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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 v3 3/7] x86/cpu, kvm: Make X86_FEATURE_LFENCE_RDTSC a scattered feature bit Date: Tue, 29 Nov 2022 17:58:12 -0600 Message-ID: <20221129235816.188737-4-kim.phillips@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221129235816.188737-1-kim.phillips@amd.com> References: <20221129235816.188737-1-kim.phillips@amd.com> MIME-Version: 1.0 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: DM6NAM11FT033:EE_|CY5PR12MB6382:EE_ X-MS-Office365-Filtering-Correlation-Id: 4b284d98-dcdf-4fcc-7eae-08dad265b44f 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)(39860400002)(396003)(136003)(376002)(346002)(451199015)(40470700004)(36840700001)(46966006)(44832011)(40460700003)(70586007)(478600001)(86362001)(81166007)(356005)(36756003)(40480700001)(82740400003)(16526019)(36860700001)(2616005)(336012)(186003)(426003)(1076003)(47076005)(4326008)(41300700001)(6916009)(6666004)(316002)(8936002)(7416002)(26005)(8676002)(70206006)(2906002)(7696005)(54906003)(82310400005)(5660300002)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Nov 2022 23:59:08.3266 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4b284d98-dcdf-4fcc-7eae-08dad265b44f 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: DM6NAM11FT033.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY5PR12MB6382 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?1750877002097199902?= X-GMAIL-MSGID: =?utf-8?q?1750877002097199902?= It's a part of the CPUID 0x80000021 leaf, and this allows us to group this and other CPUID 0x80000021 EAX feature bits to being propagated via kvm_set_cpu_caps instead of open-coding them in __do_cpuid_func(). Unlike the other CPUID 0x80000021 EAX feature bits, X86_FEATURE_LFENCE_RDTSC already had an entry in cpufeatures.h. Signed-off-by: Kim Phillips --- arch/x86/kernel/cpu/scattered.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kernel/cpu/scattered.c b/arch/x86/kernel/cpu/scattered.c index d0734cc19d37..caa03466cd9e 100644 --- a/arch/x86/kernel/cpu/scattered.c +++ b/arch/x86/kernel/cpu/scattered.c @@ -46,6 +46,7 @@ static const struct cpuid_bit cpuid_bits[] = { { X86_FEATURE_PROC_FEEDBACK, CPUID_EDX, 11, 0x80000007, 0 }, { X86_FEATURE_MBA, CPUID_EBX, 6, 0x80000008, 0 }, { X86_FEATURE_NO_NESTED_DATA_BP,CPUID_EAX, 0, 0x80000021, 0 }, + { X86_FEATURE_LFENCE_RDTSC, CPUID_EAX, 2, 0x80000021, 0 }, { X86_FEATURE_NULL_SEL_CLR_BASE,CPUID_EAX, 6, 0x80000021, 0 }, { X86_FEATURE_PERFMON_V2, CPUID_EAX, 0, 0x80000022, 0 }, { X86_FEATURE_AMD_LBR_V2, CPUID_EAX, 1, 0x80000022, 0 },