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(parent: 6bf08a8) | patch
x86, AMD: Enable WC+ memory type on family 10 processors
authorBoris Ostrovsky <boris.ostrovsky@amd.com>
Tue, 29 Jan 2013 21:32:49 +0000 (16:32 -0500)
committerH. Peter Anvin <hpa@linux.intel.com>
Thu, 31 Jan 2013 21:35:38 +0000 (13:35 -0800)
commitf0322bd341fd63261527bf84afd3272bcc2e8dd3
tree40138ddb8827ab5945c8d13b5ae731bc92018443tree | snapshot
parent6bf08a8dcd1ef13e542f08fc3b1ce6cf64ae63b6commit | diff
x86, AMD: Enable WC+ memory type on family 10 processors

In some cases BIOS may not enable WC+ memory type on family 10
processors, instead converting what would be WC+ memory to CD type.
On guests using nested pages this could result in performance
degradation. This patch enables WC+.

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@amd.com>
Link: http://lkml.kernel.org/r/1359495169-23278-1-git-send-email-ostr@amd64.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
arch/x86/include/uapi/asm/msr-index.h diff | blob | history
arch/x86/kernel/cpu/amd.c diff | blob | history
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