lkml.org 
[lkml]   [2008]   [May]   [1]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateThu, 1 May 2008 14:02:01 -0700
From"Yinghai Lu" <>
SubjectRe: [PATCH] x86: mtrr cleanup for converting continuous to discrete - auto detect v2
On Thu, May 1, 2008 at 12:42 PM, H. Peter Anvin <hpa@zytor.com> wrote:
> Yinghai Lu wrote:
>
> > loop mtrr chunk_size and gran_size from 1M to 2G to find out optimal
> value.
> >
>
>  Why stopping at 2 GB?

if you select 4g for chunk size, we don't need to convert that from
continuous to discrete to make X server driver happen.

actually the code could support any chunk_size...

for example: 16 g system
orginal:
0-4g WB
3.5g-4g UC
4g-8g WB
8g-16g WB
16g-16.5g WB

if you set chunk size to 16g, and gran size <= 512M
you will get
0-16g WB
3.5g-4g UC
16g-16.5g WB

YH


\
 
 \ /
  Last update: 2008-05-01 23:05    [from the cache]
©2003-2008