[Qemu-devel] [Bug 1285708] Re: FreeBSD Guest crash on boot due to xsave instruction issue

[Chris J Arges]

$ git tag --contains 56c103ec040b1944c8866f79aa768265c0dd2986
v3.15-rc1

The patch in question is already in 3.16 / Utopic.

I can reproduce this easily in Trusty.

** Also affects: linux (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu)
       Status: Incomplete => Fix Released

** Changed in: linux (Ubuntu Trusty)
       Status: New => In Progress

** Changed in: linux (Ubuntu Trusty)
     Assignee: (unassigned) => Chris J Arges (arges)

** Changed in: linux (Ubuntu Trusty)
   Importance: Undecided => Medium

** Also affects: linux (Ubuntu Precise)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Precise)
     Assignee: (unassigned) => Chris J Arges (arges)

** Changed in: linux (Ubuntu Precise)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1285708

Title:
  FreeBSD Guest crash on boot due to xsave instruction issue

Status in QEMU:
  New
Status in qemu-kvm:
  New
Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux” source package in Precise:
  New
Status in “linux” source package in Trusty:
  In Progress

Bug description:
  When trying to boot a working FreeBSD 9.1/9.2 guest on a kvm/qemu host
  with the following command:

  kvm -m 256 -cdrom FreeBSD-9.2-RELEASE-amd64-disc1.iso -drive
  file=FreeBSD-9.2-RELEASE-amd64.qcow2,if=virtio -net nic,model=virtio
  -net user -nographic -vnc :10 -enable-kvm -balloon virtio -cpu
  core2duo,+xsave

  The FreeBSD Guest will kernel crash on boot with the following error:

  panic: CPU0 does not support X87 or SSE: 0

  When launching the guest without the cpu flags, it works just fine.

  This bug has been resolved in source:
  https://lkml.org/lkml/2014/2/22/58

  Can this fix be included in Precise ASAP!

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