Re: [PATCH v4 06/16] KVM: x86/pmu: Reprogram guest PEBS event to emulate guest PEBS counter

On Mon, Mar 29, 2021 at 01:41:27PM +0800, Like Xu wrote: > diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c > index 827886c12c16..3509b18478b9 100644 > --- a/arch/x86/kvm/pmu.c > +++ b/arch/x86/kvm/pmu.c > @@ -74,11 +74,20 @@ static void kvm_perf_overflow_intr(struct perf_event > *perf_event,

[PATCH v4 06/16] KVM: x86/pmu: Reprogram guest PEBS event to emulate guest PEBS counter

When a guest counter is configured as a PEBS counter through IA32_PEBS_ENABLE, a guest PEBS event will be reprogrammed by configuring a non-zero precision level in the perf_event_attr. The guest PEBS overflow PMI bit would be set in the guest GLOBAL_STATUS MSR when PEBS facility generates a PEBS o