From patchwork Mon May 6 05:29:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mingwei Zhang X-Patchwork-Id: 13654919 Received: from mail-pg1-f201.google.com (mail-pg1-f201.google.com [209.85.215.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 67AD0140E25 for ; Mon, 6 May 2024 05:30:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714973450; cv=none; b=EsNPXVXPPlDmyYpA4z+e6G+oz6DZi4w9VRbxgmvHyuMe9o/dBkQ8ocGBuIcHjKZwEboNpc4ihdcnhpEsexlvfAxqS/RbdACPTw3Y69EUe/uSMymoUK4vQDQEIRTyJRWSoge8qIn0QHR4elgUXvwCstWzGCYn4rfy4mIRRLAvlKQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714973450; c=relaxed/simple; bh=kQemOPD0Zydqsmtn0w+cnNnsyxjU727hdz4fooWjwfo=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=QNCcYoqTxAZXZ5wF3duwzGaL5DT65qgqRonLrSffyC51bq9TiBj2DPJU3jdvYITBP5WAsWLYe+UtUlmocCEcUcY8bqDha0lN+k5YktCzpYxm8FFNBHpPH1/YPiF+JxdX/5LQ+NZw8uXa5itJneIEvnQ3LgSMGqOkTg2PVF2ja2g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--mizhang.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=CZ5MBHEA; arc=none smtp.client-ip=209.85.215.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--mizhang.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="CZ5MBHEA" Received: by mail-pg1-f201.google.com with SMTP id 41be03b00d2f7-5d8dd488e09so2334636a12.2 for ; Sun, 05 May 2024 22:30:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1714973448; x=1715578248; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=9Dgs20dNjgAl9Yl4ETI/O5/Y7n5eoiN1wzowsGzoois=; b=CZ5MBHEACVJjouiWRaqSO4IuDijBhry+bgkmbBXV2QgX1iUtmRRBX3TJZ0WMqmtH5s xaU/DUsvtRZgrOB5TkBcAvAw7tjGKlm0KJzWAr2V5332dbt2exnMZGIcMlCAQDIyjRMj KUhVRVkDDqR8wgr5ktQC4gtTqF7ScCmSo7Nt6skFd64rxcCUoGmenyaeGtpPbHmkbA5o 0iWjeHnhUKPIn1TGl3GhxKLtiogI8b7jJnM86oJ21XenNUmfVsfYZrvSUVY7sp4MNmp0 +r91w1ZhDJL9e/333BnGOejLP+f7wSXE2T8lMaR10idhBuhVUJmy/dHBXySWdU2pWNBM 4SfQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714973448; x=1715578248; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=9Dgs20dNjgAl9Yl4ETI/O5/Y7n5eoiN1wzowsGzoois=; b=EZvbNy43rjWbf17bB0DwAJKs/FLuwEnfxJHtF+Hg2jSF+/7h0cneXmdSAcHXI5ujn4 GElPR+IP3pNrmMbapFRhh3/QZJEivmNhFppD/+1ypb0GBYlCPcbRs+lGIBcK+bt+qDrt Ac3p99hVCMFCHQj6nSY3OpipAvthCFqSpPi6dSLxqmKCSZsnQrs87n0mZhiK2FkZzJ7W jPuPTDtz+JfN89gezqOpABA256jZEbVBYuJbHB9b0TrzntJc6r8Z5tRRKghxWwc+ZbZ1 PwNs8xfYOWyaUdObiuYgNakmo2YNrvQCTLY5iZfmhBBVg2VzqDbsA79gAS+ELOvBtGZS PprQ== X-Forwarded-Encrypted: i=1; AJvYcCX8CWstmWN/cZSIEa6yiFkZlvKvCdwUgdZfRj6b/rfEfpIQC0T/gCKwrTvNqSi78ACd1xRpJq2pZkEQ2TI0+qQbhQcy X-Gm-Message-State: AOJu0YziJEdvhOiVcZb+kqfBWwUB4+dKhhnGozxZiA3OrfuoOlSCdIGz cFwrMRTqbx/NyUYZevN3iCxdXru7qqZjjpWBmL2DW3bWbLVxCoDN2fso/tqF0bJLskjuRGdv2VK 5F3PgBQ== X-Google-Smtp-Source: AGHT+IEddBveDzLs8KjlI+n90U+GWRV3jtIkb+j1aP+Aml/IbiLi1j81dg8g4Ubmb4YPqwtk2l6FE9b0Wsxm X-Received: from mizhang-super.c.googlers.com ([34.105.13.176]) (user=mizhang job=sendgmr) by 2002:a05:6a02:68f:b0:5dc:2d1c:43c6 with SMTP id ca15-20020a056a02068f00b005dc2d1c43c6mr27121pgb.9.1714973447431; Sun, 05 May 2024 22:30:47 -0700 (PDT) Reply-To: Mingwei Zhang Date: Mon, 6 May 2024 05:29:36 +0000 In-Reply-To: <20240506053020.3911940-1-mizhang@google.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240506053020.3911940-1-mizhang@google.com> X-Mailer: git-send-email 2.45.0.rc1.225.g2a3ae87e7f-goog Message-ID: <20240506053020.3911940-12-mizhang@google.com> Subject: [PATCH v2 11/54] KVM: x86/pmu: Register guest pmi handler for emulated PMU From: Mingwei Zhang To: Sean Christopherson , Paolo Bonzini , Xiong Zhang , Dapeng Mi , Kan Liang , Zhenyu Wang , Manali Shukla , Sandipan Das Cc: Jim Mattson , Stephane Eranian , Ian Rogers , Namhyung Kim , Mingwei Zhang , gce-passthrou-pmu-dev@google.com, Samantha Alt , Zhiyuan Lv , Yanfei Xu , maobibo , Like Xu , Peter Zijlstra , kvm@vger.kernel.org, linux-perf-users@vger.kernel.org From: Xiong Zhang Add function to register/unregister PMI handler at KVM module initialization and destroy. This allows the host PMU with passthough capability enabled switch PMI handler at PMU context switch. Signed-off-by: Xiong Zhang --- arch/x86/kvm/x86.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index ebcc12d1e1de..51b5a88222ef 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -13887,6 +13887,16 @@ 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); @@ -13921,12 +13931,14 @@ 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);