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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 v4 3/7] x86/cpu: Make X86_FEATURE_LFENCE_RDTSC a scattered feature bit Date: Wed, 30 Nov 2022 19:49:59 -0600 Message-ID: <20221201015003.295769-4-kim.phillips@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221201015003.295769-1-kim.phillips@amd.com> References: <20221201015003.295769-1-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: BL02EPF0000EE3C:EE_|DM4PR12MB7576:EE_ X-MS-Office365-Filtering-Correlation-Id: f9945591-f67b-4183-0428-08dad33e7b98 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)(376002)(396003)(39860400002)(346002)(136003)(451199015)(40470700004)(36840700001)(46966006)(70586007)(186003)(5660300002)(8936002)(86362001)(36756003)(4326008)(26005)(54906003)(8676002)(36860700001)(316002)(40460700003)(356005)(40480700001)(82740400003)(426003)(81166007)(47076005)(82310400005)(2616005)(7416002)(70206006)(1076003)(336012)(41300700001)(16526019)(478600001)(7696005)(6916009)(2906002)(44832011)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Dec 2022 01:50:54.0714 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f9945591-f67b-4183-0428-08dad33e7b98 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: BL02EPF0000EE3C.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB7576 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org 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 },