group.of.nepali.translators team mailing list archive

[dann frazier <dann.frazier@xxxxxxxxxxxxx>]

** Also affects: cloud-archive
   Importance: Undecided
       Status: New

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Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/1710019

Title:
  support GICv3 ITS save/restore & migration

Status in Ubuntu Cloud Archive:
  New
Status in linux package in Ubuntu:
  In Progress
Status in qemu package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Won't Fix
Status in qemu source package in Xenial:
  Won't Fix
Status in linux source package in Zesty:
  In Progress
Status in qemu source package in Zesty:
  In Progress
Status in linux source package in Artful:
  In Progress
Status in qemu source package in Artful:
  Fix Released

Bug description:
  [Impact]
  Virtual machines on GICv3-based ARM systems cannot be saved/restored or migrated.
  This feature was added in QEMU 2.10.

  [Test Case]
  ubuntu@grotrian:~$ sudo virsh save 7936-0 7936-0.sav

  Domain 7936-0 saved to 7936-0.sav

  ubuntu@grotrian:~$ sudo virsh restore 7396-0.sav
  error: Failed to restore domain from 7396-0.sav
  error: operation failed: job: unexpectedly failed

  ubuntu@grotrian:~$ sudo tail -3 /var/log/libvirt/qemu/7936-0.log
  2017-08-10T21:26:38.217427Z qemu-system-aarch64: State blocked by non-migratable device 'arm_gicv3_its'
  2017-08-10T21:26:38.217565Z qemu-system-aarch64: load of migration failed: Invalid argument
  2017-08-10 21:26:38.217+0000: shutting down, reason=failed

  [Regression Risk]
  The kernel changes are restricted to ARM, minimizing the regression risk on other architectures. Other than one minor offset adjustment, all patches are clean cherry-picks from upstream. Tested on Cavium ThunderX and Qualcomm Centriq.

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