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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 v9 6/8] x86/cpu, kvm: Add the SMM_CTL MSR not present feature Date: Tue, 24 Jan 2023 10:33:17 -0600 Message-ID: <20230124163319.2277355-7-kim.phillips@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230124163319.2277355-1-kim.phillips@amd.com> References: <20230124163319.2277355-1-kim.phillips@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT040:EE_|SJ0PR12MB5661:EE_ X-MS-Office365-Filtering-Correlation-Id: 04688a8e-a34b-4d9a-e5e0-08dafe28ecce X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 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)(346002)(136003)(376002)(39860400002)(396003)(451199015)(40470700004)(46966006)(36840700001)(36756003)(41300700001)(86362001)(81166007)(356005)(82740400003)(7416002)(8936002)(5660300002)(4326008)(44832011)(2906002)(82310400005)(83380400001)(36860700001)(478600001)(7696005)(6916009)(26005)(8676002)(186003)(40460700003)(16526019)(40480700001)(316002)(6666004)(70206006)(70586007)(54906003)(2616005)(1076003)(336012)(426003)(47076005)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Jan 2023 16:34:55.1006 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 04688a8e-a34b-4d9a-e5e0-08dafe28ecce 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: BN8NAM11FT040.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR12MB5661 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The SMM_CTL MSR not present feature was being open-coded for KVM. Add it to its newly added CPUID leaf 0x80000021 EAX proper. Also drop the bit description comments now the code is more self-describing. Signed-off-by: Kim Phillips --- arch/x86/include/asm/cpufeatures.h | 1 + arch/x86/kvm/cpuid.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index bb0b483dcfd1..8ef89d595771 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -434,6 +434,7 @@ #define X86_FEATURE_NO_NESTED_DATA_BP (20*32+ 0) /* "" No Nested Data Breakpoints */ #define X86_FEATURE_LFENCE_RDTSC (20*32+ 2) /* "" LFENCE always serializing / synchronizes RDTSC */ #define X86_FEATURE_NULL_SEL_CLR_BASE (20*32+ 6) /* "" Null Selector Clears Base */ +#define X86_FEATURE_NO_SMM_CTL_MSR (20*32+ 9) /* "" SMM_CTL MSR is not present */ /* * BUG word(s) diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index e2c403cd33f1..8519f4a993f7 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -747,7 +747,7 @@ void kvm_set_cpu_caps(void) ); if (!static_cpu_has_bug(X86_BUG_NULL_SEG)) kvm_cpu_cap_set(X86_FEATURE_NULL_SEL_CLR_BASE); - kvm_cpu_caps[CPUID_8000_0021_EAX] |= BIT(9) /* NO_SMM_CTL_MSR */; + kvm_cpu_cap_set(X86_FEATURE_NO_SMM_CTL_MSR); kvm_cpu_cap_mask(CPUID_C000_0001_EDX, F(XSTORE) | F(XSTORE_EN) | F(XCRYPT) | F(XCRYPT_EN) | -- 2.34.1