[Qemu-devel] [Bug 1773753] Re: virsh start, after virsh managed save hangs and vm goes to paused state with qemu version v2.12.0-813-g5a5c383b13-dirty on powerpc

[Thomas Huth]

** Changed in: qemu
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1773753

Title:
  virsh start, after virsh managed save hangs and vm goes to paused
  state with qemu version v2.12.0-813-g5a5c383b13-dirty on powerpc

Status in QEMU:
  Fix Released

Bug description:
  Host Env:
  IBM Power8 with Fedora28 base with compiled upstream kernel, qemu, libvirt.

  Host Kernel: 4.17.0-rc5-00069-g3acf4e395260

  qemu-kvm(5a5c383b1373aeb6c87a0d6060f6c3dc7c53082b):
  v2.12.0-813-g5a5c383b13-dirty

  libvirt(4804a4db33a37f828d033733bc47f6eff5d262c3):

  Guest Kernel: 4.17.0-rc7

  Steps to recreate:
  Define a guest attached with above setup and start.
  # virsh start avocado-vt-vm1

  guest console;...
  # uname -r
  4.17.0-rc7
  address@hidden ~]# lscpu
  Architecture:        ppc64le
  Byte Order:          Little Endian
  CPU(s):              3
  On-line CPU(s) list: 0-2
  Thread(s) per core:  1
  Core(s) per socket:  1
  Socket(s):           3
  NUMA node(s):        1
  Model:               2.1 (pvr 004b 0201)
  Model name:          POWER8 (architected), altivec supported
  Hypervisor vendor:   KVM
  Virtualization type: para
  L1d cache:           64K
  L1i cache:           32K
  NUMA node0 CPU(s):   0-2

  
  # virsh managedsave avocado-vt-vm1 

  Domain avocado-vt-vm1 state saved by libvirt

  # virsh list
   Id    Name                           State
  ----------------------------------------------------

  # virsh start avocado-vt-vm1 ----Hangs forever and vm state goes to
  paused.

  
  # virsh list
   Id    Name                           State
  ----------------------------------------------------
   87    avocado-vt-vm1                 paused

  
  P:S:- with same above setup, just changing the qemu-kvm comes bydefault with 
F28 works fine.

  /usr/bin/qemu-kvm --version
  QEMU emulator version 2.11.1(qemu-2.11.1-2.fc28)

  Summary: with above other setup.
  machine type pseries-2.12 and qemu-2.11.1-2.fc28 -Works fine.

  machine type pseries-2.12/pseries-2.13 and qemu
  5a5c383b1373aeb6c87a0d6060f6c3dc7c53082b - Does not work.

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