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KVM: x86/vPMU: reset pmc->counter to 0 for pmu fixed_counters 

To avoid semantic inconsistency, the fixed_counters in Intel vPMU
need to be reset to 0 in intel_pmu_reset() as gp_counters does.

Signed-off-by: Like Xu <like.xu@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Like Xu 2019-07-17 10:51:18 +08:00 committed by Paolo Bonzini
parent 6694e48012
commit 4d1a082da9
1 changed files with 8 additions and 3 deletions
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11
arch/x86/kvm/vmx/pmu_intel.c
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@ -337,17 +337,22 @@ static void intel_pmu_init(struct kvm_vcpu *vcpu)
static void intel_pmu_reset(struct kvm_vcpu *vcpu)
{
struct kvm_pmu *pmu = vcpu_to_pmu(vcpu);
struct kvm_pmc *pmc = NULL;
int i;
for (i = 0; i < INTEL_PMC_MAX_GENERIC; i++) {
struct kvm_pmc *pmc = &pmu->gp_counters[i];
pmc = &pmu->gp_counters[i];
pmc_stop_counter(pmc);
pmc->counter = pmc->eventsel = 0;
}
for (i = 0; i < INTEL_PMC_MAX_FIXED; i++)
pmc_stop_counter(&pmu->fixed_counters[i]);
for (i = 0; i < INTEL_PMC_MAX_FIXED; i++) {
pmc = &pmu->fixed_counters[i];
pmc_stop_counter(pmc);
pmc->counter = 0;
}
pmu->fixed_ctr_ctrl = pmu->global_ctrl = pmu->global_status =
pmu->global_ovf_ctrl = 0;