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

[Paolo Bonzini <pbonzini@redhat.com>]

----- Messaggio originale -----
> Da: "Gleb Natapov" <gleb@redhat.com>
> A: "Paolo Bonzini" <pbonzini@redhat.com>
> Cc: "Jun'ichi Nomura" <j-nomura@ce.jp.nec.com>, kvm@vger.kernel.org
> Inviato: Martedì, 7 maggio 2013 17:04:15
> Oggetto: Re: regression in v3.9? a guest stuck in BIOS if emulate_invalid_guest_state=Y
> 
> On Tue, May 07, 2013 at 04:46:22PM +0200, Paolo Bonzini wrote:
> > 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?
> > 
> Heh, good call, actually he uses sgabios. It is right there in the output :).
> Need to try that.

sgabios is in addition to vgabios, not instead of it.

Paolo