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

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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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Roedel, Joerg 2010-05-06 11:38:43 +02:00 • committed by Avi Kivity

parent 0d945bd935

commit b69e8caef5

1 changed files with 12 additions and 19 deletions

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arch/x86/kvm/x86.c

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