPCR_HDICE);
-        /*
-         * If we have a virtual hypervisor, we need to bring back RMLS. It
-         * doesn't exist on an actual P9 but that's all we know how to
-         * configure with softmmu at the moment
-         */
-        if (cpu->vhyp) {
-            lpcr |= (val & LPCR_RMLS);
-        }
-        break;
-    default:
-        ;
-    }
-    env->spr[SPR_LPCR] = lpcr;
-    ppc_hash64_update_rmls(cpu);
-    ppc_hash64_update_vrma(cpu);
+    env->spr[SPR_LPCR] = val & pcc->lpcr_mask;
 }
 
 void helper_store_lpcr(CPUPPCState *env, target_ulong val)
diff --git a/target/ppc/translate.c b/target/ppc/translate.c
index 36fa27367c..127c82a24e 100644
--- a/target/ppc/translate.c
+++ b/target/ppc/translate.c
@@ -1938,15 +1938,17 @@ static void gen_rlwinm(DisasContext *ctx)
         me += 32;
 #endif
         mask = MASK(mb, me);
-        if (sh == 0) {
-            tcg_gen_andi_tl(t_ra, t_rs, mask);
-        } else if (mask <= 0xffffffffu) {
-            TCGv_i32 t0 = tcg_temp_new_i32();
-            tcg_gen_trunc_tl_i32(t0, t_rs);
-            tcg_gen_rotli_i32(t0, t0, sh);
-            tcg_gen_andi_i32(t0, t0, mask);
-            tcg_gen_extu_i32_tl(t_ra, t0);
-            tcg_temp_free_i32(t0);
+        if (mask <= 0xffffffffu) {
+            if (sh == 0) {
+                tcg_gen_andi_tl(t_ra, t_rs, mask);
+            } else {
+                TCGv_i32 t0 = tcg_temp_new_i32();
+                tcg_gen_trunc_tl_i32(t0, t_rs);
+                tcg_gen_rotli_i32(t0, t0, sh);
+                tcg_gen_andi_i32(t0, t0, mask);
+                tcg_gen_extu_i32_tl(t_ra, t0);
+                tcg_temp_free_i32(t0);
+            }
         } else {
 #if defined(TARGET_PPC64)
             tcg_gen_deposit_i64(t_ra, t_rs, t_rs, 32, 32);
diff --git a/target/ppc/translate_init.inc.c b/target/ppc/translate_init.inc.c
index 53995f62ea..0ae145e18d 100644
--- a/target/ppc/translate_init.inc.c
+++ b/target/ppc/translate_init.inc.c
@@ -7895,25 +7895,21 @@ static void spr_write_lpcr(DisasContext *ctx, int sprn, int gprn)
 {
     gen_helper_store_lpcr(cpu_env, cpu_gpr[gprn]);
 }
-
-static void spr_write_970_hid4(DisasContext *ctx, int sprn, int gprn)
-{
-#if defined(TARGET_PPC64)
-    spr_write_generic(ctx, sprn, gprn);
-    gen_helper_store_lpcr(cpu_env, cpu_gpr[gprn]);
-#endif
-}
-
 #endif /* !defined(CONFIG_USER_ONLY) */
 
 static void gen_spr_970_lpar(CPUPPCState *env)
 {
 #if !defined(CONFIG_USER_ONLY)
-    /* Logical partitionning */
-    /* PPC970: HID4 is effectively the LPCR */
+    /*
+     * PPC970: HID4 covers things later controlled by the LPCR and
+     * RMOR in later CPUs, but with a different encoding.  We only
+     * support the 970 in "Apple mode" which has all hypervisor
+     * facilities disabled by strapping, so we can basically just
+     * ignore it
+     */
     spr_register(env, SPR_970_HID4, "HID4",
                  SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_970_hid4,
+                 &spr_read_generic, &spr_write_generic,
                  0x00000000);
 #endif
 }
@@ -8019,12 +8015,16 @@ static void gen_spr_book3s_ids(CPUPPCState *env)
                  SPR_NOACCESS, SPR_NOACCESS,
                  &spr_read_generic, &spr_write_generic,
                  0x00000000);
-    spr_register_hv(env, SPR_RMOR, "RMOR",
+    spr_register_hv(env, SPR_HRMOR, "HRMOR",
                  SPR_NOACCESS, SPR_NOACCESS,
                  SPR_NOACCESS, SPR_NOACCESS,
                  &spr_read_generic, &spr_write_generic,
                  0x00000000);
-    spr_register_hv(env, SPR_HRMOR, "HRMOR",
+}
+
+static void gen_spr_rmor(CPUPPCState *env)
+{
+    spr_register_hv(env, SPR_RMOR, "RMOR",
                  SPR_NOACCESS, SPR_NOACCESS,
                  SPR_NOACCESS, SPR_NOACCESS,
                  &spr_read_generic, &spr_write_generic,
@@ -8476,6 +8476,8 @@ POWERPC_FAMILY(POWER5P)(ObjectClass *oc, void *data)
                     (1ull << MSR_DR) |
                     (1ull << MSR_PMM) |
                     (1ull << MSR_RI);
+    pcc->lpcr_mask = LPCR_RMLS | LPCR_ILE | LPCR_LPES0 | LPCR_LPES1 |
+        LPCR_RMI | LPCR_HDICE;
     pcc->mmu_model = POWERPC_MMU_2_03;
 #if defined(CONFIG_SOFTMMU)
     pcc->handle_mmu_fault = ppc_hash64_handle_mmu_fault;
@@ -8492,44 +8494,6 @@ POWERPC_FAMILY(POWER5P)(ObjectClass *oc, void *data)
     pcc->l1_icache_size = 0x10000;
 }
 
-/*
- * The CPU used to have a "compat" property which set the
- * compatibility mode PVR.  However, this was conceptually broken - it
- * only makes sense on the pseries machine type (otherwise the guest
- * owns the PCR and can control the compatibility mode itself).  It's
- * been replaced with the 'max-cpu-compat' property on the pseries
- * machine type.  For backwards compatibility, pseries specially
- * parses the -cpu parameter and converts old compat= parameters into
- * the appropriate machine parameters.  This stub implementation of
- * the parameter catches any uses on explicitly created CPUs.
- */
-static void getset_compat_deprecated(Object *obj, Visitor *v, const char *name,
-                                     void *opaque, Error **errp)
-{
-    QNull *null = NULL;
-
-    if (!qtest_enabled()) {
-        warn_report("CPU 'compat' property is deprecated and has no effect; "
-                    "use max-cpu-compat machine property instead");
-    }
-    visit_type_null(v, name, &null, NULL);
-    qobject_unref(null);
-}
-
-static const PropertyInfo ppc_compat_deprecated_propinfo = {
-    .name = "str",
-    .description = "compatibility mode (deprecated)",
-    .get = getset_compat_deprecated,
-    .set = getset_compat_deprecated,
-};
-static Property powerpc_servercpu_properties[] = {
-    {
-        .name = "compat",
-        .info = &ppc_compat_deprecated_propinfo,
-    },
-    DEFINE_PROP_END_OF_LIST(),
-};
-
 static void init_proc_POWER7(CPUPPCState *env)
 {
     /* Common Registers */
@@ -8539,6 +8503,7 @@ static void init_proc_POWER7(CPUPPCState *env)
 
     /* POWER7 Specific Registers */
     gen_spr_book3s_ids(env);
+    gen_spr_rmor(env);
     gen_spr_amr(env);
     gen_spr_book3s_purr(env);
     gen_spr_power5p_common(env);
@@ -8611,7 +8576,6 @@ POWERPC_FAMILY(POWER7)(ObjectClass *oc, void *data)
 
     dc->fw_name = "PowerPC,POWER7";
     dc->desc = "POWER7";
-    device_class_set_props(dc, powerpc_servercpu_properties);
     pcc->pvr_match = ppc_pvr_match_power7;
     pcc->pcr_mask = PCR_VEC_DIS | PCR_VSX_DIS | PCR_COMPAT_2_05;
     pcc->pcr_supported = PCR_COMPAT_2_06 | PCR_COMPAT_2_05;
@@ -8652,6 +8616,12 @@ POWERPC_FAMILY(POWER7)(ObjectClass *oc, void *data)
                     (1ull << MSR_PMM) |
                     (1ull << MSR_RI) |
                     (1ull << MSR_LE);
+    pcc->lpcr_mask = LPCR_VPM0 | LPCR_VPM1 | LPCR_ISL | LPCR_DPFD |
+        LPCR_VRMASD | LPCR_RMLS | LPCR_ILE |
+        LPCR_P7_PECE0 | LPCR_P7_PECE1 | LPCR_P7_PECE2 |
+        LPCR_MER | LPCR_TC |
+        LPCR_LPES0 | LPCR_LPES1 | LPCR_HDICE;
+    pcc->lpcr_pm = LPCR_P7_PECE0 | LPCR_P7_PECE1 | LPCR_P7_PECE2;
     pcc->mmu_model = POWERPC_MMU_2_06;
 #if defined(CONFIG_SOFTMMU)
     pcc->handle_mmu_fault = ppc_hash64_handle_mmu_fault;
@@ -8668,7 +8638,6 @@ POWERPC_FAMILY(POWER7)(ObjectClass *oc, void *data)
     pcc->l1_dcache_size = 0x8000;
     pcc->l1_icache_size = 0x8000;
     pcc->interrupts_big_endian = ppc_cpu_interrupts_big_endian_lpcr;
-    pcc->lpcr_pm = LPCR_P7_PECE0 | LPCR_P7_PECE1 | LPCR_P7_PECE2;
 }
 
 static void init_proc_POWER8(CPUPPCState *env)
@@ -8680,6 +8649,7 @@ static void init_proc_POWER8(CPUPPCState *env)
 
     /* POWER8 Specific Registers */
     gen_spr_book3s_ids(env);
+    gen_spr_rmor(env);
     gen_spr_amr(env);
     gen_spr_iamr(env);
     gen_spr_book3s_purr(env);
@@ -8776,7 +8746,6 @@ POWERPC_FAMILY(POWER8)(ObjectClass *oc, void *data)
 
     dc->fw_name = "PowerPC,POWER8";
     dc->desc = "POWER8";
-    device_class_set_props(dc, powerpc_servercpu_properties);
     pcc->pvr_match = ppc_pvr_match_power8;
     pcc->pcr_mask = PCR_TM_DIS | PCR_COMPAT_2_06 | PCR_COMPAT_2_05;
     pcc->pcr_supported = PCR_COMPAT_2_07 | PCR_COMPAT_2_06 | PCR_COMPAT_2_05;
@@ -8804,7 +8773,7 @@ POWERPC_FAMILY(POWER8)(ObjectClass *oc, void *data)
                         PPC2_ISA205 | PPC2_ISA207S | PPC2_FP_CVT_S64 |
                         PPC2_TM | PPC2_PM_ISA206;
     pcc->msr_mask = (1ull << MSR_SF) |
-                    (1ull << MSR_SHV) |
+                    (1ull << MSR_HV) |
                     (1ull << MSR_TM) |
                     (1ull << MSR_VR) |
                     (1ull << MSR_VSX) |
@@ -8823,6 +8792,13 @@ POWERPC_FAMILY(POWER8)(ObjectClass *oc, void *data)
                     (1ull << MSR_TS0) |
                     (1ull << MSR_TS1) |
                     (1ull << MSR_LE);
+    pcc->lpcr_mask = LPCR_VPM0 | LPCR_VPM1 | LPCR_ISL | LPCR_KBV |
+        LPCR_DPFD | LPCR_VRMASD | LPCR_RMLS | LPCR_ILE |
+        LPCR_AIL | LPCR_ONL | LPCR_P8_PECE0 | LPCR_P8_PECE1 |
+        LPCR_P8_PECE2 | LPCR_P8_PECE3 | LPCR_P8_PECE4 |
+        LPCR_MER | LPCR_TC | LPCR_LPES0 | LPCR_HDICE;
+    pcc->lpcr_pm = LPCR_P8_PECE0 | LPCR_P8_PECE1 | LPCR_P8_PECE2 |
+                   LPCR_P8_PECE3 | LPCR_P8_PECE4;
     pcc->mmu_model = POWERPC_MMU_2_07;
 #if defined(CONFIG_SOFTMMU)
     pcc->handle_mmu_fault = ppc_hash64_handle_mmu_fault;
@@ -8840,8 +8816,6 @@ POWERPC_FAMILY(POWER8)(ObjectClass *oc, void *data)
     pcc->l1_dcache_size = 0x8000;
     pcc->l1_icache_size = 0x8000;
     pcc->interrupts_big_endian = ppc_cpu_interrupts_big_endian_lpcr;
-    pcc->lpcr_pm = LPCR_P8_PECE0 | LPCR_P8_PECE1 | LPCR_P8_PECE2 |
-                   LPCR_P8_PECE3 | LPCR_P8_PECE4;
 }
 
 #ifdef CONFIG_SOFTMMU
@@ -8988,7 +8962,6 @@ POWERPC_FAMILY(POWER9)(ObjectClass *oc, void *data)
 
     dc->fw_name = "PowerPC,POWER9";
     dc->desc = "POWER9";
-    device_class_set_props(dc, powerpc_servercpu_properties);
     pcc->pvr_match = ppc_pvr_match_power9;
     pcc->pcr_mask = PCR_COMPAT_2_05 | PCR_COMPAT_2_06 | PCR_COMPAT_2_07;
     pcc->pcr_supported = PCR_COMPAT_3_00 | PCR_COMPAT_2_07 | PCR_COMPAT_2_06 |
@@ -9017,7 +8990,7 @@ POWERPC_FAMILY(POWER9)(ObjectClass *oc, void *data)
                         PPC2_ISA205 | PPC2_ISA207S | PPC2_FP_CVT_S64 |
                         PPC2_TM | PPC2_ISA300 | PPC2_PRCNTL;
     pcc->msr_mask = (1ull << MSR_SF) |
-                    (1ull << MSR_SHV) |
+                    (1ull << MSR_HV) |
                     (1ull << MSR_TM) |
                     (1ull << MSR_VR) |
                     (1ull << MSR_VSX) |
@@ -9034,6 +9007,14 @@ POWERPC_FAMILY(POWER9)(ObjectClass *oc, void *data)
                     (1ull << MSR_PMM) |
                     (1ull << MSR_RI) |
                     (1ull << MSR_LE);
+    pcc->lpcr_mask = LPCR_VPM1 | LPCR_ISL | LPCR_KBV | LPCR_DPFD |
+        (LPCR_PECE_U_MASK & LPCR_HVEE) | LPCR_ILE | LPCR_AIL |
+        LPCR_UPRT | LPCR_EVIRT | LPCR_ONL | LPCR_HR | LPCR_LD |
+        (LPCR_PECE_L_MASK & (LPCR_PDEE | LPCR_HDEE | LPCR_EEE |
+                             LPCR_DEE | LPCR_OEE))
+        | LPCR_MER | LPCR_GTSE | LPCR_TC |
+        LPCR_HEIC | LPCR_LPES0 | LPCR_HVICE | LPCR_HDICE;
+    pcc->lpcr_pm = LPCR_PDEE | LPCR_HDEE | LPCR_EEE | LPCR_DEE | LPCR_OEE;
     pcc->mmu_model = POWERPC_MMU_3_00;
 #if defined(CONFIG_SOFTMMU)
     pcc->handle_mmu_fault = ppc64_v3_handle_mmu_fault;
@@ -9053,7 +9034,6 @@ POWERPC_FAMILY(POWER9)(ObjectClass *oc, void *data)
     pcc->l1_dcache_size = 0x8000;
     pcc->l1_icache_size = 0x8000;
     pcc->interrupts_big_endian = ppc_cpu_interrupts_big_endian_lpcr;
-    pcc->lpcr_pm = LPCR_PDEE | LPCR_HDEE | LPCR_EEE | LPCR_DEE | LPCR_OEE;
 }
 
 #ifdef CONFIG_SOFTMMU
@@ -9198,7 +9178,6 @@ POWERPC_FAMILY(POWER10)(ObjectClass *oc, void *data)
 
     dc->fw_name = "PowerPC,POWER10";
     dc->desc = "POWER10";
-    device_class_set_props(dc, powerpc_servercpu_properties);
     pcc->pvr_match = ppc_pvr_match_power10;
     pcc->pcr_mask = PCR_COMPAT_2_05 | PCR_COMPAT_2_06 | PCR_COMPAT_2_07 |
                     PCR_COMPAT_3_00;
@@ -9228,7 +9207,7 @@ POWERPC_FAMILY(POWER10)(ObjectClass *oc, void *data)
                         PPC2_ISA205 | PPC2_ISA207S | PPC2_FP_CVT_S64 |
                         PPC2_TM | PPC2_ISA300 | PPC2_PRCNTL;
     pcc->msr_mask = (1ull << MSR_SF) |
-                    (1ull << MSR_SHV) |
+                    (1ull << MSR_HV) |
                     (1ull << MSR_TM) |
                     (1ull << MSR_VR) |
                     (1ull << MSR_VSX) |
@@ -9245,6 +9224,14 @@ POWERPC_FAMILY(POWER10)(ObjectClass *oc, void *data)
                     (1ull << MSR_PMM) |
                     (1ull << MSR_RI) |
                     (1ull << MSR_LE);
+    pcc->lpcr_mask = LPCR_VPM1 | LPCR_ISL | LPCR_KBV | LPCR_DPFD |
+        (LPCR_PECE_U_MASK & LPCR_HVEE) | LPCR_ILE | LPCR_AIL |
+        LPCR_UPRT | LPCR_EVIRT | LPCR_ONL | LPCR_HR | LPCR_LD |
+        (LPCR_PECE_L_MASK & (LPCR_PDEE | LPCR_HDEE | LPCR_EEE |
+                             LPCR_DEE | LPCR_OEE))
+        | LPCR_MER | LPCR_GTSE | LPCR_TC |
+        LPCR_HEIC | LPCR_LPES0 | LPCR_HVICE | LPCR_HDICE;
+    pcc->lpcr_pm = LPCR_PDEE | LPCR_HDEE | LPCR_EEE | LPCR_DEE | LPCR_OEE;
     pcc->mmu_model = POWERPC_MMU_3_00;
 #if defined(CONFIG_SOFTMMU)
     pcc->handle_mmu_fault = ppc64_v3_handle_mmu_fault;
@@ -9263,7 +9250,6 @@ POWERPC_FAMILY(POWER10)(ObjectClass *oc, void *data)
     pcc->l1_dcache_size = 0x8000;
     pcc->l1_icache_size = 0x8000;
     pcc->interrupts_big_endian = ppc_cpu_interrupts_big_endian_lpcr;
-    pcc->lpcr_pm = LPCR_PDEE | LPCR_HDEE | LPCR_EEE | LPCR_DEE | LPCR_OEE;
 }
 
 #if !defined(CONFIG_USER_ONLY)
@@ -10486,6 +10472,8 @@ static void ppc_cpu_parse_featurestr(const char *type, char *features,
         *s = '\0';
         for (i = 0; inpieces[i]; i++) {
             if (g_str_has_prefix(inpieces[i], "compat=")) {
+                warn_report_once("CPU 'compat' property is deprecated; "
+                    "use max-cpu-compat machine property instead");
                 compat_str = inpieces[i];
                 continue;
             }
diff --git a/target/s390x/ioinst.c b/target/s390x/ioinst.c
index c437a1d8c6..0e840cc579 100644
--- a/target/s390x/ioinst.c
+++ b/target/s390x/ioinst.c
@@ -347,7 +347,7 @@ typedef struct ChscResp {
     uint16_t len;
     uint16_t code;
     uint32_t param;
-    char data[0];
+    char data[];
 } QEMU_PACKED ChscResp;
 
 #define CHSC_MIN_RESP_LEN 0x0008
diff --git a/tests/docker/dockerfiles/debian-amd64.docker b/tests/docker/dockerfiles/debian-amd64.docker
index 3b860af106..0456fc7a0c 100644
--- a/tests/docker/dockerfiles/debian-amd64.docker
+++ b/tests/docker/dockerfiles/debian-amd64.docker
@@ -17,6 +17,7 @@ RUN apt update && \
         libbz2-dev \
         liblzo2-dev \
         librdmacm-dev \
+        libsasl2-dev \
         libsnappy-dev \
         libvte-dev
 
diff --git a/tests/qtest/libqos/ahci.h b/tests/qtest/libqos/ahci.h
index f05b3e5fce..44ab1104b5 100644
--- a/tests/qtest/libqos/ahci.h
+++ b/tests/qtest/libqos/ahci.h
@@ -351,7 +351,7 @@ typedef struct AHCIQState {
 typedef struct FIS {
     uint8_t fis_type;
     uint8_t flags;
-    char data[0];
+    char data[];
 } __attribute__((__packed__)) FIS;
 
 /**
diff --git a/tests/qtest/libqos/libqos-spapr.h b/tests/qtest/libqos/libqos-spapr.h
index d9c4c22343..49bd72d20b 100644
--- a/tests/qtest/libqos/libqos-spapr.h
+++ b/tests/qtest/libqos/libqos-spapr.h
@@ -12,7 +12,6 @@ void qtest_spapr_shutdown(QOSState *qs);
     "cap-cfpc=broken,"                           \
     "cap-sbbc=broken,"                           \
     "cap-ibs=broken,"                            \
-    "cap-ccf-assist=off,"                        \
-    "cap-fwnmi-mce=off"
+    "cap-ccf-assist=off,"
 
 #endif
diff --git a/ui/console.c b/ui/console.c
index 179901c35e..184e173687 100644
--- a/ui/console.c
+++ b/ui/console.c
@@ -1299,8 +1299,8 @@ static QemuConsole *new_console(DisplayState *ds, console_type_t console_type,
                              object_property_allow_set_link,
                              OBJ_PROP_LINK_STRONG,
                              &error_abort);
-    object_property_add_uint32_ptr(obj, "head",
-                                   &s->head, &error_abort);
+    object_property_add_uint32_ptr(obj, "head", &s->head,
+                                   OBJ_PROP_FLAG_READ, &error_abort);
 
     if (!active_console || ((active_console->console_type != GRAPHIC_CONSOLE) &&
         (console_type == GRAPHIC_CONSOLE))) {
diff --git a/ui/curses.c b/ui/curses.c
index 3a1b71451c..a59b23a9cf 100644
--- a/ui/curses.c
+++ b/ui/curses.c
@@ -54,13 +54,13 @@ enum maybe_keycode {
 };
 
 static DisplayChangeListener *dcl;
-static console_ch_t screen[160 * 100];
+static console_ch_t *screen;
 static WINDOW *screenpad = NULL;
 static int width, height, gwidth, gheight, invalidate;
 static int px, py, sminx, sminy, smaxx, smaxy;
 
 static const char *font_charset = "CP437";
-static cchar_t vga_to_curses[256];
+static cchar_t *vga_to_curses;
 
 static void curses_update(DisplayChangeListener *dcl,
                           int x, int y, int w, int h)
@@ -405,6 +405,8 @@ static void curses_refresh(DisplayChangeListener *dcl)
 static void curses_atexit(void)
 {
     endwin();
+    g_free(vga_to_curses);
+    g_free(screen);
 }
 
 /*
@@ -529,7 +531,7 @@ static void font_setup(void)
      * Control characters are normally non-printable, but VGA does have
      * well-known glyphs for them.
      */
-    static uint16_t control_characters[0x20] = {
+    static const uint16_t control_characters[0x20] = {
       0x0020,
       0x263a,
       0x263b,
@@ -783,6 +785,8 @@ static void curses_display_init(DisplayState *ds, DisplayOptions *opts)
     if (opts->u.curses.charset) {
         font_charset = opts->u.curses.charset;
     }
+    screen = g_new0(console_ch_t, 160 * 100);
+    vga_to_curses = g_new0(cchar_t, 256);
     curses_setup();
     curses_keyboard_setup();
     atexit(curses_atexit);
diff --git a/util/bufferiszero.c b/util/bufferiszero.c
index bfb2605466..663903553a 100644
--- a/util/bufferiszero.c
+++ b/util/bufferiszero.c
@@ -63,11 +63,11 @@ buffer_zero_int(const void *buf, size_t len)
     }
 }
 
-#if defined(CONFIG_AVX2_OPT) || defined(__SSE2__)
+#if defined(CONFIG_AVX512F_OPT) || defined(CONFIG_AVX2_OPT) || defined(__SSE2__)
 /* Do not use push_options pragmas unnecessarily, because clang
  * does not support them.
  */
-#ifdef CONFIG_AVX2_OPT
+#if defined(CONFIG_AVX512F_OPT) || defined(CONFIG_AVX2_OPT)
 #pragma GCC push_options
 #pragma GCC target("sse2")
 #endif
@@ -104,7 +104,7 @@ buffer_zero_sse2(const void *buf, size_t len)
 
     return _mm_movemask_epi8(_mm_cmpeq_epi8(t, zero)) == 0xFFFF;
 }
-#ifdef CONFIG_AVX2_OPT
+#if defined(CONFIG_AVX512F_OPT) || defined(CONFIG_AVX2_OPT)
 #pragma GCC pop_options
 #endif
 
@@ -187,18 +187,54 @@ buffer_zero_avx2(const void *buf, size_t len)
 #pragma GCC pop_options
 #endif /* CONFIG_AVX2_OPT */
 
+#ifdef CONFIG_AVX512F_OPT
+#pragma GCC push_options
+#pragma GCC target("avx512f")
+#include <immintrin.h>
+
+static bool
+buffer_zero_avx512(const void *buf, size_t len)
+{
+    /* Begin with an unaligned head of 64 bytes.  */
+    __m512i t = _mm512_loadu_si512(buf);
+    __m512i *p = (__m512i *)(((uintptr_t)buf + 5 * 64) & -64);
+    __m512i *e = (__m512i *)(((uintptr_t)buf + len) & -64);
+
+    /* Loop over 64-byte aligned blocks of 256.  */
+    while (p <= e) {
+        __builtin_prefetch(p);
+        if (unlikely(_mm512_test_epi64_mask(t, t))) {
+            return false;
+        }
+        t = p[-4] | p[-3] | p[-2] | p[-1];
+        p += 4;
+    }
+
+    t |= _mm512_loadu_si512(buf + len - 4 * 64);
+    t |= _mm512_loadu_si512(buf + len - 3 * 64);
+    t |= _mm512_loadu_si512(buf + len - 2 * 64);
+    t |= _mm512_loadu_si512(buf + len - 1 * 64);
+
+    return !_mm512_test_epi64_mask(t, t);
+
+}
+#pragma GCC pop_options
+#endif
+
+
 /* Note that for test_buffer_is_zero_next_accel, the most preferred
  * ISA must have the least significant bit.
  */
-#define CACHE_AVX2    1
-#define CACHE_SSE4    2
-#define CACHE_SSE2    4
+#define CACHE_AVX512F 1
+#define CACHE_AVX2    2
+#define CACHE_SSE4    4
+#define CACHE_SSE2    8
 
 /* Make sure that these variables are appropriately initialized when
  * SSE2 is enabled on the compiler command-line, but the compiler is
  * too old to support CONFIG_AVX2_OPT.
  */
-#ifdef CONFIG_AVX2_OPT
+#if defined(CONFIG_AVX512F_OPT) || defined(CONFIG_AVX2_OPT)
 # define INIT_CACHE 0
 # define INIT_ACCEL buffer_zero_int
 #else
@@ -211,6 +247,7 @@ buffer_zero_avx2(const void *buf, size_t len)
 
 static unsigned cpuid_cache = INIT_CACHE;
 static bool (*buffer_accel)(const void *, size_t) = INIT_ACCEL;
+static int length_to_accel = 64;
 
 static void init_accel(unsigned cache)
 {
@@ -226,10 +263,16 @@ static void init_accel(unsigned cache)
         fn = buffer_zero_avx2;
     }
 #endif
+#ifdef CONFIG_AVX512F_OPT
+    if (cache & CACHE_AVX512F) {
+        fn = buffer_zero_avx512;
+        length_to_accel = 256;
+    }
+#endif
     buffer_accel = fn;
 }
 
-#ifdef CONFIG_AVX2_OPT
+#if defined(CONFIG_AVX512F_OPT) || defined(CONFIG_AVX2_OPT)
 #include "qemu/cpuid.h"
 
 static void __attribute__((constructor)) init_cpuid_cache(void)
@@ -252,9 +295,17 @@ static void __attribute__((constructor)) init_cpuid_cache(void)
             int bv;
             __asm("xgetbv" : "=a"(bv), "=d"(d) : "c"(0));
             __cpuid_count(7, 0, a, b, c, d);
-            if ((bv & 6) == 6 && (b & bit_AVX2)) {
+            if ((bv & 0x6) == 0x6 && (b & bit_AVX2)) {
                 cache |= CACHE_AVX2;
             }
+            /* 0xe6:
+            *  XCR0[7:5] = 111b (OPMASK state, upper 256-bit of ZMM0-ZMM15
+            *                    and ZMM16-ZMM31 state are enabled by OS)
+            *  XCR0[2:1] = 11b (XMM state and YMM state are enabled by OS)
+            */
+            if ((bv & 0xe6) == 0xe6 && (b & bit_AVX512F)) {
+                cache |= CACHE_AVX512F;
+            }
         }
     }
     cpuid_cache = cache;
@@ -277,7 +328,7 @@ bool test_buffer_is_zero_next_accel(void)
 
 static bool select_accel_fn(const void *buf, size_t len)
 {
-    if (likely(len >= 64)) {
+    if (likely(len >= length_to_accel)) {
         return buffer_accel(buf, len);
     }
     return buffer_zero_int(buf, len);
diff --git a/util/module.c b/util/module.c
index 236a7bb52a..5f7896870a 100644
--- a/util/module.c
+++ b/util/module.c
@@ -19,6 +19,9 @@
 #endif
 #include "qemu/queue.h"
 #include "qemu/module.h"
+#ifdef CONFIG_MODULE_UPGRADES
+#include "qemu-version.h"
+#endif
 
 typedef struct ModuleEntry
 {
@@ -170,6 +173,9 @@ bool module_load_one(const char *prefix, const char *lib_name)
 #ifdef CONFIG_MODULES
     char *fname = NULL;
     char *exec_dir;
+#ifdef CONFIG_MODULE_UPGRADES
+    char *version_dir;
+#endif
     const char *search_dir;
     char *dirs[4];
     char *module_name;
@@ -201,6 +207,14 @@ bool module_load_one(const char *prefix, const char *lib_name)
     dirs[n_dirs++] = g_strdup_printf("%s", CONFIG_QEMU_MODDIR);
     dirs[n_dirs++] = g_strdup_printf("%s/..", exec_dir ? : "");
     dirs[n_dirs++] = g_strdup_printf("%s", exec_dir ? : "");
+
+#ifdef CONFIG_MODULE_UPGRADES
+    version_dir = g_strcanon(g_strdup(QEMU_PKGVERSION),
+                             G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "+-.~",
+                             '_');
+    dirs[n_dirs++] = g_strdup_printf("/var/run/qemu/%s", version_dir);
+#endif
+
     assert(n_dirs <= ARRAY_SIZE(dirs));
 
     g_free(exec_dir);
diff --git a/util/oslib-posix.c b/util/oslib-posix.c
index 897e8f3ba6..4dd6d7d4b4 100644
--- a/util/oslib-posix.c
+++ b/util/oslib-posix.c
@@ -466,10 +466,17 @@ static inline int get_memset_num_threads(int smp_cpus)
 static bool touch_all_pages(char *area, size_t hpagesize, size_t numpages,
                             int smp_cpus)
 {
+    static gsize initialized = 0;
     size_t numpages_per_thread, leftover;
     char *addr = area;
     int i = 0;
 
+    if (g_once_init_enter(&initialized)) {
+        qemu_mutex_init(&page_mutex);
+        qemu_cond_init(&page_cond);
+        g_once_init_leave(&initialized, 1);
+    }
+
     memset_thread_failed = false;
     threads_created_flag = false;
     memset_num_threads = get_memset_num_threads(smp_cpus);
diff --git a/util/qemu-timer.c b/util/qemu-timer.c
index ef52d28d37..d548d3c1ad 100644
--- a/util/qemu-timer.c
+++ b/util/qemu-timer.c
@@ -25,6 +25,7 @@
 #include "qemu/osdep.h"
 #include "qemu/main-loop.h"
 #include "qemu/timer.h"
+#include "qemu/lockable.h"
 #include "sysemu/replay.h"
 #include "sysemu/cpus.h"
 
@@ -186,13 +187,12 @@ bool timerlist_expired(QEMUTimerList *timer_list)
         return false;
     }
 
-    qemu_mutex_lock(&timer_list->active_timers_lock);
-    if (!timer_list->active_timers) {
-        qemu_mutex_unlock(&timer_list->active_timers_lock);
-        return false;
+    WITH_QEMU_LOCK_GUARD(&timer_list->active_timers_lock) {
+        if (!timer_list->active_timers) {
+            return false;
+        }
+        expire_time = timer_list->active_timers->expire_time;
     }
-    expire_time = timer_list->active_timers->expire_time;
-    qemu_mutex_unlock(&timer_list->active_timers_lock);
 
     return expire_time <= qemu_clock_get_ns(timer_list->clock->type);
 }
@@ -225,13 +225,12 @@ int64_t timerlist_deadline_ns(QEMUTimerList *timer_list)
      * value but ->notify_cb() is called when the deadline changes.  Therefore
      * the caller should notice the change and there is no race condition.
      */
-    qemu_mutex_lock(&timer_list->active_timers_lock);
-    if (!timer_list->active_timers) {
-        qemu_mutex_unlock(&timer_list->active_timers_lock);
-        return -1;
+    WITH_QEMU_LOCK_GUARD(&timer_list->active_timers_lock) {
+        if (!timer_list->active_timers) {
+            return -1;
+        }
+        expire_time = timer_list->active_timers->expire_time;
     }
-    expire_time = timer_list->active_timers->expire_time;
-    qemu_mutex_unlock(&timer_list->active_timers_lock);
 
     delta = expire_time - qemu_clock_get_ns(timer_list->clock->type);