From patchwork Mon Mar 17 05:23:05 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikunj A Dadhania X-Patchwork-Id: 14018659 Received: from NAM12-DM6-obe.outbound.protection.outlook.com (mail-dm6nam12on2085.outbound.protection.outlook.com [40.107.243.85]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 45286218AB3 for ; Mon, 17 Mar 2025 05:23:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.243.85 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742189011; cv=fail; b=Ao+4dtiwL9pRFMwGOiKWVQibr+1L0ZrRL2qUjhoO9UVPJcMIH9NGK/x/I0D2YjbosWZewVldd/5Amj70jg2cy/GFXFSQ9iFrrtHgVRSE3DH+HJdn2zEtKwwqlOaF7bsw8tIcNIWHrZQL+So/s3exj/bZv6Vfy9B/P9P/RRoopoc= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742189011; c=relaxed/simple; bh=RvJeBBEIimdeJW27KD86TenZCjA6GyTtbfVqkGTrp0c=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=JCuR8V7HyBJVWIm1TNGYS9Ua73JFypZVdvKR83PulMNgA4C8R4fWL0ecWjRxMyTbvl1eQbpmzHwpamhMzA6ovuoVCh4T0zpxEFQrn7to7QJKVepc8RPbVIQrv/3ZIibPhPizgMXgQWKZxO3OzKK1hYruYmjC35jeTGyetrGXdeI= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b=LHOnWMIJ; arc=fail smtp.client-ip=40.107.243.85 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b="LHOnWMIJ" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=VYQeIMEVvAZAPTsCwK5Wdjke5FudfUveZZZFY6mn9BWsXc8FzE5uQgpPf/2a3KZpVFjzByDJWitxCqTs1EoqxKmaMbN/5KqcAAjnOPCsS73ygKSUKbemr5YonIEV1y0KWMR8MaUQtqk42n38wK6L59DzSQHosB/z8GePn+JAfkhMr26Jr3e+faiEET2F+wKckqUHH++QOiHZAhpUyhX9OfgbTN12/X4WZQcdVs5+KeQyzmYstQbCn0X2RLdMk+Lq2bZ9DnKt40VHnpyFImMapDyPBtR4K3WdqiNIaxUpZ1o6POgU+CwihuP46iY1upu/36gPMZAieIeWUwn92/JOjw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=9F+ObCITeBxAhkHqiY9udqbTIcQldIiGI3QvnJge+uk=; b=M2zXvX0AOaPNUIxAKn6MpJ1Yp97ESTNoKA32RoCBZWG8Uqineqro8nuEzdBf9FkebXvbk97fjO6WZ5ChHbOF96CfcGHYJLOeHYIVg0W9QR5PRxbB+ei5I4NLHccB8//awmvb6jzZ8h1jVLC7VLighyt4cPbHwWUMNtv5ZPiBXvxt0veumGlVLiAlTssQoIPFKtv+XdNXGUTBLSB9liZRldeeyJ25VwR7mMaLViAzVSYxCXfvYCSZyaycIMK+qkTFzulUC8Ygv+Od7XTxJlK931WDwTbhiF0nUqVJsi/okbcoNA9wVAs4lTyCfjlmqK9dpbV3O0evy7O8f8flEha1zw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=google.com 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 (0) 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=9F+ObCITeBxAhkHqiY9udqbTIcQldIiGI3QvnJge+uk=; b=LHOnWMIJ7Mmy+HLMPbMPiKQ6x4BZkB0CfmgW1vVBR9ujvH/ECrRd151GRL9kAKlNOhLgEBHutgG5zvupoBOmJq9XvT4u8LOCY+Pa79aeWlO5zxAh5mWYXiwMLzq+C8KguG9lFXupaN5h58Lv3160Rp3CgayEo2oDNXtxNAxwP1g= Received: from MN2PR16CA0042.namprd16.prod.outlook.com (2603:10b6:208:234::11) by IA0PR12MB8304.namprd12.prod.outlook.com (2603:10b6:208:3dc::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8534.33; Mon, 17 Mar 2025 05:23:26 +0000 Received: from BN1PEPF00006000.namprd05.prod.outlook.com (2603:10b6:208:234:cafe::95) by MN2PR16CA0042.outlook.office365.com (2603:10b6:208:234::11) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.8534.31 via Frontend Transport; Mon, 17 Mar 2025 05:23:26 +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 BN1PEPF00006000.mail.protection.outlook.com (10.167.243.232) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8534.20 via Frontend Transport; Mon, 17 Mar 2025 05:23:26 +0000 Received: from gomati.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; Mon, 17 Mar 2025 00:23:22 -0500 From: Nikunj A Dadhania To: , , CC: , , , , Subject: [PATCH v5 1/4] x86/cpufeatures: Add SNP Secure TSC Date: Mon, 17 Mar 2025 10:53:05 +0530 Message-ID: <20250317052308.498244-2-nikunj@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250317052308.498244-1-nikunj@amd.com> References: <20250317052308.498244-1-nikunj@amd.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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: BN1PEPF00006000:EE_|IA0PR12MB8304:EE_ X-MS-Office365-Filtering-Correlation-Id: a28f2924-cec8-4c3d-ac7f-08dd6513d83c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|82310400026|36860700013; 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:(13230040)(1800799024)(376014)(82310400026)(36860700013);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Mar 2025 05:23:26.2648 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a28f2924-cec8-4c3d-ac7f-08dd6513d83c 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: BN1PEPF00006000.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA0PR12MB8304 The Secure TSC feature for SEV-SNP allows guests to securely use the RDTSC and RDTSCP instructions, ensuring that the parameters used cannot be altered by the hypervisor once the guest is launched. For more details, refer to the AMD64 APM Vol 2, Section "Secure TSC". Signed-off-by: Nikunj A Dadhania Acked-by: Borislav Petkov (AMD) Reviewed-by: Tom Lendacky --- arch/x86/include/asm/cpufeatures.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index 508c0dad116b..921ed26b0be7 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -448,6 +448,7 @@ #define X86_FEATURE_VM_PAGE_FLUSH (19*32+ 2) /* VM Page Flush MSR is supported */ #define X86_FEATURE_SEV_ES (19*32+ 3) /* "sev_es" Secure Encrypted Virtualization - Encrypted State */ #define X86_FEATURE_SEV_SNP (19*32+ 4) /* "sev_snp" Secure Encrypted Virtualization - Secure Nested Paging */ +#define X86_FEATURE_SNP_SECURE_TSC (19*32+ 8) /* SEV-SNP Secure TSC */ #define X86_FEATURE_V_TSC_AUX (19*32+ 9) /* Virtual TSC_AUX */ #define X86_FEATURE_SME_COHERENT (19*32+10) /* hardware-enforced cache coherency */ #define X86_FEATURE_DEBUG_SWAP (19*32+14) /* "debug_swap" SEV-ES full debug state swap support */