Messages in this thread | | | Subject | RE: [PATCH] x86: pat cpu feature bit setting for known cpus | Date | Tue, 25 Mar 2008 16:38:22 -0700 | From | "Pallipadi, Venkatesh" <> |
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>-----Original Message----- >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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