Re: regression in v3.9? a guest stuck in BIOS if emulate_invalid_guest_state=Y

[Paolo Bonzini <pbonzini@redhat.com>]

Il 07/05/2013 14:06, Gleb Natapov ha scritto:
> On Tue, May 07, 2013 at 08:05:27PM +0900, Jun'ichi Nomura wrote:
>> On 05/07/13 19:35, Gleb Natapov wrote:
>>> On Tue, May 07, 2013 at 06:55:23PM +0900, Jun'ichi Nomura wrote:
>>>> Hello,
>>>>
>>>> With v3.9 kernel and Nehalem CPU (i.e. unrestricted_guest=N),
>>>> a guest stuck during boot (seemingly in BIOS).
>>>> When setting emulate_invalid_guest_state=0, it does boot.
>>>> (With v3.8 kernel and older, the guest used to boot fine by default.)
>>>>
>>>> The userspace is qemu-kvm of RHEL6.
>>>> It seems the guest boots up fine with upstream qemu 1.4.1.
>>>>
>>>> Is this a kernel bug? Or is the userspace just too old to run on v3.9?
>>>>
>>>>
>>> It should work. What seabios version are you using?
>>
>> It's seabios-0.6.1.2-26.el6.
>> (and qemu-kvm-0.12.1.2-2.355.el6)
>>
> Works for me, but it looks like in your case the bios is in option rom.

What version of vgabios, too?

> What are you booting from? What's the qemu command line?
> 
> What is the output of "virsh qemu-monitor-command vm12 --hmp x/i $pc"
> when it hangs?

Paolo