From patchwork Mon Dec 5 23:32:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kim Phillips X-Patchwork-Id: 30026 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:f944:0:0:0:0:0 with SMTP id q4csp2530460wrr; Mon, 5 Dec 2022 15:37:43 -0800 (PST) X-Google-Smtp-Source: AA0mqf6FYQzepmymHt8EoIjJVcqcPB7HhnXbX9zGxi2DOuEdKvlW+inpPm223KJpxUAco/TasCUg X-Received: by 2002:aa7:c78b:0:b0:467:97e4:6339 with SMTP id n11-20020aa7c78b000000b0046797e46339mr75684203eds.381.1670283463190; Mon, 05 Dec 2022 15:37:43 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1670283463; cv=pass; d=google.com; s=arc-20160816; b=kaKYq3sJMdRNvgeBkkizvypnihfDCPQYHlQeUUmiocKXWfRSLhihX6TQsFJxGiMraq i2iddp06mwCXg77B0udfVzl/5Y1oiGF97UjS61roPXx3hXhndJ5XWgJ8aqGPcLaC/K5A thTwWRmDSkn3YNPYlCc88ZSGq3ICy5VxkKadyMPyHvfSmcasAFASdkL6Ue0vz34gPTiP XaMqI0N4dBu8QkLzTX0s9ZeNAaN1kc8eKqISWE+KNZDPwsH/x4WYNiD9HAx8j9Nu1StP OKgLkJNT0+2XoARjWVT03Z/XB454fc5K4uUONRKL2NWowuwp2Ap2z2E75kVXAQe/n4ZV NiJw== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=gGvG9Rf9xVNCz0RYULQ5crweJXubHrQh73RG4+BymoQ=; b=SELzbQDsIhE5jVdOoO5VWL7ZEpPf0Kg3sdclyM3xY0Allisadm+nrHzv9+6mrgtCmx 8QvJf8Y3iyLbxt4sslU3KZ7uu67Pd73jCd2UleJXyBWTJUWPGh6CQ1saRFPk02N+zrK8 5gK0QIiCruQBWhXSgxv9tN8ZM/MC+2bMIdB8aipj54vfcrfw/VX2pO2g0xqIUdIo2XIC Q0Z8WIsthSpLjdclMwCmK5b0en5m73MdsbDKVgrPiCdKVWPAkeXvZES2WT+eGYzBcSEm 4IGpK4rrm7/l4IzaiVdYrP81eg5LSpQKBt14XUwGcvA4IHwl4O5Jhj2dQKQcffBV99rx eBCQ== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@amd.com header.s=selector1 header.b=pb4QPrCP; arc=pass (i=1 spf=pass spfdomain=amd.com dmarc=pass fromdomain=amd.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amd.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id f17-20020a170906825100b007c0ef0592fasi2738662ejx.645.2022.12.05.15.37.19; Mon, 05 Dec 2022 15:37:43 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@amd.com header.s=selector1 header.b=pb4QPrCP; arc=pass (i=1 spf=pass spfdomain=amd.com dmarc=pass fromdomain=amd.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amd.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232919AbiLEXfM (ORCPT + 99 others); Mon, 5 Dec 2022 18:35:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51534 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232574AbiLEXei (ORCPT ); Mon, 5 Dec 2022 18:34:38 -0500 Received: from NAM11-DM6-obe.outbound.protection.outlook.com (mail-dm6nam11on2042.outbound.protection.outlook.com [40.107.223.42]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DD8762037A; Mon, 5 Dec 2022 15:34:24 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=LKv4vgrNnEUSWzQuBKCzs3GMJsXkhjGIQUQ1IG4g3WZ59j/Z03VsddgIkqjdaoAlrRIDIQyZ/1quDj6pYFZLazYLSCa4GyC5lw5HC3+WGS+X4XCQKkFUUdE9/QmgDQYhuTWh6TQd0OHKDG3FDQer1LQG7Z6yMcba6ZxTrJLKG6XNgqpiYPU5Nf/PSCjjLt04qRt305mu1vOX+QDGotbH6Ewm1epg2r5i/f/UOm0RXvdKs6ogbffeC1W30L8R0kXRgutksImhBJL/YS8WXW7eVKlxsl53+LgNwYpC9Twu+L8qG8AAeiH/2sbY5+qrditwiBqFik/cMEQoMAHpRR7axg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=gGvG9Rf9xVNCz0RYULQ5crweJXubHrQh73RG4+BymoQ=; b=a7i4EAzna/s6Pwi9K2qbhLYtCvUbV3j069DKLZMnrDqzFwVemCKGlz8sdOd6ECTL6DvVgB1Nh7491fCH2P5PcxXbrqiSEYTCvF8w5FCVrHd8VvufTJ6OtNKYUDaIcVFXlNHa0GUnRyoAosiZRKWE0ySPoy3H8ZL6UDONHxBDVETzkwesmesYSr4pBBFwUKK7WroyW3cKwkSol79Ey5eH33HkbJgxEmNQ01YAQqQdm12lkKJ9xGOoi6Agsa6vb4HypCK0CWqoZ6RBhYeo9f667d4yob9NvJp9jKDs9xX8Qqfqfz3S4kRoNsLq/0qU5MdW3CUMpJGQ5tEESFhTCO7ZOw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=kernel.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=gGvG9Rf9xVNCz0RYULQ5crweJXubHrQh73RG4+BymoQ=; b=pb4QPrCPSczPHLmG3dIsyoVFN4+ctfLhIS7awrTVXUmGml5L8kUzBDWN4NJOYiauqTY2dza1wEWMoLaSSBcqk3enQYhcKDc4VDUROmIbjliiQPEg2+ccg3Szq/Pr8Zo0vdw870TBOiNoXQnT3dVT0VjF2fmsTfwTHoTDfBsOGw0= Received: from DM5PR07CA0110.namprd07.prod.outlook.com (2603:10b6:4:ae::39) by DM4PR12MB5890.namprd12.prod.outlook.com (2603:10b6:8:66::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5880.14; Mon, 5 Dec 2022 23:34:23 +0000 Received: from DS1PEPF0000E640.namprd02.prod.outlook.com (2603:10b6:4:ae:cafe::db) by DM5PR07CA0110.outlook.office365.com (2603:10b6:4:ae::39) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5880.14 via Frontend Transport; Mon, 5 Dec 2022 23:34:23 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by DS1PEPF0000E640.mail.protection.outlook.com (10.167.17.202) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5880.8 via Frontend Transport; Mon, 5 Dec 2022 23:34:23 +0000 Received: from fritz.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.34; Mon, 5 Dec 2022 17:34:21 -0600 From: Kim Phillips To: CC: Kim Phillips , Babu Moger , Borislav Petkov , Borislav Petkov , Boris Ostrovsky , Dave Hansen , "H. Peter Anvin" , Ingo Molnar , Joao Martins , Jonathan Corbet , "Konrad Rzeszutek Wilk" , Paolo Bonzini , Sean Christopherson , Thomas Gleixner , David Woodhouse , Greg Kroah-Hartman , Juergen Gross , Peter Zijlstra , Tony Luck , Tom Lendacky , Alexey Kardashevskiy , , , Subject: [PATCH v5 7/7] x86/cpu, kvm: Propagate the AMD Automatic IBRS feature to the guest Date: Mon, 5 Dec 2022 17:32:35 -0600 Message-ID: <20221205233235.622491-8-kim.phillips@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221205233235.622491-1-kim.phillips@amd.com> References: <20221205233235.622491-1-kim.phillips@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS1PEPF0000E640:EE_|DM4PR12MB5890:EE_ X-MS-Office365-Filtering-Correlation-Id: 54a912ea-65b0-4504-6084-08dad7193d6a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: h5WNjcicmMVeYE3+iM432qfkHr6pKivq3Ca1OLkIGkvW3zN2MmtrcqkPySKV/ORSnYpcvT2HRgGSFQwIZPFHm46m8uAmPle76ZTKfk1cMstA6L58nhac5+fLIGdELk9eDrj7SbgNVrN3jvXKOEDJPrS9jN1OMBX8POVeUcIp/uOKAzok3ZNSLWdTuPaIpcxktra349dNMsccVun3vCHRwrP6/I4BoW2fsYwiWOeQlNMRpi2xJe+rHzM2bjmcPAjit083hC2NVC5wDhyqy/moRN26IEbY3YN4GfYok/snID9gosYb47p/4U0iIPccSAcWepnEeQPMKjrZP17G43PgCKR64rpOUU+HFVXFRedX+gLrcuFIx8pjMuly1/BqUZxYIemOeo9KBzhY50LVus6zDqfGIErihpWu7XMgIFxGZrvktv69vfeoeb0dTKc1L34r8a8zc7khEPpCbi7cMSRySQZi9sHwpqNV4nEbHwzYqqJpDtTzYVKh24Bjcn+fBmSHo7AH6HBJikqgr3URlJ/OGH26nLu4LYQA0t/S3fHMCrXvw2ONsm6Qc1JtohXJ4sAt/CI7dew7ehlhcVqzgDoqnTsCLXy19hAj8an8g8u6phfBusDV8I4kKfvocuw09hKHNFNWaO9pfXCHjdiRZCmkl6rxJ7xsXsgRDf1eXwdhVOX50J4hznZH8zAjuQOqR9qjiVCdbfScmpdik6lEfz1EYIV8cPGVn/G16UgfFLezhMg= X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230022)(4636009)(39860400002)(396003)(136003)(346002)(376002)(451199015)(46966006)(40470700004)(36840700001)(36756003)(7416002)(81166007)(86362001)(41300700001)(40460700003)(8936002)(4326008)(2906002)(44832011)(5660300002)(82740400003)(36860700001)(83380400001)(356005)(70206006)(70586007)(478600001)(2616005)(6916009)(54906003)(316002)(40480700001)(8676002)(82310400005)(336012)(16526019)(1076003)(47076005)(426003)(6666004)(186003)(7696005)(26005)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Dec 2022 23:34:23.0101 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 54a912ea-65b0-4504-6084-08dad7193d6a X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DS1PEPF0000E640.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5890 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1751419152865484779?= X-GMAIL-MSGID: =?utf-8?q?1751419152865484779?= Add the AMD Automatic IBRS feature bit to those being propagated to the guest, and enable the guest EFER bit. Signed-off-by: Kim Phillips --- arch/x86/kvm/cpuid.c | 2 +- arch/x86/kvm/reverse_cpuid.h | 2 ++ arch/x86/kvm/svm/svm.c | 3 +++ arch/x86/kvm/x86.c | 3 +++ 4 files changed, 9 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index dd0fe79521eb..0ed3ad3e9341 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -732,7 +732,7 @@ void kvm_set_cpu_caps(void) kvm_cpu_cap_init_scattered(CPUID_8000_0021_EAX, SF(NO_NESTED_DATA_BP) | SF(LFENCE_RDTSC) | 0 /* SmmPgCfgLock */ | - SF(NULL_SEL_CLR_BASE) | 0 /* PrefetchCtlMsr */ + SF(NULL_SEL_CLR_BASE) | SF(AUTOIBRS) | 0 /* PrefetchCtlMsr */ ); if (cpu_feature_enabled(X86_FEATURE_LFENCE_RDTSC)) kvm_cpu_cap_set(X86_FEATURE_LFENCE_RDTSC); diff --git a/arch/x86/kvm/reverse_cpuid.h b/arch/x86/kvm/reverse_cpuid.h index 184614e27d5b..0bf02c02bb0a 100644 --- a/arch/x86/kvm/reverse_cpuid.h +++ b/arch/x86/kvm/reverse_cpuid.h @@ -30,6 +30,7 @@ enum kvm_only_cpuid_leafs { #define KVM_X86_FEATURE_NO_NESTED_DATA_BP KVM_X86_FEATURE(CPUID_8000_0021_EAX, 0) #define KVM_X86_FEATURE_LFENCE_RDTSC KVM_X86_FEATURE(CPUID_8000_0021_EAX, 2) #define KVM_X86_FEATURE_NULL_SEL_CLR_BASE KVM_X86_FEATURE(CPUID_8000_0021_EAX, 6) +#define KVM_X86_FEATURE_AUTOIBRS KVM_X86_FEATURE(CPUID_8000_0021_EAX, 8) struct cpuid_reg { u32 function; @@ -89,6 +90,7 @@ static __always_inline u32 __feature_translate(int x86_feature) case X86_FEATURE_NO_NESTED_DATA_BP: return KVM_X86_FEATURE_NO_NESTED_DATA_BP; case X86_FEATURE_LFENCE_RDTSC: return KVM_X86_FEATURE_LFENCE_RDTSC; case X86_FEATURE_NULL_SEL_CLR_BASE: return KVM_X86_FEATURE_NULL_SEL_CLR_BASE; + case X86_FEATURE_AUTOIBRS: return KVM_X86_FEATURE_AUTOIBRS; default: break; } diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index ce362e88a567..1551a791cff0 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -4946,6 +4946,9 @@ static __init int svm_hardware_setup(void) tsc_aux_uret_slot = kvm_add_user_return_msr(MSR_TSC_AUX); + if (boot_cpu_has(X86_FEATURE_AUTOIBRS)) + kvm_enable_efer_bits(EFER_AUTOIBRS); + /* Check for pause filtering support */ if (!boot_cpu_has(X86_FEATURE_PAUSEFILTER)) { pause_filter_count = 0; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 2835bd796639..0697d444c715 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1688,6 +1688,9 @@ static int do_get_msr_feature(struct kvm_vcpu *vcpu, unsigned index, u64 *data) static bool __kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer) { + if (efer & EFER_AUTOIBRS && !guest_cpuid_has(vcpu, X86_FEATURE_AUTOIBRS)) + return false; + if (efer & EFER_FFXSR && !guest_cpuid_has(vcpu, X86_FEATURE_FXSR_OPT)) return false;