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client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BN3PEPF0000B074.mail.protection.outlook.com (10.167.243.119) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8722.18 via Frontend Transport; Fri, 9 May 2025 16:28:52 +0000 Received: from tiny.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 15.1.2507.39; Fri, 9 May 2025 11:28:51 -0500 From: David Kaplan To: Thomas Gleixner , Borislav Petkov , Peter Zijlstra , Josh Poimboeuf , Pawan Gupta , Ingo Molnar , Dave Hansen , , "H . Peter Anvin" CC: Subject: [PATCH v5 03/20] x86/Kconfig: Add arch attack vector support Date: Fri, 9 May 2025 11:28:22 -0500 Message-ID: <20250509162839.3057217-4-david.kaplan@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250509162839.3057217-1-david.kaplan@amd.com> References: <20250509162839.3057217-1-david.kaplan@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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: BN3PEPF0000B074:EE_|DS0PR12MB8526:EE_ X-MS-Office365-Filtering-Correlation-Id: 2762ceba-c60c-4a07-d1f2-08dd8f1695e2 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|7416014|376014|82310400026|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?xEUlRnMI2l8EQbW3qtdfwI53k5gTd5o96r0yCSpTk0o92794mCZpSpWStfde?= =?us-ascii?Q?YGINz14ND23LMlFXsC5nJZaCPzmp+zQQAsHcGlODBtYALBF8nHBoHI1o0ip1?= =?us-ascii?Q?w6XbAVUid37VoTZKzE2f1UWevZ41bc27oXsBy81laeuvpq2V1wgIv3l9Ik72?= =?us-ascii?Q?ygqUKjPJLnaDvIIJy/Di9NszOokkB3vBZtlowYjdwWs38UNURwSQTayV+oKL?= =?us-ascii?Q?36sXJZpHZAZSz3Th+rsuhSYYm9RfkIpa2DfyjOAme8erqOB2uNrszdYxCtat?= =?us-ascii?Q?BgJutyNilNS6kLSAoR8PHPACy9X9mIbnv4lp6wz1JRuA7qqfVNMdU90+i6Wu?= =?us-ascii?Q?r4XsiKPDc4eCsdHgCCS3Ad9Vpa2tVnAautFEVzRC7hft7vlYbi+rncwwZoPv?= =?us-ascii?Q?ZVZlcCmxzWJ0W4THcCE5ZneD9iIIPsp66z1d4UK3pvb/AP7mLtZVwbJgEupu?= =?us-ascii?Q?MapuEEcDNCVtB+dq+zQ1rPXKVZZlvKNrsfOK5+1imlUYTNXq8SsHrr/kM3aw?= =?us-ascii?Q?g4GO2GjRcTt8SJIPsus6ZZbW9EV65u0foncNEWxNcMifMinZ+QJ3yWulth7+?= =?us-ascii?Q?V/exWafEswzR2aqX52rwXhzwi1JI1UenlQpj333j2d6lBui8iO9CRQOUMDyn?= =?us-ascii?Q?Nzub58qTdceYnhCIuKZnma6ZGWDBiAFb3z7c7LcfNbPolkXqj/h4oF2pjht1?= =?us-ascii?Q?1VvHYUgGzmgZou14qRx98+OUzXXjlvMiQW4hDQ5lNFuOqJjEoPSLtgBWZVN3?= =?us-ascii?Q?Oh0Qb6Z5E5yx0qmGktvDyrgcihAjhQeA2eF608Xh4bTJ79ZfZrs96WKxBaDH?= =?us-ascii?Q?buXRiE8UTfglRw7tKpzVlNuCjDkfKd+v8hE6yA4/cVboIpUvl6trIzqPzzwn?= =?us-ascii?Q?mMJm/IJGWxnEksshe3Y/ih4jrlRgNV4Oq/WQvsjXp2zufHhQuSoa8Jqv6c2/?= =?us-ascii?Q?mQ+3tRSzYLkf4AO8IEfKo82BpH+dxBs5e+keGW1iGy3AFU3uOFZjXAZLbIrq?= =?us-ascii?Q?GYCoEgLl6pFzLvM/Fhk4YqhHSfJjLGoOYhNER2yjbTcLrqTXyB5UaYEpAIEC?= =?us-ascii?Q?bE4mmRJl8bSTyy9cz+OYii5rYYXAgx45qBvOVVvWU+7P/jvYTDApt+h+UiDs?= =?us-ascii?Q?lBApYhJwIZPydQ9vUlTjPAbTAepRnaMOjIb7cKRguvIbPw+VFtpqdy3UxWyJ?= =?us-ascii?Q?wm690iF5lTfaUVTVrkLyP9PPcTmAf6X5miYzep368GLVeHpkatgK8ialuCQW?= =?us-ascii?Q?cr42IS0S/zvNBXyBEPE4u94lnp5dsVSLg/6e076fypY7E7tPKFsdRuX13Qhr?= =?us-ascii?Q?CukRWTbiBxUPz6TQZ6V4M19OLbELEKJRkqWkuhQ/NUta63h/569GQeme+/ER?= =?us-ascii?Q?NVpvvD1JIC0q6nGzuMg+XpJT2TeNu2VG3bgDVflWaVHqPfjkNQk2BoZlai4y?= =?us-ascii?Q?7aDHwyoIStECLAkZcup4ehVNeg4uha4IdIdzGNZXgKFS4rfy7dWaPSpGxXwa?= =?us-ascii?Q?8oQiGAoxWti12rqjrSEpWLQ9xVeTXQkGy1Wj?= 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:(13230040)(36860700013)(7416014)(376014)(82310400026)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 May 2025 16:28:52.2781 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2762ceba-c60c-4a07-d1f2-08dd8f1695e2 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: BN3PEPF0000B074.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB8526 Content-Type: text/plain; charset="utf-8" ARCH_HAS_CPU_ATTACK_VECTORS should be set for architectures which implement the new attack-vector based controls for CPU mitigations. If an arch does not support attack-vector based controls then an attempt to use them results in a warning. Signed-off-by: David Kaplan --- arch/Kconfig | 3 +++ arch/x86/Kconfig | 1 + 2 files changed, 4 insertions(+) diff --git a/arch/Kconfig b/arch/Kconfig index b0adb665041f..a900f7a5baae 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -1755,4 +1755,7 @@ config ARCH_WANTS_PRE_LINK_VMLINUX An architecture can select this if it provides arch//tools/Makefi= le with .arch.vmlinux.o target to be linked into vmlinux. =20 +config ARCH_HAS_CPU_ATTACK_VECTORS + bool + endmenu diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 4c33c644b92d..af6350f056ae 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -74,6 +74,7 @@ config X86 select ARCH_ENABLE_SPLIT_PMD_PTLOCK if (PGTABLE_LEVELS > 2) && (X86_64 ||= X86_PAE) select ARCH_ENABLE_THP_MIGRATION if X86_64 && TRANSPARENT_HUGEPAGE select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI + select ARCH_HAS_CPU_ATTACK_VECTORS if CPU_MITIGATIONS select ARCH_HAS_CACHE_LINE_SIZE select ARCH_HAS_CPU_CACHE_INVALIDATE_MEMREGION select ARCH_HAS_CPU_FINALIZE_INIT --=20 2.34.1