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SubjectRe: [PATCH v3 5/7] KVM: x86/pmu: Defer counter emulated overflow via pmc->prev_counter
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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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