From nobody Sun Oct 5 09:07:18 2025 Received: from mail-pl1-f201.google.com (mail-pl1-f201.google.com [209.85.214.201]) (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 3FCCC2D5C91 for ; Wed, 6 Aug 2025 19:58:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754510289; cv=none; b=dHnc7hMSUkoLse6nV4qg/8zomPwXvRYvzW/MloRu+2gdaPgl4zf6/yccncJA0R/3MqRgDiLvHK0IsRXRhYZqtZUSSJ7TXi+bEmSFZ3YOqHE3Iyspsa2OoXRhvS9/kYf2fpFxu+23Lc2yNxw7xzQdKYtX2ONvWysyPJAbDnxxVxk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754510289; c=relaxed/simple; bh=JJbKDILTxe6TmmJfqZTBwaNtNaEK5gYeJU99RMfSqbk=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=VHITAwI55voaD6QXbSsd5EigVBkoj8oZ5d7UGLRNKcZVMzexXbgE1vdiN1MWKv7BTlXlQBLDuvXrbbmdV9zr0wSiqXMAd5IMMbmMjj009/HvHzY6Xlz39R4OdGxB36kOhgLGpx+ZR+mRIyljRksgVlsQYOnzOTdeVfyYf+qOFT0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=NG8S4guY; arc=none smtp.client-ip=209.85.214.201 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--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="NG8S4guY" Received: by mail-pl1-f201.google.com with SMTP id d9443c01a7336-24011ceafc8so1594785ad.3 for ; Wed, 06 Aug 2025 12:58:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1754510286; x=1755115086; 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=UYs6XLsbq3wmUfEBezJ9021CIzqcfmK4yWnl0Vk41Lo=; b=NG8S4guYhFZftTktJx/3KraRGl4TJTLFugM4i7pwjurAOwU/SkdbsSkn90UKJtwpQI C//Co/NmazMiKi2lQ6RxGdwbd48IElHyj1pXD768S5sMAHnVIULfX94Q2R4IUP7+rijk P424HtPw7w6KfCG1M8s/xsS8LKQHogpgt1oUjPMKx1nPS2igK9gEneM5QoUtXBz/n5+Y bLP/CQ9CuWuZcE6n8/yaZRGicBj1TPg6i1S9CbRMM/4DNmK0AGk8/6e8NZcytVCVx2EC 8gq9KGpcwmpD5+zkOf22AHSgvp9JK0YLM9SI3xUPRGoWBgDsIluo+QTQWvsM2EKCOuyR Xlfw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1754510286; x=1755115086; 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=UYs6XLsbq3wmUfEBezJ9021CIzqcfmK4yWnl0Vk41Lo=; b=oKo4KYge0TZBPwF+ivOC94AvS7AisgeomVLFbB8CzQ84+slAsilrh+73sfZzk5yZB7 Y/ZDyNmr11srm6VT3yvZxLaGD0GY4Jm8pFJPlMIlWi7qmhkHODJS0EYi+bs+WXLkslv7 aAhO9a1G0ve/8PVHuu3jwho+H2p2VHxeVDOLs8ItP2w3siy8Ff+S9KcjvPY+2ilvApmj T7TNLFuCfpQ0RpT6WZXrSe7RW8VyFc5mYr+MofMmA8Wul63b/q4D+Tb5qiUOxMxooN0/ cOC2QDIRBczzN61MHH+ifeOTwX9+/wuB/ww9VjgHwqeB9MaslAOGt9o2JNKgc2XY8P1s 9ryw== X-Forwarded-Encrypted: i=1; AJvYcCXHbE+LgRgkFmQAqCY2VKqveJ6V6UAaZ7LXLQAWSpHYucb0TeOJDm4BoebcnwtoZW0N7j5GESY2sEes1jI=@vger.kernel.org X-Gm-Message-State: AOJu0Yz6ZkUSJx85XjYVdJS/091P7PSXwNm0Tw4Y3K88G2aNIVeI9bIy NR/neQu8ChxkqtKQYJ/+zNaVL58EiOI2R5EdJapNvfufVqvgVbzXFJu/HZ8BMaVVdxq8l7EyxtH f0ciVFg== X-Google-Smtp-Source: AGHT+IEjtNNsSzvoH0/VB3MvaueTobKjhNGxenKGyVkg+/CWGpyESmYfNsRK9kQsugEnvTMUeRjISaSTO8s= X-Received: from pjov3.prod.google.com ([2002:a17:90a:9603:b0:31c:2fe4:33b6]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:903:1b44:b0:240:b28:22a3 with SMTP id d9443c01a7336-242b1a687dfmr5147985ad.29.1754510285965; Wed, 06 Aug 2025 12:58:05 -0700 (PDT) Reply-To: Sean Christopherson Date: Wed, 6 Aug 2025 12:56:42 -0700 In-Reply-To: <20250806195706.1650976-1-seanjc@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250806195706.1650976-1-seanjc@google.com> X-Mailer: git-send-email 2.50.1.565.gc32cd1483b-goog Message-ID: <20250806195706.1650976-21-seanjc@google.com> Subject: [PATCH v5 20/44] KVM: x86/pmu: Implement AMD mediated PMU requirements From: Sean Christopherson To: Marc Zyngier , Oliver Upton , Tianrui Zhao , Bibo Mao , Huacai Chen , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Xin Li , "H. Peter Anvin" , Andy Lutomirski , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Sean Christopherson , Paolo Bonzini Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, loongarch@lists.linux.dev, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Kan Liang , Yongwei Ma , Mingwei Zhang , Xiong Zhang , Sandipan Das , Dapeng Mi Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Require host PMU version 2+ for AMD mediated PMU support, as PERF_GLOBAL_CTRL and friends are hard requirements for the mediated PMU. Signed-off-by: Dapeng Mi Co-developed-by: Mingwei Zhang Signed-off-by: Mingwei Zhang [sean: extract to separate patch, write changelog] Signed-off-by: Sean Christopherson Reviewed-by: Sandipan Das --- arch/x86/kvm/svm/pmu.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/x86/kvm/svm/pmu.c b/arch/x86/kvm/svm/pmu.c index 7b8577f3c57a..96be2c3e0d65 100644 --- a/arch/x86/kvm/svm/pmu.c +++ b/arch/x86/kvm/svm/pmu.c @@ -227,6 +227,11 @@ static void amd_pmu_init(struct kvm_vcpu *vcpu) } } =20 +static bool amd_pmu_is_mediated_pmu_supported(struct x86_pmu_capability *h= ost_pmu) +{ + return host_pmu->version >=3D 2; +} + struct kvm_pmu_ops amd_pmu_ops __initdata =3D { .rdpmc_ecx_to_pmc =3D amd_rdpmc_ecx_to_pmc, .msr_idx_to_pmc =3D amd_msr_idx_to_pmc, @@ -236,6 +241,9 @@ struct kvm_pmu_ops amd_pmu_ops __initdata =3D { .set_msr =3D amd_pmu_set_msr, .refresh =3D amd_pmu_refresh, .init =3D amd_pmu_init, + + .is_mediated_pmu_supported =3D amd_pmu_is_mediated_pmu_supported, + .EVENTSEL_EVENT =3D AMD64_EVENTSEL_EVENT, .MAX_NR_GP_COUNTERS =3D KVM_MAX_NR_AMD_GP_COUNTERS, .MIN_NR_GP_COUNTERS =3D AMD64_NUM_COUNTERS, --=20 2.50.1.565.gc32cd1483b-goog