From: Roedel, Joerg <Joerg.Roedel@amd.com>
Date: Thu, 6 May 2010 09:38:43 +0000 (+0200)
Subject: KVM: x86: Inject #GP with the right rip on efer writes
X-Git-Tag: v2.6.35-rc1~436^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b69e8caef5b190af48c525f6d715e7b7728a77f6;p=pandora-kernel.git

KVM: x86: Inject #GP with the right rip on efer writes

This patch fixes a bug in the KVM efer-msr write path. If a
guest writes to a reserved efer bit the set_efer function
injects the #GP directly. The architecture dependent wrmsr
function does not see this, assumes success and advances the
rip. This results in a #GP in the guest with the wrong rip.
This patch fixes this by reporting efer write errors back to
the architectural wrmsr function.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---

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