Get fixed PMC is unnecessary if fixed counter configuration have no changed in KVM Guest. Signed-off-by: Luwei Kang <luwei.kang@xxxxxxxxx> --- arch/x86/kvm/pmu_intel.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/x86/kvm/pmu_intel.c b/arch/x86/kvm/pmu_intel.c index 5ab4a36..f896462 100644 --- a/arch/x86/kvm/pmu_intel.c +++ b/arch/x86/kvm/pmu_intel.c @@ -44,11 +44,10 @@ static void reprogram_fixed_counters(struct kvm_pmu *pmu, u64 data) u8 old_ctrl = fixed_ctrl_field(pmu->fixed_ctr_ctrl, i); struct kvm_pmc *pmc; - pmc = get_fixed_pmc(pmu, MSR_CORE_PERF_FIXED_CTR0 + i); - if (old_ctrl == new_ctrl) continue; + pmc = get_fixed_pmc(pmu, MSR_CORE_PERF_FIXED_CTR0 + i); reprogram_fixed_counter(pmc, new_ctrl, i); } -- 1.8.3.1
