linux-kernel - Re: [PATCH 2/2] x86: mtrr_cleanup try gran

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Date:	Thu, 2 Oct 2008 15:39:34 -0700
From:	"Yinghai Lu" <yinghai@...nel.org>
To:	"J.A. Magallón" <jamagallon@....com>
Cc:	Linux-Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] x86: mtrr_cleanup try gran_size to less than 1M

On Thu, Oct 2, 2008 at 3:32 PM, J.A. Magallón <jamagallon@....com> wrote:
> On Mon, 29 Sep 2008 18:54:12 -0700, Yinghai Lu <yhlu.kernel@...il.com> wrote:
>
> Also, on a 64 bit box with 4Gb, it gives this:
>
> cicely:~# cat /proc/mtrr
> reg00: base=0x00000000 (   0MB), size=4096MB: write-back, count=1
> reg01: base=0x100000000 (4096MB), size=1024MB: write-back, count=1
> reg02: base=0x140000000 (5120MB), size= 512MB: write-back, count=1
> reg03: base=0x160000000 (5632MB), size= 256MB: write-back, count=1
> reg04: base=0x80000000 (2048MB), size=2048MB: uncachable, count=1
>
boundary handling may have problem...

should have
> reg00: base=0x00000000 (   0MB), size=2048MB: write-back, count=1
> reg01: base=0x100000000 (4096MB), size=1024MB: write-back, count=1
> reg02: base=0x140000000 (5120MB), size= 512MB: write-back, count=1
> reg03: base=0x160000000 (5632MB), size= 256MB: write-back, count=1

can you post /proc/mtrr with disable_mtrr_cleanup?

YH
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