From mboxrd@z Thu Jan  1 00:00:00 1970
From: Gleb Natapov <gleb@redhat.com>
Subject: Re: Bug#707257: linux-image-3.8-1-686-pae: KVM crashes with "entry
 failed, hardware error 0x80000021"
Date: Sun, 23 Jun 2013 20:36:27 +0300
Message-ID: <20130623173627.GA29980@redhat.com>
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Cc: Paolo Bonzini <pbonzini@redhat.com>,
	Ben Hutchings <ben@decadent.org.uk>, kvm@vger.kernel.org,
	707257@bugs.debian.org
To: Stefan Pietsch <stefan.pietsch@lsexperts.de>
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On Sun, Jun 23, 2013 at 06:51:30PM +0200, Stefan Pietsch wrote:
> On 23.06.2013 09:51, Gleb Natapov wrote:
> > 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.
> 
> 
> Doing this, qemu complains
> "Could not open option rom 'kvmvapic.bin': No such file or directory",
> but the virtual machine boots successful with
> emulate_invalid_guest_state=0 and emulate_invalid_guest_state=1.
> 
Hmm, I think we ate close. Can you try with upstream qemu?

> kvmvapic.bin comes with Debian package "seabios 1.7.2-3".

--
			Gleb.