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Re: [Qemu-devel] [6392] Add BIOS fixes from KVM tree
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From: |
Marcelo Tosatti |
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Subject: |
Re: [Qemu-devel] [6392] Add BIOS fixes from KVM tree |
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Date: |
Thu, 22 Jan 2009 18:53:14 -0200 |
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User-agent: |
Mutt/1.5.18 (2008-05-17) |
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?
mtrr-cpuid-check.patch
Description: Text document