Re: [PATCH v4 26/38] KVM: x86/pmu: Introduce eventsel_hw to prepare for pmu event filtering

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To: Sean Christopherson <seanjc@xxxxxxxxxx>, Mingwei Zhang <mizhang@xxxxxxxxxx>
Subject: Re: [PATCH v4 26/38] KVM: x86/pmu: Introduce eventsel_hw to prepare for pmu event filtering
From: "Mi, Dapeng" <dapeng1.mi@xxxxxxxxxxxxxxx>
Date: Thu, 15 May 2025 13:34:48 +0800
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>, Namhyung Kim <namhyung@xxxxxxxxxx>, Paolo Bonzini <pbonzini@xxxxxxxxxx>, Mark Rutland <mark.rutland@xxxxxxx>, Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>, Jiri Olsa <jolsa@xxxxxxxxxx>, Ian Rogers <irogers@xxxxxxxxxx>, Adrian Hunter <adrian.hunter@xxxxxxxxx>, Liang@xxxxxxxxxx, Kan <kan.liang@xxxxxxxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, linux-perf-users@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, linux-kselftest@xxxxxxxxxxxxxxx, Yongwei Ma <yongwei.ma@xxxxxxxxx>, Xiong Zhang <xiong.y.zhang@xxxxxxxxxxxxxxx>, Jim Mattson <jmattson@xxxxxxxxxx>, Sandipan Das <sandipan.das@xxxxxxx>, Zide Chen <zide.chen@xxxxxxxxx>, Eranian Stephane <eranian@xxxxxxxxxx>, Shukla Manali <Manali.Shukla@xxxxxxx>, Nikunj Dadhania <nikunj.dadhania@xxxxxxx>
In-reply-to: <aCU4cHtvjwDordxW@google.com>
References: <20250324173121.1275209-1-mizhang@google.com> <20250324173121.1275209-27-mizhang@google.com> <aCU4cHtvjwDordxW@google.com>
User-agent: Mozilla Thunderbird

On 5/15/2025 8:42 AM, Sean Christopherson wrote:
> On Mon, Mar 24, 2025, Mingwei Zhang wrote:
>> -	pmu->fixed_ctr_ctrl = pmu->global_ctrl = pmu->global_status = 0;
>> +	pmu->fixed_ctr_ctrl = pmu->fixed_ctr_ctrl_hw = 0;
>> +	pmu->global_ctrl = pmu->global_status = 0;
> VMCS needs to be updated.

Yes. Thanks.

References:
- [PATCH v4 00/38] Mediated vPMU 4.0 for x86
  - From: Mingwei Zhang
- [PATCH v4 26/38] KVM: x86/pmu: Introduce eventsel_hw to prepare for pmu event filtering
  - From: Mingwei Zhang
- Re: [PATCH v4 26/38] KVM: x86/pmu: Introduce eventsel_hw to prepare for pmu event filtering
  - From: Sean Christopherson

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