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KVM: x86/vPMU: Fix unnecessary signed extension for AMD PERFCTRn
authorWei Huang <wei@redhat.com>
Fri, 7 Aug 2015 19:53:30 +0000 (15:53 -0400)
committerPaolo Bonzini <pbonzini@redhat.com>
Tue, 11 Aug 2015 13:19:41 +0000 (15:19 +0200)
commit1beeb1553fec018165ce0bbc9138872175271e11
tree566babd927b9e7783f76382b62ea6c800962f0f3tree | snapshot
parentaef8a075f9c7a0a61d987d99279130b0a09ec214commit | diff
KVM: x86/vPMU: Fix unnecessary signed extension for AMD PERFCTRn

According to AMD programmer's manual, AMD PERFCTRn is 64-bit MSR which,
unlike Intel perf counters, doesn't require signed extension. This
patch removes the unnecessary conversion in SVM vPMU code when PERFCTRn
is being updated.

Signed-off-by: Wei Huang <wei@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kvm/pmu_amd.c diff | blob | history
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