Re: [PATCH 2/2] x86: mtrr_cleanup try gran_size to less than 1M

Yinghai Lu
2008-10-02T22:39:44Z

On Thu, Oct 2, 2008 at 3:32 PM, J.A. Magallón <jamagallon@ono.com> wrote:
> On Mon, 29 Sep 2008 18:54:12 -0700, Yinghai Lu <yhlu.kernel@gmail.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