linux-kernel - Re: [PATCH] x86: pat cpu feature bit setting for known cpus

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Message-ID: <86802c440803251608v6f09f531x57d9688601cc84fd@mail.gmail.com>
Date:	Tue, 25 Mar 2008 16:08:50 -0700
From:	"Yinghai Lu" <yhlu.kernel@...il.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	"Ingo Molnar" <mingo@...e.hu>,
	"Venki Pallipadi" <venkatesh.pallipadi@...el.com>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	"kernel list" <linux-kernel@...r.kernel.org>,
	suresh.b.siddha@...el.com
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@...or.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..

YH
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