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[Xen-devel] [PATCH] MTRR: clear DramModEn bit of sys_cfg MSR

To: "'xen-devel@xxxxxxxxxxxxxxxxxxx'" <xen-devel@xxxxxxxxxxxxxxxxxxx>
From: Wei Huang <wei.huang2@xxxxxxx>
Date: Mon, 4 Apr 2011 17:23:30 -0500
Delivery-date: Mon, 04 Apr 2011 15:27:19 -0700
List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Some buggy BIOS might set sys_cfg DramModEn bit to 1, which can causeunexpected behavior on AMD platforms. This patch clears DramModEn bit.The patch was derived from upstream kernel patch (seehttps://patchwork.kernel.org/patch/11425/).


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

Attachment: amd_fix_syscfg_dram_mod_en.txt
Description: amd_fix_syscfg_dram_mod_en.txt

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