Re: [PATCH RESEND v3 11/11] KVM: x86/pmu: Drop amd_event_mapping[] in the KVM context

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On 20/5/2022 8:59 pm, Paolo Bonzini wrote:
On 5/18/22 15:25, Like Xu wrote:
+    if (static_call(kvm_x86_pmu_hw_event_is_unavail)(pmc))
+        return false;
+

I think it's clearer to make this positive and also not abbreviate the name; that is, hw_event_available.

Indeed.


Apart from patch 3, the series looks good.  I'll probably delay it to 5.20 so that you can confirm the SRCU issue, but it's queued.

I have checked it's protected under srcu_read_lock/unlock() for existing usages, so did JimM.

TBH, patch 3 is only inspired by the fact why the protection against kvm->arch.msr_filter does not appear for kvm->arch.pmu_event_filter, and my limited searching scope has not
yet confirmed whether it prevents the same spider.

No comments on the target kernel cycle, Capt.


Thanks,

Paolo



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