From: Joerg Roedel <joerg.roedel@amd.com>
Date: Tue, 11 Dec 2007 14:36:57 +0000 (+0100)
Subject: KVM: SVM: support writing 0 to K8 performance counter control registers
X-Git-Tag: v2.6.25-rc1~1138^2~38
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=62b9abaaf8423a3a38b938831b3b8431a6607ad8;p=pandora-kernel.git

KVM: SVM: support writing 0 to K8 performance counter control registers

This lets SVM ignore writes of the value 0 to the performance counter control
registers.  Thus enabling them will still fail in the guest, but a write of 0
which keeps them disabled is accepted.  This is required to boot Windows
Vista 64bit.

[avi: avoid fall-thru in switch statement]

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Markus Rechberger <markus.rechberger@amd.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
---

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