Merge tag 'misc-20230613' of https://github.com/philmd/qemu into staging

Misc patches queue

- user emulation: Preserve environment variable order
- macos/darwin/hvf: Fix build warnings, slighly optimize DCache flush
- target/i386: Minor cleanups, rename  template headers with '.inc' suffix
- target/hppa: Avoid building int_helper.o on user emulation
- hw: Add 'name' property to pca954x, export ISAParallelState, silent warnings
- hw/vfio: Trace number of bitmap dirty pages
- exec/memory: Introduce RAM_NAMED_FILE to distinct block without named backing store

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# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]

* tag 'misc-20230613' of https://github.com/philmd/qemu:
  exec/memory: Introduce RAM_NAMED_FILE flag
  hw/vfio: Add number of dirty pages to vfio_get_dirty_bitmap tracepoint
  exec/ram_addr: Return number of dirty pages in cpu_physical_memory_set_dirty_lebitmap()
  hw/char/parallel-isa: Export struct ISAParallelState
  hw/char/parallel: Export struct ParallelState
  hw/scsi/megasas: Silent GCC duplicated-cond warning
  hw/ide/ahci: Remove stray backslash
  hw/i2c: Enable an id for the pca954x devices
  target/i386: Rename helper template headers as '.h.inc'
  target/i386/helper: Shuffle do_cpu_init()
  target/i386/helper: Remove do_cpu_sipi() stub for user-mode emulation
  target/hppa/meson: Only build int_helper.o with system emulation
  accel/hvf: Report HV_DENIED error
  util/cacheflush: Avoid possible redundant dcache flush on Darwin
  util/cacheflush: Use declarations from <OSCacheControl.h> on Darwin
  cocoa: Fix warnings about invalid prototype declarations
  linux-user, bsd-user: Preserve incoming order of environment variables in the target

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

5 files changed, 76 insertions, 7 deletions

diff --git a/include/exec/cpu-common.h b/include/exec/cpu-common.h
index e5a55ede5f..87dc9a752c 100644
--- a/include/exec/cpu-common.h
+++ b/include/exec/cpu-common.h
@@ -93,6 +93,7 @@ void qemu_ram_set_uf_zeroable(RAMBlock *rb);
 bool qemu_ram_is_migratable(RAMBlock *rb);
 void qemu_ram_set_migratable(RAMBlock *rb);
 void qemu_ram_unset_migratable(RAMBlock *rb);
+bool qemu_ram_is_named_file(RAMBlock *rb);
 int qemu_ram_get_fd(RAMBlock *rb);
 
 size_t qemu_ram_pagesize(RAMBlock *block);
diff --git a/include/exec/memory.h b/include/exec/memory.h
index c3661b2276..47c2e0221c 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -232,6 +232,9 @@ typedef struct IOMMUTLBEvent {
 /* RAM that isn't accessible through normal means. */
 #define RAM_PROTECTED (1 << 8)
 
+/* RAM is an mmap-ed named file */
+#define RAM_NAMED_FILE (1 << 9)
+
 static inline void iommu_notifier_init(IOMMUNotifier *n, IOMMUNotify fn,
                                        IOMMUNotifierFlag flags,
                                        hwaddr start, hwaddr end,
diff --git a/include/exec/ram_addr.h b/include/exec/ram_addr.h
index 90a8269290..9f2e3893f5 100644
--- a/include/exec/ram_addr.h
+++ b/include/exec/ram_addr.h
@@ -334,14 +334,23 @@ static inline void cpu_physical_memory_set_dirty_range(ram_addr_t start,
 }
 
 #if !defined(_WIN32)
-static inline void cpu_physical_memory_set_dirty_lebitmap(unsigned long *bitmap,
-                                                          ram_addr_t start,
-                                                          ram_addr_t pages)
+
+/*
+ * Contrary to cpu_physical_memory_sync_dirty_bitmap() this function returns
+ * the number of dirty pages in @bitmap passed as argument. On the other hand,
+ * cpu_physical_memory_sync_dirty_bitmap() returns newly dirtied pages that
+ * weren't set in the global migration bitmap.
+ */
+static inline
+uint64_t cpu_physical_memory_set_dirty_lebitmap(unsigned long *bitmap,
+                                                ram_addr_t start,
+                                                ram_addr_t pages)
 {
     unsigned long i, j;
-    unsigned long page_number, c;
+    unsigned long page_number, c, nbits;
     hwaddr addr;
     ram_addr_t ram_addr;
+    uint64_t num_dirty = 0;
     unsigned long len = (pages + HOST_LONG_BITS - 1) / HOST_LONG_BITS;
     unsigned long hpratio = qemu_real_host_page_size() / TARGET_PAGE_SIZE;
     unsigned long page = BIT_WORD(start >> TARGET_PAGE_BITS);
@@ -369,6 +378,7 @@ static inline void cpu_physical_memory_set_dirty_lebitmap(unsigned long *bitmap,
                 if (bitmap[k]) {
                     unsigned long temp = leul_to_cpu(bitmap[k]);
 
+                    nbits = ctpopl(temp);
                     qatomic_or(&blocks[DIRTY_MEMORY_VGA][idx][offset], temp);
 
                     if (global_dirty_tracking) {
@@ -377,10 +387,12 @@ static inline void cpu_physical_memory_set_dirty_lebitmap(unsigned long *bitmap,
                                 temp);
                         if (unlikely(
                             global_dirty_tracking & GLOBAL_DIRTY_DIRTY_RATE)) {
-                            total_dirty_pages += ctpopl(temp);
+                            total_dirty_pages += nbits;
                         }
                     }
 
+                    num_dirty += nbits;
+
                     if (tcg_enabled()) {
                         qatomic_or(&blocks[DIRTY_MEMORY_CODE][idx][offset],
                                    temp);
@@ -409,9 +421,11 @@ static inline void cpu_physical_memory_set_dirty_lebitmap(unsigned long *bitmap,
         for (i = 0; i < len; i++) {
             if (bitmap[i] != 0) {
                 c = leul_to_cpu(bitmap[i]);
+                nbits = ctpopl(c);
                 if (unlikely(global_dirty_tracking & GLOBAL_DIRTY_DIRTY_RATE)) {
-                    total_dirty_pages += ctpopl(c);
+                    total_dirty_pages += nbits;
                 }
+                num_dirty += nbits;
                 do {
                     j = ctzl(c);
                     c &= ~(1ul << j);
@@ -424,6 +438,8 @@ static inline void cpu_physical_memory_set_dirty_lebitmap(unsigned long *bitmap,
             }
         }
     }
+
+    return num_dirty;
 }
 #endif /* not _WIN32 */
 
diff --git a/include/hw/char/parallel-isa.h b/include/hw/char/parallel-isa.h
new file mode 100644
index 0000000000..d24ccecf05
--- /dev/null
+++ b/include/hw/char/parallel-isa.h
@@ -0,0 +1,30 @@
+/*
+ * QEMU ISA Parallel PORT emulation
+ *
+ * Copyright (c) 2003-2005 Fabrice Bellard
+ * Copyright (c) 2007 Marko Kohtala
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#ifndef HW_PARALLEL_ISA_H
+#define HW_PARALLEL_ISA_H
+
+#include "parallel.h"
+
+#include "hw/isa/isa.h"
+#include "qom/object.h"
+
+#define TYPE_ISA_PARALLEL "isa-parallel"
+OBJECT_DECLARE_SIMPLE_TYPE(ISAParallelState, ISA_PARALLEL)
+
+struct ISAParallelState {
+    ISADevice parent_obj;
+
+    uint32_t index;
+    uint32_t iobase;
+    uint32_t isairq;
+    ParallelState state;
+};
+
+#endif /* HW_PARALLEL_ISA_H */
diff --git a/include/hw/char/parallel.h b/include/hw/char/parallel.h
index 29d2876d00..7b5a309a03 100644
--- a/include/hw/char/parallel.h
+++ b/include/hw/char/parallel.h
@@ -1,10 +1,29 @@
 #ifndef HW_PARALLEL_H
 #define HW_PARALLEL_H
 
+#include "exec/ioport.h"
+#include "exec/memory.h"
 #include "hw/isa/isa.h"
+#include "hw/irq.h"
+#include "chardev/char-fe.h"
 #include "chardev/char.h"
 
-#define TYPE_ISA_PARALLEL "isa-parallel"
+typedef struct ParallelState {
+    MemoryRegion iomem;
+    uint8_t dataw;
+    uint8_t datar;
+    uint8_t status;
+    uint8_t control;
+    qemu_irq irq;
+    int irq_pending;
+    CharBackend chr;
+    int hw_driver;
+    int epp_timeout;
+    uint32_t last_read_offset; /* For debugging */
+    /* Memory-mapped interface */
+    int it_shift;
+    PortioList portio_list;
+} ParallelState;
 
 void parallel_hds_isa_init(ISABus *bus, int n);