>-----Original Message-----
quoted text
>From: Yinghai Lu [mailto:yhlu.kernel@gmail.com] 
>Sent: Tuesday, March 25, 2008 4:09 PM
>To: H. Peter Anvin
>Cc: Ingo Molnar; Pallipadi, Venkatesh; Thomas Gleixner; Andrew 
>Morton; kernel list; Siddha, Suresh B
>Subject: Re: [PATCH] x86: pat cpu feature bit setting for known cpus
>
>On Tue, Mar 25, 2008 at 4:06 PM, H. Peter Anvin <hpa@zytor.com> wrote:
>> Yinghai Lu wrote:
>>  >>
>>  >>  By the way, I want to clarify: I didn't mean it was 
>*intended* as
>>  >>  vendor-lockin, just that it's an undesirable effect of this.
>>  >
>>  > if the PAT works, we may need to trim the memory 
>according to MTRR, right?
>>  >
>>
>>  That doesn't seem like it's specific to PAT?
>
>could page table to  set WRBACK the range that is not covered 
>by MTRR in e820..
>

Trimming of e820 memory is already done by Jesse's patch here
commit 99fc8d424bc5d80
Are you referring to similar thing?

Thanks,
Venki

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