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[Xen-devel] RE: [Patch] [HVM] Limit MTRR virtualization for VMX guests t

To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] RE: [Patch] [HVM] Limit MTRR virtualization for VMX guests to 8 registers
From: "Kamble, Nitin A" <nitin.a.kamble@xxxxxxxxx>
Date: Fri, 17 Apr 2009 13:57:40 -0700
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Cc: "Mallick, Asit K" <asit.k.mallick@xxxxxxxxx>, "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>
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Thread-topic: [Patch] [HVM] Limit MTRR virtualization for VMX guests to 8 registers
   You are right. The problem I was trying to fix was observed on RHEL5.3 Xen, 
and I don't see that issue with the xen-unstable tree.

Thanks & Regards,
Linux Open Source Technology Center, Intel Corporation
The Mind is like a parachute; it works much better when it's open.

>-----Original Message-----
>From: Keir Fraser [mailto:keir.fraser@xxxxxxxxxxxxx]
>Sent: Friday, April 17, 2009 1:05 AM
>To: Kamble, Nitin A; xen-devel@xxxxxxxxxxxxxxxxxxx
>Subject: Re: [Patch] [HVM] Limit MTRR virtualization for VMX guests to 8
>On 16/04/2009 23:32, "Nitin A Kamble" <nitin.a.kamble@xxxxxxxxx> wrote:
>> Hi Keir,
>>   Bellow is the patch for xen-unstable tree which limits MTRR
>> for VMX guests to 8 registers. Please comment/Apply.
>mtrr_state.mtrr_cap isn't directly plumbed to guests. Guests get their own
>hardcoded virtualised value for mtrr_cap, set up in arch/x86/hvm/mtrr.c.
>physical mtrr_state.mtrr_cap is only used for interpreting physical MTRR
>info as part of PAT/MTRR virtualisation. So all looks correct to me as is.
> -- Keir

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