Re: [PATCH 0/2] KVM: x86/pmu: Fix a fixed PMC event filter bypass bug
From: Sean Christopherson
Date: Tue Jun 09 2026 - 12:45:58 EST
On Wed, 03 Jun 2026 16:19:03 -0700, Sean Christopherson wrote:
> Fix a bug reported by Sashiko, where KVM will effectively ignore PMU event
> filters for fixed counters if FIXED_CTR_CTRL is changing, but enable bits
> for denied counters are NOT changing.
>
> Sean Christopherson (2):
> KVM: x86/pmu: Use hardware value when reprogramming for FIXED_CTR_CTRL
> changes
> KVM: selftests: Add regression test for mediated PMU fixed counter
> filter bug
>
> [...]
Applied to kvm-x86 misc, thanks!
[1/2] KVM: x86/pmu: Use hardware value when reprogramming for FIXED_CTR_CTRL changes
https://github.com/kvm-x86/linux/commit/9c6e2463c9f3
[2/2] KVM: selftests: Add regression test for mediated PMU fixed counter filter bug
https://github.com/kvm-x86/linux/commit/2c725bd2802f
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https://github.com/kvm-x86/linux/tree/next