RE: [Xen-devel] [PATCH] Check AMD SYSCFG DramModEn bit for MTRR configuration

["Huang2, Wei" <Wei.Huang2@xxxxxxx>]

This patch has some problem on SMP system. I am creating another one. Sorry...

-Wei

-----Original Message-----
From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Wei Huang
Sent: Tuesday, March 01, 2011 3:12 PM
To: 'xen-devel@xxxxxxxxxxxxxxxxxxx'
Subject: [Xen-devel] [PATCH] Check AMD SYSCFG DramModEn bit for MTRR 
configuration

This patch checks whether SYSCFG DramModEn bit is clear by BIOS. Some buggy 
BIOS might set this bit to 1, which causes unexpected behavior on AMD 
platforms. This patch also increase family check for AMD CPUs when setting 
fixed MTRR ranges.

Signed-off-by: Wei Huang <wei.huang2@xxxxxxx>


PS: If OK, please apply it to both xen-4.1 and xen-4.0 trees.



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