KVM: x86/svm: Clear reserved bits written to PerfEvtSeln MSRs

[linux-2.6-microblaze.git] / arch / x86 / kvm / svm / pmu.c

diff --git a/arch/x86/kvm/svm/pmu.c b/arch/x86/kvm/svm/pmu.c
index e4163f7..24eb935 100644 (file)
--- a/arch/x86/kvm/svm/pmu.c
+++ b/arch/x86/kvm/svm/pmu.c
@@ -262,12 +262,10 @@ static int amd_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
        /* MSR_EVNTSELn */
        pmc = get_gp_pmc_amd(pmu, msr, PMU_TYPE_EVNTSEL);
        if (pmc) {
-               if (data == pmc->eventsel)
-                       return 0;
-               if (!(data & pmu->reserved_bits)) {
+               data &= ~pmu->reserved_bits;
+               if (data != pmc->eventsel)
                        reprogram_gp_counter(pmc, data);
-                       return 0;
-               }
+               return 0;
        }
 
        return 1;