Bug#707257: linux-image-3.8-1-686-pae: KVM crashes with "entry failed, hardware error 0x80000021"

[Gleb Natapov <gleb@redhat.com>]

On Thu, Jun 20, 2013 at 07:01:49PM +0200, Stefan Pietsch wrote:
> > Can you provide the output of 25391454e73e3156202264eb3c473825afe4bc94
> > and emulate_invalid_guest_state=0. Also run "x/20i $pc-20" in qemu
> > monitor after the hang.
> 
> 
> 25391454e73e3156202264eb3c473825afe4bc94
>  emulate_invalid_guest_state=0
> 
Very interesting. Looks like somewhere during TPR access FS
register gets corrupted. Can you remove /usr/share/kvm/kvmvapic.bin
and try again? This will disable some code paths during TPR access and
will narrow down the issue.

--
			Gleb.