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


Thanks for reporting this bug.  Given the lkml.org fix, I assume this is
in fact a kernel bug, so assigning it as such.

This is presumably fix-released in utopic, but SRU-able to precise and
trusty's backport kernels.  I'm not clearn on how that process works, so
leaving it like this.

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

** No longer affects: qemu (Ubuntu)

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  FreeBSD Guest crash on boot due to xsave instruction issue

Status in QEMU:
Status in qemu-kvm:
Status in “linux” package in Ubuntu:

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

  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:

  Can this fix be included in Precise ASAP!

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