From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=pass header.oldest-pass=0 smtp.remote-ip=52.101.52.52 ARC-Seal: i=2; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=pass; t=1792781471; b=McX+CuXnPmwVQMBzlyWRIdVYa+BVUdogkmCq1fGdUZ1sn2a2A+2FYNB0s7nQY6Lm1XYm jLfF51yOClvIynFtEz2t1qvEmfr4Vg3cAi4fscaAoKwOp8MxWsbgHdduw0VgChb++cLf4 ElZbJN/xXkh+c5Ov+G4/Md8OMs0sK/IE9zd5EyD6F8Wk68XxohYbbnoDxqoCXeXsLG6pK pNYP2z2OFCwcMxSfD4+W6iQvBQkmVmWjJcY4O9aYGYu7pV/U5EPEdkGER6OG6fRZe2+4F nFA9VVjMFrdyF0li6icPKkig+e/HevfriGswP3yYqYBPy5syPnmFhchjKCtuMbbBdAQ== ARC-Message-Signature: i=2; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792781471; h=DMARC-Filter:DKIM-Signature:Received:Received: X-MS-Exchange-Authentication-Results:Received-SPF:Received:Received: From:To:CC:Subject:Date:Message-ID:X-Mailer:MIME-Version: Content-Transfer-Encoding:Content-Type:X-Originating-IP: X-ClientProxiedBy:X-EOPAttributedMessage:X-MS-PublicTrafficType: X-MS-TrafficTypeDiagnostic:X-MS-Office365-Filtering-Correlation-Id: X-MS-Exchange-SenderADCheck:X-MS-Exchange-AntiSpam-Relay: X-Microsoft-Antispam:X-Microsoft-Antispam-Message-Info: X-Forefront-Antispam-Report: X-MS-Exchange-AntiSpam-MessageData-ChunkCount: X-MS-Exchange-AntiSpam-MessageData-0:X-OriginatorOrg: X-MS-Exchange-CrossTenant-OriginalArrivalTime: X-MS-Exchange-CrossTenant-Network-Message-Id: X-MS-Exchange-CrossTenant-Id: X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: X-MS-Exchange-CrossTenant-AuthSource:X-MS-Exchange-CrossTenant-AuthAs: X-MS-Exchange-CrossTenant-FromEntityHeader: X-MS-Exchange-Transport-CrossTenantHeadersStamped; bh=MrBieMwx5FjVtLgMmcvfUBiUvgd9aVklelI3U+W/DtE=; b=q0DeN/wxFx44ohPVYOpBjDgQSno3XDJoVeGEgQcQ07ceF229gWmV1EU16B7Wnharq/iE tQIUmsT2fk4j3ud5BOOwbA2h/fH9YDTLlkaxrZsLgIJ2oNy/yJmRBZguXHsrozaleXZoo f4mrLhTpFLm52/g6fYEqcmtBypvAGKY3LXkpmKc0p5VseyM7lwBFXMnTxPiB7buAa1e4D VA6xSTK6RkEc8sBrQEKHGgw/bk05DVyoshhRTdpC7bOKBwtweeBszHz3tZcY2HhaQSN+a DLDCUBmtwsvtWSmMkFqkytcHQ0JOXCfDpwHFosCWEcR7j9HcwFl/rE+6BHY+FFEdEuA== ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass header.d=amd.com header.i=@amd.com header.a=rsa-sha256 header.s=selector1 header.b=T5AQ41Jx; arc=pass header.oldest-pass=0 smtp.remote-ip=52.101.52.52 Received: from BL2PR02CU003.outbound.protection.outlook.com (mail-eastusazon11011052.outbound.protection.outlook.com [52.101.52.52]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (secp384r1) server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3E17E606A31A for ; Fri, 23 Oct 2026 18:51:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 3E17E606A31A 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, unprotected) header.d=amd.com header.i=@amd.com header.a=rsa-sha256 header.s=selector1 header.b=T5AQ41Jx ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=U4ikfjbShParb75spkW1oBW13wFSzYaIpKWJ9BqHzz2Wnc+p4qDf34h5vLNKFMjU3qZiJwAaMWqvSQyCXgnQZLlHphiD8flgTCGU8qWTTBYzGRO2CElj2i5+jUrzMJkolG5jidEo1Y7b2LdPkDOV9jrNs8MEojIbHROyaL+gDcQNEOZB3ClFscGuNrKCqziiUJKfCXFpjeXHgeaYsD3xwgul3ikdtHkO21TwKqfgm3seXT1pRfrD6RHejlwOSJMy+VdK4aTMSnwf9deAFFqhx8g9s8/NSiy3ZTc3zHIW06RXeUQQTFY4of5YwINNPjMJQOmgmHZxPewwS4qgAty41A== 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=MrBieMwx5FjVtLgMmcvfUBiUvgd9aVklelI3U+W/DtE=; b=hZRAlQ6k5CBoUiwfVbVb/JPbj7/XjVRGCFEXPBiCXc+bKk/MPGtg6KjjgBlqDiAQ6h+mbsXcl26XZZaCV3DLrphc09/ZoZb6vFth3kTy9CKE+gSoSOt2TTaJ1zBPxLw7RXUa2Pm2OKnClzJx3h8j2wACxW5+E9YB9mXZjqc+goGhr7I03Un618z04jZ1DczQtrCVsMNHqawAIUzOif4F8dMUoQxVBV3Iu+v2aP3ywsUAwafjiqSptalzOovF/32zx3lZud6LlilWglLexSswmkTFlWDqgmpC+aYXNv0hGw/lCpoH6RE/AZ5mFQEruc7i6qucqoHDwwdgbSA1RJqKww== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=8bytes.org 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=MrBieMwx5FjVtLgMmcvfUBiUvgd9aVklelI3U+W/DtE=; b=T5AQ41Jxd5wWOFnV9u/bAX144Yi0N1owynbMpT2emWAaQW3z/8jR1JGPSgR6MXqpojivSaGzoxio9TjAz967hV4WSKSqGq92f2po8w3LQp78RkoDHc5le7/ta+mhk9f2KVrk/U3UF0h0LwlvQqTnYitAX6UMJ9DsC6Xv90tPxVo= Received: from DS7P220CA0112.NAMP220.PROD.OUTLOOK.COM (2603:10b6:8:25d::9) by CY5PR12MB6203.namprd12.prod.outlook.com (2603:10b6:930:24::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.522.15; Fri, 23 Oct 2026 18:51:05 +0000 Received: from CY4PEPF000392DA.namprd03.prod.outlook.com (2603:10b6:8:25d:cafe::7c) by DS7P220CA0112.outlook.office365.com (2603:10b6:8:25d::9) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.21.546.18 via Frontend Transport; Fri, 23 Oct 2026 18:51:05 +0000 X-MS-Exchange-Authentication-Results: mx.microsoft.com 1; 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=satlexmb07.amd.com; pr=C Received: from satlexmb07.amd.com (165.204.84.17) by CY4PEPF000392DA.mail.protection.outlook.com (10.167.247.120) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.569.4 via Frontend Transport; Fri, 23 Oct 2026 18:51:05 +0000 Received: from BLRDHSRIVAS.amd.com (10.180.168.240) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.53; Fri, 23 Oct 2026 13:51:01 -0500 From: Dheeraj Kumar Srivastava To: , , , , , , , , , CC: Dheeraj Kumar Srivastava Subject: [PATCH] iommu/amd: Clear amd_iommu_snp_en if snp_rmptable_init() fails Date: Sat, 24 Oct 2026 00:20:41 +0530 Message-ID: <20261023185041.8685-1-dheerajkumar.srivastava@amd.com> X-Mailer: git-send-email 2.25.1 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: satlexmb07.amd.com (10.181.42.216) To satlexmb07.amd.com (10.181.42.216) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF000392DA:EE_|CY5PR12MB6203:EE_ X-MS-Office365-Filtering-Correlation-Id: 76d9d788-666a-497d-5581-08df313697a6 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|36860700016|23010399003|82310400026|376014|261021121427099003|56012099006|921020|11063799006|261009223027099003|18002099003|6133799003|10067099003|261022105027099003|261022075727099003; X-Microsoft-Antispam-Message-Info: RQJpGJVKr0mWU6pMMQcnpXvWHFpiuFq3DU3CJI6SB8YNk1ncd6h6e469G8rn2EtCzFHQ0cv20udSilb8VUTKvlXrcDlwk+Yo6rZErh3x4QRt8SFCenFql0qLWRQdnNPX8N4UXRn27Zh6leDa7+e41yuV6GJbjOQz9tU16RrJWd1ZscjTu7gYAe+z9RWbVUsjvc2ITUDdBeZLXjQkrEIECAs/m/YgKATQAvRlOsjPUKiNtlp0VYNGDJrZhjvYi3vYKsFXbIr0//v7DnIImyltPRrOXf5+abum7F1k2I0n8zhBD4UMcr5PlFlYUoSZxtnLPu9fdp0uxFhqC1N2jX8Jx/oRCTI6Bf662gW8w24iMQyhV9uvYwDdORbtnx9Rov3dU7S+sVQOK3A39F6bi/PE+ERbZgXNPVY8S2nG4fC1wz18Yli4MTlVFxTJXhOK3paIICGhf7p8ZyUkwo0Z9jRV1qdx+Ch1p9pBmP1Dk+b+01owuXdCoNUjF9OCkeoou7jnWQVYveK1CzX2HEnI4lUhr/TWNPNLwIqu0vfQrpGJC266lYwqubyXpgdAH7cjyJFoKHJfYWkmJ+G4i+5Ai/ciyMdIFy0xxMsI5lM4pB6twVxg+jSdZh6SMP4BUIzKvCcXI5o1p76TbCOidufYEI8dYEUWDgGqdNcukdbuUDODYDJymBB60vKck3CUugxOaeFJwYlGn61Kk6MdPBXvIAiHUyN00q0YHKOFIvlEdv42X/ihM4kjInaanFrkc0y9OzxJ X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:satlexmb07.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(1800799024)(36860700016)(23010399003)(82310400026)(376014)(261021121427099003)(56012099006)(921020)(11063799006)(261009223027099003)(18002099003)(6133799003)(10067099003)(261022105027099003)(261022075727099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 09a/S65RQLQcuMTERfcI6vQKGjaNLGgv4TvNlwY2VXtxWVPum1jH2164yPdRukrn/Onjnkx9gifkFI6tqvTZGcFhiyf+Kca/HO2/D5KH3RT5E274RtbaoVCFB5Vo3olZ0J/gD/JRZN4l2sItXr/VTlomrjzILcZaxDsE2+mtqnKkTq+sXNBqvCLU4bT3bam+cXK4cq1gdz3S7hr16boksTqW3UCbeZVAlThPtMonftiuzidYAsOfnLAM+9GVO7zHgsunp5TtdVV1ndjmjYnVJNLTun2C5ePOIRGxpO2VaKR29Ra6SbwHweV8lAlbryCl54lu9BqD4TQyqzPZ9NehctPlnz6fIhrLZvm/Q5sfXwrqOdXEkdy7SAvN1UIVIWHzYRdvxJskBMoRWxPgGl7jZJ0fLAGGfj/s9MADO/cEsA/PTsKwJf9y5dD/Xl5fJFYp X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Oct 2026 18:51:05.1071 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 76d9d788-666a-497d-5581-08df313697a6 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=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF000392DA.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY5PR12MB6203 iommu_snp_enable() checks that the IOMMU can support SNP and sets amd_iommu_snp_en, then calls snp_rmptable_init() to map the RMP table. If that call fails, CC_ATTR_HOST_SEV_SNP is cleared but amd_iommu_snp_en is left set. Later IOMMU initialization uses amd_iommu_snp_en to configure the IOMMU for SNP, on the assumption that RMP setup succeeded. Clear amd_iommu_snp_en along with CC_ATTR_HOST_SEV_SNP. Fixes: 409f45387c93 ("x86/sev: Fix broken SNP support with KVM module built-in") Signed-off-by: Dheeraj Kumar Srivastava --- drivers/iommu/amd/init.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index 8a410d4aa370..d413b1240294 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -3445,6 +3445,7 @@ static __init void iommu_snp_enable(void) return; disable_snp: + amd_iommu_snp_en = false; cc_platform_clear(CC_ATTR_HOST_SEV_SNP); #endif } -- 2.25.1