add mailinglist scraper results

1 files changed, 549 insertions, 0 deletions

diff --git a/mailinglist/output_launchpad/1847440 b/mailinglist/output_launchpad/1847440
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@@ -0,0 +1,549 @@
+ppc64le: KVM guest fails to boot with an error `virtio_scsi: probe of virtio1 failed with error -22` on master
+
+PowerPC KVM Guest fails to boot on current qemu master(98b2e3c9ab3abfe476a2b02f8f51813edb90e72d), 
+
+Env:
+HW: IBM Power8
+Host Kernel: 5.4.0-rc2-00038-ge3280b54afed
+Guest Kernel: 4.13.9-300.fc27.ppc64le
+Qemu: https://github.com/qemu/qemu.git (master)
+Libvirt: 5.4.0
+
+Guest boot gets stuck:
+...
+[  OK  ] Mounted Kernel Configuration File System.
+[    7.598740] virtio-pci 0000:00:01.0: enabling device (0000 -> 0003)
+[    7.598828] virtio-pci 0000:00:01.0: virtio_pci: leaving for legacy driver
+[    7.598957] virtio-pci 0000:00:02.0: enabling device (0000 -> 0003)
+[    7.599017] virtio-pci 0000:00:02.0: virtio_pci: leaving for legacy driver
+[    7.599123] virtio-pci 0000:00:04.0: enabling device (0000 -> 0003)
+[    7.599182] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver
+[    7.620620] synth uevent: /devices/vio: failed to send uevent
+[    7.620624] vio vio: uevent: failed to send synthetic uevent
+[  OK  ] Started udev Coldplug all Devices.
+[    7.624559] audit: type=1130 audit(1570610300.990:5): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=systemd-udev-trigger comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
+[  OK  ] Reached target System Initialization.
+[  OK  ] Reached target Basic System.
+[  OK  ] Reached target Remote File Systems (Pre).
+[  OK  ] Reached target Remote File Systems.
+[    7.642961] virtio_scsi: probe of virtio1 failed with error -22
+[ ***  ] A start job is running for dev-disk…21b3519a80.device (14s / no limit)
+...
+
+
+
+git bisect, yielded a bad commit [e68cd0cb5cf49d334abe17231a1d2c28b846afa2] spapr: Render full FDT on ibm,client-architecture-support, reverting this commit boot the guest properly.
+
+git bisect start
+# good: [9e06029aea3b2eca1d5261352e695edc1e7d7b8b] Update version for v4.1.0 release
+git bisect good 9e06029aea3b2eca1d5261352e695edc1e7d7b8b
+# bad: [98b2e3c9ab3abfe476a2b02f8f51813edb90e72d] Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging
+git bisect bad 98b2e3c9ab3abfe476a2b02f8f51813edb90e72d
+# good: [56e6250ede81b4e4b4ddb623874d6c3cdad4a96d] target/arm: Convert T16, nop hints
+git bisect good 56e6250ede81b4e4b4ddb623874d6c3cdad4a96d
+# good: [5d69cbdfdd5cd6dadc9f0c986899844a0e4de703] tests/tcg: target/s390x: Test MVC
+git bisect good 5d69cbdfdd5cd6dadc9f0c986899844a0e4de703
+# good: [88112488cf228df8b7588c8aa38e16ecd0dff48e] qapi: Make check_type()'s array case a bit more obvious
+git bisect good 88112488cf228df8b7588c8aa38e16ecd0dff48e
+# good: [972bd57689f1e11311d86b290134ea2ed9c7c11e] ppc/kvm: Skip writing DPDES back when in run time state
+git bisect good 972bd57689f1e11311d86b290134ea2ed9c7c11e
+# bad: [1aba8716c8335e88b8c358002a6e1ac89f7dd258] ppc/pnv: Remove the XICSFabric Interface from the POWER9 machine
+git bisect bad 1aba8716c8335e88b8c358002a6e1ac89f7dd258
+# bad: [00ed3da9b5c2e66e796a172df3e19545462b9c90] xics: Minor fixes for XICSFabric interface
+git bisect bad 00ed3da9b5c2e66e796a172df3e19545462b9c90
+# good: [33432d7737b53c92791f90ece5dbe3b7bb1c79f5] target/ppc: introduce set_dfp{64,128}() helper functions
+git bisect good 33432d7737b53c92791f90ece5dbe3b7bb1c79f5
+# good: [f6d4c423a222f02bfa84a49c3d306d7341ec9bab] target/ppc: remove unnecessary if() around calls to set_dfp{64,128}() in DFP macros
+git bisect good f6d4c423a222f02bfa84a49c3d306d7341ec9bab
+# bad: [e68cd0cb5cf49d334abe17231a1d2c28b846afa2] spapr: Render full FDT on ibm,client-architecture-support
+git bisect bad e68cd0cb5cf49d334abe17231a1d2c28b846afa2
+# good: [c4ec08ab70bab90685d1443d6da47293e3aa312a] spapr-pci: Stop providing assigned-addresses
+git bisect good c4ec08ab70bab90685d1443d6da47293e3aa312a
+# first bad commit: [e68cd0cb5cf49d334abe17231a1d2c28b846afa2] spapr: Render full FDT on ibm,client-architecture-support
+
+
+attached vmxml.
+
+qemu commandline:
+/home/sath/qemu/ppc64-softmmu/qemu-system-ppc64 -name guest=vm1,debug-threads=on -S -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-19-vm1/master-key.aes -machine pseries-4.2,accel=kvm,usb=off,dump-guest-core=off -m 81920 -overcommit mem-lock=off -smp 512,sockets=1,cores=128,threads=4 -uuid fd4a5d54-0216-490e-82d2-1d4e89683b3d -display none -no-user-config -nodefaults -chardev socket,id=charmonitor,fd=24,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -boot strict=on -device qemu-xhci,id=usb,bus=pci.0,addr=0x3 -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x2 -drive file=/home/sath/tests/data/avocado-vt/images/jeos-27-ppc64le_vm1.qcow2,format=qcow2,if=none,id=drive-scsi0-0-0-0 -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,device_id=drive-scsi0-0-0-0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=1 -netdev tap,fd=26,id=hostnet0,vhost=on,vhostfd=27 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:e6:df:24,bus=pci.0,addr=0x1 -chardev pty,id=charserial0 -device spapr-vty,chardev=charserial0,id=serial0,reg=0x30000000 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 -M pseries,ic-mode=xics -msg timestamp=on
+
+
+
+On Thu, Oct 10, 2019 at 07:16:49AM -0000, Launchpad Bug Tracker wrote:
+> You have been subscribed to a public bug by Satheesh Rajendran (sathnaga):
+> 
+> PowerPC KVM Guest fails to boot on current qemu master, bad commit:
+> e68cd0cb5cf49d334abe17231a1d2c28b846afa2
+> 
+> Env:
+> HW: IBM Power9
+> Host Kernel: 5.4.0-rc2-00038-ge3280b54afed
+> Guest Kernel: 4.13.9-300.fc27.ppc64le
+> Qemu: https://github.com/qemu/qemu.git (master)
+> Libvirt: 5.4.0
+> 
+> Guest boot gets stuck:
+> ...
+> [  OK  ] Mounted Kernel Configuration File System.
+> [    7.598740] virtio-pci 0000:00:01.0: enabling device (0000 -> 0003)
+> [    7.598828] virtio-pci 0000:00:01.0: virtio_pci: leaving for legacy driver
+> [    7.598957] virtio-pci 0000:00:02.0: enabling device (0000 -> 0003)
+> [    7.599017] virtio-pci 0000:00:02.0: virtio_pci: leaving for legacy driver
+> [    7.599123] virtio-pci 0000:00:04.0: enabling device (0000 -> 0003)
+> [    7.599182] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver
+> [    7.620620] synth uevent: /devices/vio: failed to send uevent
+> [    7.620624] vio vio: uevent: failed to send synthetic uevent
+> [  OK  ] Started udev Coldplug all Devices.
+> [    7.624559] audit: type=1130 audit(1570610300.990:5): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=systemd-udev-trigger comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
+> [  OK  ] Reached target System Initialization.
+> [  OK  ] Reached target Basic System.
+> [  OK  ] Reached target Remote File Systems (Pre).
+> [  OK  ] Reached target Remote File Systems.
+> [    7.642961] virtio_scsi: probe of virtio1 failed with error -22
+> [ ***  ] A start job is running for dev-disk…21b3519a80.device (14s / no limit)
+> ...
+> 
+> git bisect, yielded a bad commit
+> [e68cd0cb5cf49d334abe17231a1d2c28b846afa2] spapr: Render full FDT on ibm
+> ,client-architecture-support, reverting this commit boot the guest
+> properly.
+> 
+> git bisect start
+> # good: [9e06029aea3b2eca1d5261352e695edc1e7d7b8b] Update version for v4.1.0 release
+> git bisect good 9e06029aea3b2eca1d5261352e695edc1e7d7b8b
+> # bad: [98b2e3c9ab3abfe476a2b02f8f51813edb90e72d] Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging
+> git bisect bad 98b2e3c9ab3abfe476a2b02f8f51813edb90e72d
+> # good: [56e6250ede81b4e4b4ddb623874d6c3cdad4a96d] target/arm: Convert T16, nop hints
+> git bisect good 56e6250ede81b4e4b4ddb623874d6c3cdad4a96d
+> # good: [5d69cbdfdd5cd6dadc9f0c986899844a0e4de703] tests/tcg: target/s390x: Test MVC
+> git bisect good 5d69cbdfdd5cd6dadc9f0c986899844a0e4de703
+> # good: [88112488cf228df8b7588c8aa38e16ecd0dff48e] qapi: Make check_type()'s array case a bit more obvious
+> git bisect good 88112488cf228df8b7588c8aa38e16ecd0dff48e
+> # good: [972bd57689f1e11311d86b290134ea2ed9c7c11e] ppc/kvm: Skip writing DPDES back when in run time state
+> git bisect good 972bd57689f1e11311d86b290134ea2ed9c7c11e
+> # bad: [1aba8716c8335e88b8c358002a6e1ac89f7dd258] ppc/pnv: Remove the XICSFabric Interface from the POWER9 machine
+> git bisect bad 1aba8716c8335e88b8c358002a6e1ac89f7dd258
+> # bad: [00ed3da9b5c2e66e796a172df3e19545462b9c90] xics: Minor fixes for XICSFabric interface
+> git bisect bad 00ed3da9b5c2e66e796a172df3e19545462b9c90
+> # good: [33432d7737b53c92791f90ece5dbe3b7bb1c79f5] target/ppc: introduce set_dfp{64,128}() helper functions
+> git bisect good 33432d7737b53c92791f90ece5dbe3b7bb1c79f5
+> # good: [f6d4c423a222f02bfa84a49c3d306d7341ec9bab] target/ppc: remove unnecessary if() around calls to set_dfp{64,128}() in DFP macros
+> git bisect good f6d4c423a222f02bfa84a49c3d306d7341ec9bab
+> # bad: [e68cd0cb5cf49d334abe17231a1d2c28b846afa2] spapr: Render full FDT on ibm,client-architecture-support
+> git bisect bad e68cd0cb5cf49d334abe17231a1d2c28b846afa2
+> # good: [c4ec08ab70bab90685d1443d6da47293e3aa312a] spapr-pci: Stop providing assigned-addresses
+> git bisect good c4ec08ab70bab90685d1443d6da47293e3aa312a
+> # first bad commit: [e68cd0cb5cf49d334abe17231a1d2c28b846afa2]
+> spapr: Render full FDT on ibm,client-architecture-support
+
+Ah, dammit, I thought we'd fixed the problems with that patch :(.
+
+> 
+> attached vmxml.
+> 
+> qemu commandline:
+> /home/sath/qemu/ppc64-softmmu/qemu-system-ppc64 -name guest=vm1,debug-threads=on -S -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-19-vm1/master-key.aes -machine pseries-4.2,accel=kvm,usb=off,dump-guest-core=off -m 81920 -overcommit mem-lock=off -smp 512,sockets=1,cores=128,threads=4 -uuid fd4a5d54-0216-490e-82d2-1d4e89683b3d -display none -no-user-config -nodefaults -chardev socket,id=charmonitor,fd=24,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -boot strict=on -device qemu-xhci,id=usb,bus=pci.0,addr=0x3 -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x2 -drive file=/home/sath/tests/data/avocado-vt/images/jeos-27-ppc64le_vm1.qcow2,format=qcow2,if=none,id=drive-scsi0-0-0-0 -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,device_id=drive-scsi0-0-0-0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=1 -netdev tap,fd=26,id=hostnet0,vhost=on,vhostfd=27 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:e6:df:24,bus=pci.0,addr=0x1 -chardev pty,id=charserial0 -device spapr-vty,chardev=charserial0,id=serial0,reg=0x30000000 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 -M pseries,ic-mode=xics -msg timestamp=on
+> 
+> ** Affects: qemu
+>      Importance: Undecided
+>          Status: New
+> 
+> 
+> ** Tags: kvm powerpcm qemu
+
+-- 
+David Gibson			| I'll have my music baroque, and my code
+david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
+				| _way_ _around_!
+http://www.ozlabs.org/~dgibson
+
+
+Ok, I just tried booting a guest with virtio-scsi and ic-mode=xics, and I wasn't able to reproduce this problem.
+
+Can you try simplifying your command line to see what options are needed to trigger this?
+
+Oh... are you using the SLOF (guest firmware) image included in the qemu tree, or is it coming from a separate package?
+
+
+If it's from a separate package, that could be the problem - it needs to be updated before that qemu patch is safe.
+
+
+Did try with the slof bin(-bios /usr/local/share/qemu/slof.bin) complied with qemu tree also, same issue persists,
+
+
+/home/sath/qemu/ppc64-softmmu/qemu-system-ppc64 \
+-name guest=vm1,debug-threads=on \
+-S \
+-object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-2-vm1/master-key.aes \
+-machine pseries-4.2,accel=kvm,usb=off,dump-guest-core=off \
+-bios /usr/local/share/qemu/slof.bin \
+-m 81920 \
+-overcommit mem-lock=off \
+-smp 512,sockets=1,cores=128,threads=4 \
+-uuid fd4a5d54-0216-490e-82d2-1d4e89683b3d \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,fd=24,server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc \
+-no-shutdown \
+-boot strict=on \
+-device qemu-xhci,id=usb,bus=pci.0,addr=0x3 \
+-device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x2 \
+-drive file=/home/sath/tests/data/avocado-vt/images/jeos-27-ppc64le_vm1.qcow2,format=qcow2,if=none,id=drive-scsi0-0-0-0 \
+-device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,device_id=drive-scsi0-0-0-0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=1 \
+-netdev tap,fd=26,id=hostnet0,vhost=on,vhostfd=27 \
+-device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:e6:df:24,bus=pci.0,addr=0x1 \
+-chardev pty,id=charserial0 \
+-device spapr-vty,chardev=charserial0,id=serial0,reg=0x30000000 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 \
+-M pseries,ic-mode=dual \
+-msg timestamp=on
+
+
+Did try with xics aswell, same issue.
+
+Host HW:
+
+#lscpu 
+Architecture:        ppc64le
+Byte Order:          Little Endian
+CPU(s):              128
+On-line CPU(s) list: 0-127
+Thread(s) per core:  4
+Core(s) per socket:  16
+Socket(s):           2
+NUMA node(s):        2
+Model:               2.3 (pvr 004e 1203)
+Model name:          POWER9, altivec supported
+CPU max MHz:         3800.0000
+CPU min MHz:         2300.0000
+L1d cache:           32K
+L1i cache:           32K
+L2 cache:            512K
+L3 cache:            10240K
+NUMA node0 CPU(s):   0-63
+NUMA node8 CPU(s):   64-127
+
+
+FW: skiboot-v6.3.2
+
+Regards,
+-Satheesh
+
+Please provide the entire guest booting output, from slof till it is stuck.
+Also please try with -smp 1. Thanks.
+
+Domain vm1 started
+Connected to domain vm1
+Escape character is ^]
+Populating /vdevice methods
+Populating /vdevice/vty@30000000
+Populating /vdevice/nvram@71000000
+Populating /pci@800000020000000
+                     00 0800 (D) : 1af4 1000    virtio [ net ]
+                     00 1000 (D) : 1af4 1004    virtio [ scsi ]
+Populating /pci@800000020000000/scsi@2
+       SCSI: Looking for devices
+          100000000000000 DISK     : "QEMU     QEMU HARDDISK    2.5+"
+                     00 1800 (D) : 1b36 000d    serial bus [ usb-xhci ]
+                     00 2000 (D) : 1af4 1002    unknown-legacy-device*
+No NVRAM common partition, re-initializing...
+Scanning USB 
+  XHCI: Initializing
+Using default console: /vdevice/vty@30000000
+     
+  Welcome to Open Firmware
+
+  Copyright (c) 2004, 2017 IBM Corporation All rights reserved.
+  This program and the accompanying materials are made available
+  under the terms of the BSD License available at
+  http://www.opensource.org/licenses/bsd-license.php
+
+
+Trying to load:  from: /pci@800000020000000/scsi@2/disk@100000000000000 ...   Successfully loaded
+
+
+OF stdout device is: /vdevice/vty@30000000
+Preparing to boot Linux version 4.13.9-300.fc27.ppc64le (<email address hidden>) (gcc version 7.2.1 20170915 (Red Hat 7.2.1-2) (GCC)) #1 SMP Mon Oct 23 13:28:27 UTC 2017
+Detected machine type: 0000000000000101
+command line: BOOT_IMAGE=/boot/vmlinuz-4.13.9-300.fc27.ppc64le root=UUID=500d2159-c568-459e-8864-1c21b3519a80 ro console=tty0 console=ttyS0,115200 console=hvc0
+Max number of cores passed to firmware: 1024 (NR_CPUS = 1024)
+Calling ibm,client-architecture-support...Node not supported 
+Node not supported 
+ not implemented
+memory layout at init:
+  memory_limit : 0000000000000000 (16 MB aligned)
+  alloc_bottom : 00000000046a0000
+  alloc_top    : 0000000010000000
+  alloc_top_hi : 0000001400000000
+  rmo_top      : 0000000010000000
+  ram_top      : 0000001400000000
+instantiating rtas at 0x000000000daf0000... done
+prom_hold_cpus: skipped
+copying OF device tree...
+Building dt strings...
+Building dt structure...
+Device tree strings 0x00000000046b0000 -> 0x00000000046b0b3f
+Device tree struct  0x00000000046c0000 -> 0x00000000046d0000
+Quiescing Open Firmware ...
+Booting Linux via __start() @ 0x0000000002000000 ...
+[    0.000000] Page sizes from device-tree:
+[    0.000000] Page size shift = 12 AP=0x0
+[    0.000000] Page size shift = 16 AP=0x5
+[    0.000000] Page size shift = 21 AP=0x1
+[    0.000000] Page size shift = 30 AP=0x2
+[    0.000000] Using radix MMU under hypervisor
+[    0.000000] Mapped range 0x0 - 0x1400000000 with 0x40000000
+[    0.000000] Process table c0000013ff000000 and radix root for kernel: c0000000014c0000
+[    0.000000] Linux version 4.13.9-300.fc27.ppc64le (<email address hidden>) (gcc version 7.2.1 20170915 (Red Hat 7.2.1-2) (GCC)) #1 SMP Mon Oct 23 13:28:27 UTC 2017
+[    0.000000] Found initrd at 0xc000000003900000:0xc0000000046967f5
+[    0.000000] Using pSeries machine description
+[    0.000000] bootconsole [udbg0] enabled
+[    0.000000] Partition configured for 2 cpus.
+[    0.000000] CPU maps initialized for 1 thread per core
+ -> smp_release_cpus()
+spinning_secondaries = 1
+ <- smp_release_cpus()
+[    0.000000] -----------------------------------------------------
+[    0.000000] ppc64_pft_size    = 0x0
+[    0.000000] phys_mem_size     = 0x1400000000
+[    0.000000] dcache_bsize      = 0x80
+[    0.000000] icache_bsize      = 0x80
+[    0.000000] cpu_features      = 0x075c7a7c18500249
+[    0.000000]   possible        = 0x5fffffff18500649
+[    0.000000]   always          = 0x0000000018100040
+[    0.000000] cpu_user_features = 0xdc0065c2 0xaee00000
+[    0.000000] mmu_features      = 0x3c006041
+[    0.000000] firmware_features = 0x00000001455a445f
+[    0.000000] -----------------------------------------------------
+[    0.000000] numa:   NODE_DATA [mem 0x13fffe7e80-0x13ffff1b7f]
+[    0.000000] PCI host bridge /pci@800000020000000  ranges:
+[    0.000000]   IO 0x0000200000000000..0x000020000000ffff -> 0x0000000000000000
+[    0.000000]  MEM 0x0000200080000000..0x00002000ffffffff -> 0x0000000080000000 
+[    0.000000]  MEM 0x0000210000000000..0x000021ffffffffff -> 0x0000210000000000 
+[    0.000000] OF: PCI: PROBE_ONLY disabled
+[    0.000000] PPC64 nvram contains 65536 bytes
+[    0.000000] Zone ranges:
+[    0.000000]   DMA      [mem 0x0000000000000000-0x00000013ffffffff]
+[    0.000000]   DMA32    empty
+[    0.000000]   Normal   empty
+[    0.000000] Movable zone start for each node
+[    0.000000] Early memory node ranges
+[    0.000000]   node   0: [mem 0x0000000000000000-0x00000013ffffffff]
+[    0.000000] Initmem setup node 0 [mem 0x0000000000000000-0x00000013ffffffff]
+[    0.000000] percpu: Embedded 3 pages/cpu @c0000013fef80000 s151064 r0 d45544 u196608
+[    0.000000] Built 1 zonelists in Node order, mobility grouping on.  Total pages: 1309440
+[    0.000000] Policy zone: DMA
+[    0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.13.9-300.fc27.ppc64le root=UUID=500d2159-c568-459e-8864-1c21b3519a80 ro console=tty0 console=ttyS0,115200 console=hvc0
+[    0.000000] PID hash table entries: 4096 (order: -1, 32768 bytes)
+[    0.000000] Memory: 83754240K/83886080K available (11968K kernel code, 1792K rwdata, 3136K rodata, 4288K init, 2405K bss, 131840K reserved, 0K cma-reserved)
+[    0.000000] random: get_random_u64 called from cache_random_seq_create+0xa0/0x180 with crng_init=0
+[    0.000000] SLUB: HWalign=128, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
+[    0.000000] ftrace: allocating 29419 entries in 11 pages
+[    0.000000] Hierarchical RCU implementation.
+[    0.000000] 	RCU restricting CPUs from NR_CPUS=1024 to nr_cpu_ids=2.
+[    0.000000] 	Tasks RCU enabled.
+[    0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
+[    0.000000] NR_IRQS: 512, nr_irqs: 512, preallocated irqs: 16
+[    0.000000] time_init: 56 bit decrementer (max: 7fffffffffffff)
+[    0.000483] clocksource: timebase: mask: 0xffffffffffffffff max_cycles: 0x761537d007, max_idle_ns: 440795202126 ns
+[    0.001327] clocksource: timebase mult[1f40000] shift[24] registered
+[    0.001868] Console: colour dummy device 80x25
+[    0.002310] console [tty0] enabled
+[    0.002588] console [hvc0] enabled
+[    0.002588] console [hvc0] enabled
+[    0.002890] bootconsole [udbg0] disabled
+[    0.002890] bootconsole [udbg0] disabled
+[    0.003238] pid_max: default: 32768 minimum: 301
+[    0.003336] Security Framework initialized
+[    0.003361] Yama: becoming mindful.
+[    0.003387] SELinux:  Initializing.
+[    0.008989] Dentry cache hash table entries: 8388608 (order: 10, 67108864 bytes)
+[    0.011926] Inode-cache hash table entries: 4194304 (order: 9, 33554432 bytes)
+[    0.012030] Mount-cache hash table entries: 131072 (order: 4, 1048576 bytes)
+[    0.012237] Mountpoint-cache hash table entries: 131072 (order: 4, 1048576 bytes)
+[    0.012576] EEH: pSeries platform initialized
+[    0.012611] POWER9 performance monitor hardware support registered
+[    0.012664] Hierarchical SRCU implementation.
+[    0.013001] smp: Bringing up secondary CPUs ...
+[    0.015623] smp: Brought up 1 node, 2 CPUs
+[    0.015662] numa: Node 0 CPUs: 0-1
+[    0.019886] devtmpfs: initialized
+[    0.024963] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
+[    0.025027] futex hash table entries: 512 (order: 0, 65536 bytes)
+[    0.025177] NET: Registered protocol family 16
+[    0.027932] EEH: No capable adapters found
+[    0.030363] cpuidle: using governor menu
+[    0.031979] pstore: using zlib compression
+[    0.032005] pstore: Registered nvram as persistent store backend
+Linux ppc64le
+#1 SMP Mon Oct 2[    0.035136] PCI: Probing PCI hardware
+[    0.035185] PCI host bridge to bus 0000:00
+[    0.035210] pci_bus 0000:00: root bus resource [io  0x10000-0x1ffff] (bus address [0x0000-0xffff])
+[    0.035260] pci_bus 0000:00: root bus resource [mem 0x200080000000-0x2000ffffffff] (bus address [0x80000000-0xffffffff])
+[    0.035318] pci_bus 0000:00: root bus resource [mem 0x210000000000-0x21ffffffffff]
+[    0.035360] pci_bus 0000:00: root bus resource [bus 00-ff]
+[    0.037044] IOMMU table initialized, virtual merging enabled
+[    0.037088] iommu: Adding device 0000:00:01.0 to group 0, default domain type -1
+[    0.037145] pci 0000:00:01.0: of_irq_parse_pci: failed with rc=134
+[    0.037190] iommu: Adding device 0000:00:02.0 to group 0, default domain type -1
+[    0.037242] pci 0000:00:02.0: of_irq_parse_pci: failed with rc=134
+[    0.037286] iommu: Adding device 0000:00:03.0 to group 0, default domain type -1
+[    0.037337] pci 0000:00:03.0: of_irq_parse_pci: failed with rc=134
+[    0.037380] iommu: Adding device 0000:00:04.0 to group 0, default domain type -1
+[    0.037442] pci 0000:00:04.0: of_irq_parse_pci: failed with rc=134
+[    0.043219] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
+[    0.043275] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages
+[    0.051951] vgaarb: loaded
+[    0.052021] SCSI subsystem initialized
+[    0.054039] usbcore: registered new interface driver usbfs
+[    0.054076] usbcore: registered new interface driver hub
+[    0.054113] usbcore: registered new device driver usb
+[    0.055226] EDAC MC: Ver: 3.0.0
+[    0.060393] NetLabel: Initializing
+[    0.060419] NetLabel:  domain hash size = 128
+[    0.060447] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
+[    0.060492] NetLabel:  unlabeled traffic allowed by default
+[    0.062836] clocksource: Switched to clocksource timebase
+[    0.073228] VFS: Disk quotas dquot_6.6.0
+[    0.073275] VFS: Dquot-cache hash table entries: 8192 (order 0, 65536 bytes)
+[    0.318455] NET: Registered protocol family 2
+[    0.318612] TCP established hash table entries: 524288 (order: 6, 4194304 bytes)
+[    0.319695] TCP bind hash table entries: 65536 (order: 4, 1048576 bytes)
+[    0.319940] TCP: Hash tables configured (established 524288 bind 65536)
+[    0.320000] UDP hash table entries: 65536 (order: 5, 2097152 bytes)
+[    0.320342] UDP-Lite hash table entries: 65536 (order: 5, 2097152 bytes)
+[    0.320713] NET: Registered protocol family 1
+[    0.320782] pci 0000:00:03.0: enabling device (0000 -> 0002)
+[    0.320897] Unpacking initramfs...
+[    0.536932] Freeing initrd memory: 13888K
+[    0.540445] rtas_flash: no firmware flash support
+[    0.540685] audit: initializing netlink subsys (disabled)
+[    0.544654] Initialise system trusted keyrings
+[    0.544693] Key type blacklist registered
+[    0.545355] audit: type=2000 audit(1571635628.541:1): state=initialized audit_enabled=0 res=1
+[    0.547068] workingset: timestamp_bits=38 max_order=21 bucket_order=0
+[    0.548074] zbud: loaded
+[    0.693638] random: fast init done
+[    0.756362] NET: Registered protocol family 38
+[    0.756416] Key type asymmetric registered
+[    0.756450] Asymmetric key parser 'x509' registered
+[    0.756535] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250)
+[    0.757780] io scheduler noop registered
+[    0.757818] io scheduler deadline registered
+[    0.757900] io scheduler cfq registered (default)
+[    0.757944] io scheduler mq-deadline registered
+[    0.758947] atomic64_test: passed
+[    0.773254] libphy: Fixed MDIO Bus: probed
+[    0.775507] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
+[    0.775573] ehci-pci: EHCI PCI platform driver
+[    0.775625] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
+[    0.775685] ohci-pci: OHCI PCI platform driver
+[    0.775734] uhci_hcd: USB Universal Host Controller Interface driver
+[    0.775841] xhci_hcd 0000:00:03.0: enabling device (0000 -> 0002)
+[    0.775953] xhci_hcd 0000:00:03.0: xHCI Host Controller
+[    0.777192] xhci_hcd 0000:00:03.0: new USB bus registered, assigned bus number 1
+[    0.777541] xhci_hcd 0000:00:03.0: ibm,query-pe-dma-windows(2026) 1800 2000 0 returned -3
+[    0.778091] xhci_hcd 0000:00:03.0: hcc params 0x00087001 hci version 0x100 quirks 0x00000010
+[    0.778169] xhci_hcd 0000:00:03.0: No msi-x/msi found and no IRQ in BIOS
+[    0.778223] xhci_hcd 0000:00:03.0: startup error -22
+[    0.778268] xhci_hcd 0000:00:03.0: USB bus 1 deregistered
+[    0.780041] xhci_hcd 0000:00:03.0: init 0000:00:03.0 fail, -22
+[    0.780101] xhci_hcd: probe of 0000:00:03.0 failed with error -22
+[    0.780174] usbcore: registered new interface driver usbserial
+[    0.780233] usbcore: registered new interface driver usbserial_generic
+[    0.780291] usbserial: USB Serial support registered for generic
+[    0.782554] mousedev: PS/2 mouse device common for all mice
+[    0.782886] rtc-generic rtc-generic: rtc core: registered rtc-generic as rtc0
+[    0.783012] device-mapper: uevent: version 1.0.3
+[    0.784846] device-mapper: ioctl: 4.37.0-ioctl (2017-09-20) initialised: <email address hidden>
+[    0.786176] hidraw: raw HID events driver (C) Jiri Kosina
+[    0.786257] usbcore: registered new interface driver usbhid
+[    0.786300] usbhid: USB HID core driver
+[    0.786388] drop_monitor: Initializing network drop monitor service
+[    0.786511] ip_tables: (C) 2000-2006 Netfilter Core Team
+[    0.786564] Initializing XFRM netlink socket
+[    0.786734] NET: Registered protocol family 10
+[    0.794930] Segment Routing with IPv6
+[    0.794983] mip6: Mobile IPv6
+[    0.795015] NET: Registered protocol family 17
+[    0.800017] registered taskstats version 1
+[    0.800060] Loading compiled-in X.509 certificates
+[    0.850282] Loaded X.509 cert 'Fedora kernel signing key: a878db2990f3e3239cc963ffd6fea115d9415954'
+[    0.850347] zswap: loaded using pool lzo/zbud
+[    0.857402] Key type big_key registered
+[    0.864367] Key type encrypted registered
+[    0.865572] rtc-generic rtc-generic: setting system clock to 2019-10-21 05:27:08 UTC (1571635628)
+[    0.866653] Freeing unused kernel memory: 4288K
+[    0.866684] This architecture does not have kernel memory protection.
+[    0.872683] systemd[1]: systemd 234 running in system mode. (+PAM +AUDIT +SELINUX +IMA -APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN default-hierarchy=hybrid)
+[    0.872817] systemd[1]: Detected virtualization kvm.
+[    0.872855] systemd[1]: Detected architecture ppc64-le.
+[    0.872885] systemd[1]: Running in initial RAM disk.
+
+Welcome to Fedora 27 (Twenty Seven) dracut-046-5.fc27 (Initramfs)!
+
+[    0.873073] systemd[1]: Set hostname to <atest-guest>.
+[    0.952006] systemd[1]: Listening on Journal Audit Socket.
+[  OK  ] Listening on Journal Audit Socket.
+[    0.952292] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
+[  OK  ] Started Dispatch Password Requests to Console Directory Watch.
+[    0.952488] systemd[1]: Reached target Paths.
+[  OK  ] Reached target Paths.
+[    0.952639] systemd[1]: Reached target Local File Systems.
+[  OK  ] Reached target Local File Systems.
+[    0.952816] systemd[1]: Reached target Timers.
+[  OK  ] Reached target Timers.
+[  OK  ] Listening on Journal Socket (/dev/log).
+[  OK  ] Listening on Journal Socket.
+[  OK  ] Reached target Swap.
+[  OK  ] Listening on udev Control Socket.
+[  OK  ] Listening on udev Kernel Socket.
+[  OK  ] Reached target Sockets.
+[  OK  ] Created slice System Slice.
+         Starting Create Volatile Files and Directories...
+         Starting Create list of required st…ce nodes for the current kernel...
+[  OK  ] Reached target Slices.
+         Starting Journal Service...
+         Starting Apply Kernel Variables...
+[  OK  ] Started Create Volatile Files and Directories.
+[  OK  ] Started Apply Kernel Variables.
+[  OK  ] Started Create list of required sta…vice nodes for the current kernel.
+         Starting Create Static Device Nodes in /dev...
+[  OK  ] Started Create Static Device Nodes in /dev.
+[    0.967752] audit: type=1130 audit(1571635628.603:2): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=systemd-tmpfiles-setup-dev comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
+         Starting udev Kernel Device Manager...
+[  OK  ] Started Journal Service.
+[    0.973468] audit: type=1130 audit(1571635628.608:3): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=systemd-journald comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
+[  OK  ] Started udev Kernel Device Manager.
+         Starting udev Coldplug all Devices...
+[    0.975851] audit: type=1130 audit(1571635628.610:4): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=systemd-udevd comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
+         Mounting Kernel Configuration File System...
+[  OK  ] Mounted Kernel Configuration File System.
+[    1.039675] virtio-pci 0000:00:01.0: enabling device (0000 -> 0003)
+[    1.039749] virtio-pci 0000:00:01.0: virtio_pci: leaving for legacy driver
+[    1.041139] synth uevent: /devices/vio: failed to send uevent
+[    1.041140] vio vio: uevent: failed to send synthetic uevent
+[  OK  ] Started udev Coldplug all Devices.
+[    1.042946] audit: type=1130 [audit(1571635628  OK  id=1 umid=0 auid=429496] Reached target R7295 ses=4294967e295 subj=kernel mote File Systemmsg='unit=systemsd-udev-trigger c (Pre).omm="systemd" ex
+e="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
+[    1.043884] virtio-pci 0000:00:02.0: enabling device (0000 -> 0003)
+[    1.043908] virtio-pci 0000:00:02.0: virtio_pci: leaving for legacy driver
+[    1.043979] virtio-pci 0000:00:04.0: enabling device (0000 -> 0003)
+[    1.044003] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver
+[  OK  ] Reached target Remote File Systems.
+[  OK  ] Reached target System Initialization.
+[  OK  ] Reached target Basic System.
+[    1.102715] virtio_scsi: probe of virtio1 failed with error -22
+[**    ] A start job is running for dev-disk…19a80.device (1min 50s / no limit)
+
+
+Same observation with smp 1 even.
+
+https://patchwork.ozlabs.org/patch/1180363/ should fix it, a SLOF update for QEMU is also posted
+https://github.com/aik/qemu/tree/qemu-slof-20191022-branch
+
+The SLOF fix has been merged 1.5 years ago, so I assume this can be marked as fixed now.
+