kernel-packages team mailing list archive

[Paolo Bonzini <bonzini@xxxxxxx>]

You don't need "+xsave", "-cpu host" just works.

The bug is invalid. You are requesting a CPU that doesn't exist (a
core2duo that supports XSAVE), and the guest's behavior is probably not
going to be well defined.


** Changed in: qemu
       Status: New => Invalid

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

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

Status in QEMU:
  Invalid
Status in qemu-kvm:
  New
Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux” source package in Precise:
  Won't Fix
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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