linux-kernel - Re: [PATCH] x86/pmu_pebs: Initalize and enable PMU interrupt (PMI

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Message-ID: <174958165124.102860.1466726781633621770.b4-ty@google.com>
Date: Tue, 10 Jun 2025 12:42:15 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Sean Christopherson <seanjc@...gle.com>, Paolo Bonzini <pbonzini@...hat.com>, 
	Dapeng Mi <dapeng1.mi@...ux.intel.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Jim Mattson <jmattson@...gle.com>, Mingwei Zhang <mizhang@...gle.com>, 
	Zide Chen <zide.chen@...el.com>, Das Sandipan <Sandipan.Das@....com>, 
	Shukla Manali <Manali.Shukla@....com>, Dapeng Mi <dapeng1.mi@...el.com>
Subject: Re: [PATCH] x86/pmu_pebs: Initalize and enable PMU interrupt (PMI_VECTOR)

On Thu, 24 Apr 2025 05:22:01 +0000, Dapeng Mi wrote:
> PMU interrupt is not correctly initialized and enabled in pmu_pebs test.
> It leads to the APIC_LVTPC mask bit is never cleared after first PMI and
> all subsequential PEBS PMIs are suppressed.
> 
> Although it doesn't impact pmu_pebs test results since current pmu_pebs
> test checks PEBS records by polling instead of PMI driving, it's still an
> incorrect behavior and could cause some unexpected false positives.
> 
> [...]

Applied to kvm-x86 next, thanks!

[1/1] x86/pmu_pebs: Initalize and enable PMU interrupt (PMI_VECTOR)
      https://github.com/kvm-x86/kvm-unit-tests/commit/389dfda487f9

--
https://github.com/kvm-x86/kvm-unit-tests/tree/next