From nobody Sun Nov 24 15:23:16 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1722332570; cv=none; d=zohomail.com; s=zohoarc; b=JtQt0PpwH2RC1dB3rlI9h9QL/hmvV2PRow2ZqQfuK8j9eChDkpr4wMYzYDsMC1iZbYN5FVZNJjek6KYqdzra0mrbEIfOYi0zHkj4ZD0HSXuq/wrbFTp5pepnT7OkOaIs6lGmxhFfrZnk7fGrrkzSTsbX5pBH0ppN2A1BkoqzNPU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1722332570; h=Content-Transfer-Encoding:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To:Cc; bh=NzA4PjXCRONbQTo8BkDcv1kJWdZctM8YQjAGl+nA/2Y=; b=KO0BT7CEr2/EoXlr5mRlzRl9WPuDzo4I5rtsnrsUFaONQx9YULDR88hKuCbkz8GTDm/3oMRerhz9P7mv77IBn3+WxfJUxFj8j07j9o2CrInKKpzQlK0aeSuiOmtPw9B8WrgS2SuM8YWka0NVXiX8J2MptBGCJZtuhwdwf/hR8iQ= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1722332570847376.0811309960395; Tue, 30 Jul 2024 02:42:50 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sYjLK-0003aj-Kb; Tue, 30 Jul 2024 05:40:30 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sYjLI-0003UC-Qh for qemu-devel@nongnu.org; Tue, 30 Jul 2024 05:40:28 -0400 Received: from mail-wr1-x435.google.com ([2a00:1450:4864:20::435]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sYjLG-0000X7-96 for qemu-devel@nongnu.org; Tue, 30 Jul 2024 05:40:28 -0400 Received: by mail-wr1-x435.google.com with SMTP id ffacd0b85a97d-36865a516f1so2835618f8f.0 for ; Tue, 30 Jul 2024 02:40:25 -0700 (PDT) Received: from orth.archaic.org.uk (orth.archaic.org.uk. [2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-36b36862549sm14194974f8f.106.2024.07.30.02.40.24 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Jul 2024 02:40:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1722332425; x=1722937225; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=NzA4PjXCRONbQTo8BkDcv1kJWdZctM8YQjAGl+nA/2Y=; b=IWxayZdS+y1XSMSMDx/cotFWvinCo1CDJCqP00GukJsrCA5Y70FO8NDArwbha4hV+0 T1C1lDz8t5WTtkG1soHWYOCnmRgs6V3D4zvXZqdfAo1Pq7h2Mlr8mswAm0Fo5kExx0We oUlbUyaMxVgTd7lg+mUbJl4DFbN20xsFeAP7qNS8pOy1NVMXXRJbbgNLOdEfz6nFmXTc JmfGODsVcNctjtikDVjRM45uhovzHKJAd+Pjsnpc0P7OfRxNxn/stdmZZgLnz8EAn+3J wydHug7sKOkzSrgi3Nt6HyGrfNZycFhQ1TLqc6TC2cSv0EkrMnpdrmP0yJYzUC7jjAQx /Ydw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1722332425; x=1722937225; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=NzA4PjXCRONbQTo8BkDcv1kJWdZctM8YQjAGl+nA/2Y=; b=dxajZdRcstUVr/hmTLfYQOXa8ZSIRefcLCXAxP5Z33AILLS/juJ91vQwU376uB7ASV hgdIONX6TJUeQrbzoTij2xdgU8RmruzOCbV7Spx01WLSUOqdSuLlQHCKijShxxIUY6eA ufOui6iPGImbN3AOU7dTOA1/Awz7ROVZ4GE/Nymi77I10O+inhjmmlUh1aL5KfFN5XzH tQv1kZ4fZREgEW7RgkUzxUDe45QjAoELgV8fBdPi4eRvHusPHl1skbn4uY06ALbtaHEF DGm2e1uOdDblUExL3LgBtuIOgUlbwfzPMNbqGmHPtts9Ra/bABc8xT+UBRbph11GSpL+ Kl9g== X-Gm-Message-State: AOJu0YyhO4E/VhmxcZoF+BXSEGb3bFz4K+olwM4/GK6IkH65AenzhUSD HmfNabb2TY+JALecXoYgEDoKURzvm/ktWR8rMzUzjkjO93w0GQc9mhVDKDgga+o4ZbKZ/+yWGrF I X-Google-Smtp-Source: AGHT+IGMnsxlzihbxHfqSbR/RWqX9GZgXtfCmClfS1Nlc5yt8jEP7DIg2PPeJeU15ZO+q+QM2IGCqg== X-Received: by 2002:adf:f582:0:b0:368:3f5b:2ae7 with SMTP id ffacd0b85a97d-36b5d079e31mr7514750f8f.24.1722332424739; Tue, 30 Jul 2024 02:40:24 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 04/21] target/arm/kvm: Do not silently remove PMU Date: Tue, 30 Jul 2024 10:40:03 +0100 Message-Id: <20240730094020.2758637-5-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240730094020.2758637-1-peter.maydell@linaro.org> References: <20240730094020.2758637-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::435; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x435.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1722332572853116600 Content-Type: text/plain; charset="utf-8" From: Akihiko Odaki kvm_arch_init_vcpu() used to remove PMU when it is not available even if the CPU model needs one. It is semantically incorrect, and may continue execution on a misbehaving host that advertises a CPU model while lacking its PMU. Keep the PMU when the CPU model needs one, and let kvm_arm_vcpu_init() fail if the KVM implementation mismatches with our expectation. Signed-off-by: Akihiko Odaki Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- target/arm/kvm.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/target/arm/kvm.c b/target/arm/kvm.c index b20a35052f4..849e2e21b30 100644 --- a/target/arm/kvm.c +++ b/target/arm/kvm.c @@ -1888,13 +1888,8 @@ int kvm_arch_init_vcpu(CPUState *cs) if (!arm_feature(env, ARM_FEATURE_AARCH64)) { cpu->kvm_init_features[0] |=3D 1 << KVM_ARM_VCPU_EL1_32BIT; } - if (!kvm_check_extension(cs->kvm_state, KVM_CAP_ARM_PMU_V3)) { - cpu->has_pmu =3D false; - } if (cpu->has_pmu) { cpu->kvm_init_features[0] |=3D 1 << KVM_ARM_VCPU_PMU_V3; - } else { - env->features &=3D ~(1ULL << ARM_FEATURE_PMU); } if (cpu_isar_feature(aa64_sve, cpu)) { assert(kvm_arm_sve_supported()); --=20 2.34.1