Messages in this thread | | | Date | Thu, 22 Sep 2022 22:30:39 +0000 | From | Sean Christopherson <> | Subject | Re: [PATCH v3 1/7] KVM: x86/pmu: Avoid setting BIT_ULL(-1) to pmu->host_cross_mapped_mask |
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On Wed, Aug 31, 2022, Like Xu wrote: > + hw_idx = pmc->perf_event->hw.idx; > + /* make it a little less dependent on perf's exact behavior */
Reworded this to explain how a negative value can be encountered.
> + if (hw_idx != pmc->idx && hw_idx > -1) > + pmu->host_cross_mapped_mask |= BIT_ULL(hw_idx); > } > }
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