Message ID | 20240801045907.4010984-30-mizhang@google.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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AJvYcCVBDVfEA9y314jaZrJ173ZJpOriQTOPM5FIx+IJcRCg1v1v5ACXIWHMvCVz8H2sHg3FuAJdvDoFVn061riAr/zNTgFy X-Gm-Message-State: AOJu0YzGYg7lf4PxB2A3Tf1IekXD4Gmy/cEG0ElEqrLc5TAQxZdjFpE4 ofDs/hw5JYGZDLvF+/ou2T3kvELr+5OxV7gCleZkJD48NTYt/BcYp5bDtzDsiFW+h1V0HNouybO UlHmCug== X-Google-Smtp-Source: AGHT+IF8rIuIfSmR/4aWJNkI7c7QHFwq9CTozYEPbwuVYBVtfJNVlPByRErHPVL59wZvz91muV2Q0JVJYfDN X-Received: from mizhang-super.c.googlers.com ([34.105.13.176]) (user=mizhang job=sendgmr) by 2002:a05:6a02:c03:b0:7a0:ec69:7cb8 with SMTP id 41be03b00d2f7-7b634665ddamr2631a12.3.1722488404429; Wed, 31 Jul 2024 22:00:04 -0700 (PDT) Reply-To: Mingwei Zhang <mizhang@google.com> Date: Thu, 1 Aug 2024 04:58:38 +0000 In-Reply-To: <20240801045907.4010984-1-mizhang@google.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: <kvm.vger.kernel.org> List-Subscribe: <mailto:kvm+subscribe@vger.kernel.org> List-Unsubscribe: <mailto:kvm+unsubscribe@vger.kernel.org> Mime-Version: 1.0 References: <20240801045907.4010984-1-mizhang@google.com> X-Mailer: git-send-email 2.46.0.rc1.232.g9752f9e123-goog Message-ID: <20240801045907.4010984-30-mizhang@google.com> Subject: [RFC PATCH v3 29/58] KVM: x86/pmu: Avoid legacy vPMU code when accessing global_ctrl in passthrough vPMU From: Mingwei Zhang <mizhang@google.com> To: Sean Christopherson <seanjc@google.com>, Paolo Bonzini <pbonzini@redhat.com>, Xiong Zhang <xiong.y.zhang@intel.com>, Dapeng Mi <dapeng1.mi@linux.intel.com>, Kan Liang <kan.liang@intel.com>, Zhenyu Wang <zhenyuw@linux.intel.com>, Manali Shukla <manali.shukla@amd.com>, Sandipan Das <sandipan.das@amd.com> Cc: Jim Mattson <jmattson@google.com>, Stephane Eranian <eranian@google.com>, Ian Rogers <irogers@google.com>, Namhyung Kim <namhyung@kernel.org>, Mingwei Zhang <mizhang@google.com>, gce-passthrou-pmu-dev@google.com, Samantha Alt <samantha.alt@intel.com>, Zhiyuan Lv <zhiyuan.lv@intel.com>, Yanfei Xu <yanfei.xu@intel.com>, Like Xu <like.xu.linux@gmail.com>, Peter Zijlstra <peterz@infradead.org>, Raghavendra Rao Ananta <rananta@google.com>, kvm@vger.kernel.org, linux-perf-users@vger.kernel.org Content-Type: text/plain; charset="UTF-8" |
Series |
Mediated Passthrough vPMU 3.0 for x86
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expand
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diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c index bd94f2d67f5c..e9047051489e 100644 --- a/arch/x86/kvm/pmu.c +++ b/arch/x86/kvm/pmu.c @@ -713,7 +713,8 @@ int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info) if (pmu->global_ctrl != data) { diff = pmu->global_ctrl ^ data; pmu->global_ctrl = data; - reprogram_counters(pmu, diff); + if (!is_passthrough_pmu_enabled(vcpu)) + reprogram_counters(pmu, diff); } break; case MSR_CORE_PERF_GLOBAL_OVF_CTRL: