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Message-ID: <86802c440805051042g25e69205tbeb348a63fb1c51e@mail.gmail.com>
Date: Mon, 5 May 2008 10:42:08 -0700
From: "Yinghai Lu" <yhlu.kernel@gmail.com>
To: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>
Subject: Re: [git head] Should X86_PAT really default to yes?
Cc: "Frans Pop" <elendil@planet.nl>, "Barnes, Jesse" <jesse.barnes@intel.com>,
       linux-kernel@vger.kernel.org, "Ingo Molnar" <mingo@elte.hu>,
       "Packard, Keith" <keith.packard@intel.com>
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On Mon, May 5, 2008 at 10:00 AM, Pallipadi, Venkatesh
<venkatesh.pallipadi@intel.com> wrote:
>
>
>  >-----Original Message-----
>  >From: Frans Pop [mailto:elendil@planet.nl]
>
> >Sent: Monday, May 05, 2008 9:55 AM
>  >To: Yinghai Lu
>  >Cc: Barnes, Jesse; Pallipadi, Venkatesh;
>  >linux-kernel@vger.kernel.org; Ingo Molnar; Packard, Keith
>  >Subject: Re: [git head] Should X86_PAT really default to yes?
>  >
>
> >On Sunday 04 May 2008, Yinghai Lu wrote:
>  >> can you boot with pat=off and send out /proc/mtrr?
>  >
>  >Hmmm. Is 'pat=off' supposed to do anything?
>  >
>
>  The option for this is actually "nopat".
>
or the PAT has something wrong with WB in MTRR?

YH