linux-kernel - Re: [PATCH v4 26/38] KVM: x86/pmu: Introduce eventsel

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Message-ID: <1f35b6b4-58b6-4c7e-b788-3edbb2f807f3@linux.intel.com>
Date: Thu, 15 May 2025 13:34:48 +0800
From: "Mi, Dapeng" <dapeng1.mi@...ux.intel.com>
To: Sean Christopherson <seanjc@...gle.com>,
 Mingwei Zhang <mizhang@...gle.com>
Cc: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
 Arnaldo Carvalho de Melo <acme@...nel.org>,
 Namhyung Kim <namhyung@...nel.org>, Paolo Bonzini <pbonzini@...hat.com>,
 Mark Rutland <mark.rutland@....com>,
 Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
 Jiri Olsa <jolsa@...nel.org>, Ian Rogers <irogers@...gle.com>,
 Adrian Hunter <adrian.hunter@...el.com>, Liang@...gle.com,
 Kan <kan.liang@...ux.intel.com>, "H. Peter Anvin" <hpa@...or.com>,
 linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
 kvm@...r.kernel.org, linux-kselftest@...r.kernel.org,
 Yongwei Ma <yongwei.ma@...el.com>,
 Xiong Zhang <xiong.y.zhang@...ux.intel.com>,
 Jim Mattson <jmattson@...gle.com>, Sandipan Das <sandipan.das@....com>,
 Zide Chen <zide.chen@...el.com>, Eranian Stephane <eranian@...gle.com>,
 Shukla Manali <Manali.Shukla@....com>,
 Nikunj Dadhania <nikunj.dadhania@....com>
Subject: Re: [PATCH v4 26/38] KVM: x86/pmu: Introduce eventsel_hw to prepare
 for pmu event filtering

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.