Message ID | 20240801045907.4010984-14-mizhang@google.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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AJvYcCXmw14cBOwMFkW9EvW3NT5NT9mZ0mwAyaPKH2QLsWhCJZ+R0dL55ONozsBG8q/hT5aTzE6LnvvW26Q57CpcJjtmIF8Y X-Gm-Message-State: AOJu0YwdcqnIWXDSawAEGKWYYlbXQDI6P0QC9F8/W3ePpBHl6pBbkQTZ w4ZZrJxQkcIlMu4OdT7EdI2A1tdyT+WQUIlCTUl6tK9I6GACrty8Qj5oTNAB9OU3KWzKb6PJ49D S9F1SSA== X-Google-Smtp-Source: AGHT+IF5ZGeKkM/HeBRl1kZxTX4360lX8K5MNcIZn2sb2skkVgd4NCRm8ugb9lwNZdcMkg0PxPcK/P4Zp9sH X-Received: from mizhang-super.c.googlers.com ([35.247.89.60]) (user=mizhang job=sendgmr) by 2002:a05:6902:724:b0:e03:a2f7:72e with SMTP id 3f1490d57ef6-e0bccf824demr2951276.0.1722488375074; Wed, 31 Jul 2024 21:59:35 -0700 (PDT) Reply-To: Mingwei Zhang <mizhang@google.com> Date: Thu, 1 Aug 2024 04:58:22 +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: <20240801045907.4010984-14-mizhang@google.com> Subject: [RFC PATCH v3 13/58] KVM: x86/pmu: Register KVM_GUEST_PMI_VECTOR handler 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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diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 8c9e4281d978..f1d589c07068 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -13946,6 +13946,16 @@ int kvm_sev_es_string_io(struct kvm_vcpu *vcpu, unsigned int size, } EXPORT_SYMBOL_GPL(kvm_sev_es_string_io); +static void kvm_handle_guest_pmi(void) +{ + struct kvm_vcpu *vcpu = kvm_get_running_vcpu(); + + if (WARN_ON_ONCE(!vcpu)) + return; + + kvm_make_request(KVM_REQ_PMI, vcpu); +} + EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_entry); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_exit); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_fast_mmio); @@ -13980,12 +13990,14 @@ static int __init kvm_x86_init(void) { kvm_mmu_x86_module_init(); mitigate_smt_rsb &= boot_cpu_has_bug(X86_BUG_SMT_RSB) && cpu_smt_possible(); + x86_set_kvm_irq_handler(KVM_GUEST_PMI_VECTOR, kvm_handle_guest_pmi); return 0; } module_init(kvm_x86_init); static void __exit kvm_x86_exit(void) { + x86_set_kvm_irq_handler(KVM_GUEST_PMI_VECTOR, NULL); WARN_ON_ONCE(static_branch_unlikely(&kvm_has_noapic_vcpu)); } module_exit(kvm_x86_exit);