linux-kernel - Re: Strange mtrrs in Aspire One

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Date:	Mon, 29 Sep 2008 18:05:51 -0700
From:	"Yinghai Lu" <yinghai@...nel.org>
To:	"J.A. Magallón" <jamagallon@....com>
Cc:	Linux-Kernel <linux-kernel@...r.kernel.org>
Subject: Re: Strange mtrrs in Aspire One

On Mon, Sep 29, 2008 at 4:57 PM, J.A. Magallón <jamagallon@....com> wrote:
> Hi all...
>
> My aspire one is giving some strange MTRR settings with rc7-git5 (and
> prevous kernels, but that is what I run now...):
>
> one:~> cat /proc/mtrr
> reg00: base=0xfffe0000 (4095MB), size= 128KB: write-protect, count=1
> reg01: base=0xfffc0000 (4095MB), size= 128KB: uncachable, count=1

could make mtrr_cleanup to support 128K gran_size

> reg02: base=0x00000000 (   0MB), size= 256MB: write-back, count=1
> reg03: base=0x10000000 ( 256MB), size= 256MB: write-back, count=1
> reg04: base=0x1f800000 ( 504MB), size=   8MB: uncachable, count=1
> reg05: base=0x1f600000 ( 502MB), size=   2MB: uncachable, count=1
> reg06: base=0x1f500000 ( 501MB), size=   1MB: uncachable, count=1

> reg07: base=0x00000000 (   0MB), size= 128KB: uncachable, count=1
..
>  BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)

last entry is really sick...

YH
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