From: Anthony Liguori <anthony@codemonkey.ws>
To: qemu-devel@nongnu.org
Cc: Sebastian Herbszt <herbszt@gmx.de>,
Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>,
Avi Kivity <avi@redhat.com>
Subject: Re: [Qemu-devel] [6392] Add BIOS fixes from KVM tree
Date: Thu, 22 Jan 2009 15:15:25 -0600 [thread overview]
Message-ID: <4978E1ED.90309@codemonkey.ws> (raw)
In-Reply-To: <20090122205314.GA5478@amt.cnet>
Marcelo Tosatti wrote:
> On Thu, Jan 22, 2009 at 01:14:32AM +0100, Carl-Daniel Hailfinger wrote:
>
>> Hi,
>>
>> I'm sorry to say that, but my tests showed that
>> 0004_kvm-bios-add-mtrr-support.patch is buggy. It reads MSR_MTRRcap
>> unconditionally which is not allowed if the CPUID features do not have
>> CPUID_MTRR set. Real hardware will #GP in that case.
>> This was found by my MSR access tracing patch.
>>
>> Please add a check for the CPUID_MTRR feature bit before reading
>> MSR_MTRRcap. Thanks.
>>
>
> Attached, can you confirm it works for you, please?
>
Please work with Sebastian on this. I'll just pull this fix in from
upstream Bochs once it's all integrated.
Regards,
Anthony Liguori
next prev parent reply other threads:[~2009-01-22 21:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-21 21:46 [Qemu-devel] [6392] Add BIOS fixes from KVM tree Anthony Liguori
2009-01-22 0:14 ` Carl-Daniel Hailfinger
2009-01-22 19:36 ` [Qemu-devel] " Sebastian Herbszt
2009-01-22 20:53 ` [Qemu-devel] " Marcelo Tosatti
2009-01-22 21:15 ` Anthony Liguori [this message]
2009-01-22 22:51 ` Sebastian Herbszt
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