Messages in this thread | | | Date | Fri, 14 Oct 2022 16:08:20 +0800 | Subject | Re: [PATCH v3 5/7] KVM: x86/pmu: Defer counter emulated overflow via pmc->prev_counter | From | Like Xu <> |
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On 23/9/2022 7:59 am, Sean Christopherson wrote: > The bigger issue is that calling __kvm_perf_overflow() here can get false negatives. > If reprogramming fails due to contention, the reprogram_pmi bit will be left set > and so this check in __kvm_perf_overflow() will suppress the PMI.
I understand your motivation, and before we reprocess on "left set reprogram_pmi bit", we may need reproducible cases to cover "reprogramming fails".
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