From nobody Mon Feb 9 07:20:41 2026 Received: from PH7PR06CU001.outbound.protection.outlook.com (mail-westus3azon11010054.outbound.protection.outlook.com [52.101.201.54]) (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 228A1323F5C; Thu, 25 Sep 2025 22:37:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.201.54 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758839829; cv=fail; b=R3dsT+6YvYBlGgJ524JBLlekS9f8wMPKEA4x2TGUdwKcZlLFU7douqtAL5DtGaOBh4Lx2tKZyYD03lhEvUZjqA3GUMlaYr6QyHIKqP2ng6IrwJ/r6E7//Tk47X1n5n1xXtgJy3F9QX54IDE6H7Fy1LH+Mbp8UmtHWZLnESzBdqE= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758839829; c=relaxed/simple; bh=mpIcKoLfM9a4mbgm+7hcaygnOqoCZmim4/NU08nKNAU=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=jVDilxepJKXC2pRNQpCXpL6ka/lGxkXqCxUpKyb1oCJcxI+HpKqKA5geCqRTrqrj+xmwfi4pjnyfCD+b10vKF4PnLqmDlkdGisIohjZPKIYqvx6EXSK9uin8gPqWj94MBVZ0KC7D3+b+DMkUMZf+JnjejRRJJG3qtehqVHgwVX8= 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=QYtRezhF; arc=fail smtp.client-ip=52.101.201.54 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="QYtRezhF" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=fSK9FxWjiHV74NPdKvtSEI+LLewwFDuPIluKM6E4HWGwDPKjLZooV7oWADeCcbKRk4YUbNyqnL0kTb5MyuFvMr+6hgRYEH9HWn6c+lJP3UCX+s9iEeWaXajEQ6iq3QQwqi12IW47Wce1T2KBEjKX0vdauGqJF805ymigmS8AIheDGBznV3xsxOkrQKP0IrHvy9koSAp8f2M7+UPttm/CV7X3f4wmeZYuFuCID3MwIVdUE9e5NMtQIhAkLbAjYHyLMDX+aDMCmHf8TkcuI5UiOEnPcLdlui/aaFLtFI3hz+VMvaIf0EI65TsGN7R9HCD4IXFFflrfNLRiI8tfqWsVfw== 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=16TnI5oYamae3xlLVuyAK+xa2oHoycK3aUU51JDTlz4=; b=F11/iizVA8i3dIhJ3JRVJwSSDY6Q0/eJxvBesvGOn776LFfpwhE7zgNawO1RESa0Ct5XHqH/oAv6LtIqsQsRa7nrSmZV1LjcoagGv0CUtDAyn/ZXLQnxILH1BH3Wkxtauq2E47qmXm2Jz82BvatkzHcx+aiBd5A6HrizTqTYa7Jawff0tTsymcpSan9nPgLfwqptEZU0QeCNXtNsc+lstPWO/tlfyh0gB5JzNPfAiI1A4VaHMuPSmZQn9OpYmwSpCgZ/PvbdjSPqkx2/ELb8v7PtVQBoQ9TozHMO8thDOjv2fHimSqNC+W4uX/cxPsPo6+Oo10eCAu10KMbldspK1A== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=stgolabs.net 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=16TnI5oYamae3xlLVuyAK+xa2oHoycK3aUU51JDTlz4=; b=QYtRezhFoOYh69k6N3R7dTeIWDg02lKCZix90q7vCSDM2X7hPDb6U0HPGKI1cQaFHNLC77yMOwcEBKhMdrp8suZxd30AU2Wwce+104eJhP8wuRDfCMAxmfxJovYDfFzwucAQO4lrwBoqGU6tZBjaQqiWt8KqlnEGupcK063NOjE= Received: from BYAPR08CA0030.namprd08.prod.outlook.com (2603:10b6:a03:100::43) by BL3PR12MB6425.namprd12.prod.outlook.com (2603:10b6:208:3b4::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9160.10; Thu, 25 Sep 2025 22:37:02 +0000 Received: from SJ5PEPF000001EE.namprd05.prod.outlook.com (2603:10b6:a03:100:cafe::68) by BYAPR08CA0030.outlook.office365.com (2603:10b6:a03:100::43) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.9160.10 via Frontend Transport; Thu, 25 Sep 2025 22:37:01 +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=satlexmb07.amd.com; pr=C Received: from satlexmb07.amd.com (165.204.84.17) by SJ5PEPF000001EE.mail.protection.outlook.com (10.167.242.202) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9160.9 via Frontend Transport; Thu, 25 Sep 2025 22:37:01 +0000 Received: from ethanolx7ea3host.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 15.2.2562.17; Thu, 25 Sep 2025 15:36:59 -0700 From: Terry Bowman To: , , , , , , , , , , , , , , , , , CC: , , Subject: [PATCH v12 12/25] cxl/pci: Log message if RAS registers are unmapped Date: Thu, 25 Sep 2025 17:34:27 -0500 Message-ID: <20250925223440.3539069-13-terry.bowman@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250925223440.3539069-1-terry.bowman@amd.com> References: <20250925223440.3539069-1-terry.bowman@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: 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: SJ5PEPF000001EE:EE_|BL3PR12MB6425:EE_ X-MS-Office365-Filtering-Correlation-Id: 7a481b71-fd95-41cb-13c6-08ddfc840bab X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|1800799024|36860700013|7416014|376014|921020; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?N3klP5QiiiFGfQq7cfFKKhaHSmgx3F1lsmlRWqpNujIWN2xokgYYfcd1Fdo2?= =?us-ascii?Q?R8+rg3ue06yk87ud5IBJ66vFBE2xYQP9TNDb6WlLJxf9IxZRPaQc/HvnkAXa?= =?us-ascii?Q?5UzgF+dTmB4Cg1KpWJivH4lD7jnOaIfmnngEPXIV0as8Pc988S7eWI0uY7Ek?= =?us-ascii?Q?jY9rBSccs6JVFEn58wlcRAKUIbpRyX1jsv00mBbXE2tN5HVsoYqQ18H4GBz5?= =?us-ascii?Q?+IspHQliuMDj8MEZkHa5P6uX71QLiQ06J7ux06zMXJoLKRnbySbUUcuwoCVp?= =?us-ascii?Q?2BEVL0wtVrbUy7fMNE6ZqP1g2TTAWoY576R9Yv6nvCPTnlfZNmfyS748cFnn?= =?us-ascii?Q?EaZUatZpcvg5/hiVDn2dN3H3wXAcxHPGyUuGuklT+Qq0EpK78EEDv37R2SUq?= =?us-ascii?Q?LTP5zhHFEhfmd9OR4TZqF9dwZuUNopYF33L78ACv2UcwQ6SzaIbJoMo0WTZ7?= =?us-ascii?Q?fPWrx+bTQfxMkB8hMXOiPOgLH7ZsFzph8lTzFENaVYlOqNyZhngdaxU9SXkR?= =?us-ascii?Q?0z+Y+/E4seJPcT2U5pKo47g+9ngi1k4qhIQdkaO5la67BwcxQmbM8KcIKpoH?= =?us-ascii?Q?bz70XNHCqDS1uW4nd7PTI1BeARcu5E8q//pCZ32HPDFN29p8uNss63rv4mkH?= =?us-ascii?Q?93GQehSt5jhDvzhJFoO469qE+jdkvA+CdrLzoX6uV0zPv71oNSH1xZ+RgHyK?= =?us-ascii?Q?15qnvjbFNMUsDdgWV79dr+67Xy8M9YemG5pUsgP0IHUM0rWBECqaWkDAqXTu?= =?us-ascii?Q?L5NFrL6OTyX//JNYw6kSNKrrlTbbKoNSA0yEcG98GZ8aZI5gnHIrOZyUhSk3?= =?us-ascii?Q?toeRSBWg/6HWuPJWqZbWBYm+FkhpqbK8Tr24ncuv/kF8FBx5eTR6aVUyPOaK?= =?us-ascii?Q?x95CgObtCFCXS8LdWzYqulIiTptJgZN2KwU5jEYXC6Ec3HYhZ/kk463uvuLD?= =?us-ascii?Q?mqavSq3cZ9ZIt+qBWGZngFm80ps852fRmzMVd/JjhG9oxR0zYcI8cUiYvQLq?= =?us-ascii?Q?XGLpv9WSSf2HhpLpuXutWIZz7f8dMMTgKwUO17Zh1fWeHgBjTDC30h4XguA2?= =?us-ascii?Q?4105m/lundcw8fLgnt7UQOwdbg46zK47UIMPArU60Zow/m1P05eT8JPG3fBy?= =?us-ascii?Q?IRS+adeFfNIwOXthxprOrX9S0J6UjCBddhxyyfCW4eQFpF6SzE+zf6KXb/ul?= =?us-ascii?Q?YjjofVA7Ohp6aTHGGnnJSEW2PWJdHWxjpjNkTSG/6q9P0LA67wzHKDgBDF7w?= =?us-ascii?Q?Mr9KPT7fwrFyPNQmQrkJvEOBN/SCT+SWhhLH0IgPLA1Y8Um/PNgA1pzfXLOi?= =?us-ascii?Q?3r4UYItxsEq9A7za4jWjCg2PHpwvY0dwSzrxG6HI3ZWnwmFEO0m6+k25jSfr?= =?us-ascii?Q?YDUcDhHUAyKPrfKRWHs7yluFRSxzxjgl9gYl7qLgPk9kH69xEf8nhnl8DraH?= =?us-ascii?Q?UdEHN24Pw4/bpi+IN/9K6jZ5RiEv8VdAIbl25Ytb6pySgFj51WYbNg3GGGcl?= =?us-ascii?Q?FZ8r9fuptmofjEloSn1bIjkChN4prYg7D4O8S5TH3bs3YBGoz9x6d3kh1Byc?= =?us-ascii?Q?Xf6IHxUor7Mt/LBx1jo=3D?= X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:satlexmb07.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(82310400026)(1800799024)(36860700013)(7416014)(376014)(921020);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Sep 2025 22:37:01.6786 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 7a481b71-fd95-41cb-13c6-08ddfc840bab 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: SJ5PEPF000001EE.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL3PR12MB6425 Content-Type: text/plain; charset="utf-8" The CXL RAS handlers do not currently log if the RAS registers are unmapped. This is needed in order to help debug CXL error handling. Update the CXL driver to log a warning message if the RAS register block is unmapped during RAS error handling. Signed-off-by: Terry Bowman Reviewed-by: Jonathan Cameron Reviewed-by: Kuppuswamy Sathyanarayanan Reviewed-by: Dave Jiang Reviewed-by: Ben Cheatham --- Changes v11->v12: - None Changes v10->v11: - Added Dave Jiang review-by --- drivers/cxl/core/ras.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/cxl/core/ras.c b/drivers/cxl/core/ras.c index 152550bd3547..c66d37d65241 100644 --- a/drivers/cxl/core/ras.c +++ b/drivers/cxl/core/ras.c @@ -286,8 +286,10 @@ static void cxl_handle_cor_ras(struct device *dev, voi= d __iomem *ras_base) void __iomem *addr; u32 status; =20 - if (!ras_base) + if (!ras_base) { + dev_warn_once(dev, "CXL RAS register block is not mapped"); return; + } =20 addr =3D ras_base + CXL_RAS_CORRECTABLE_STATUS_OFFSET; status =3D readl(addr); @@ -325,8 +327,10 @@ static bool cxl_handle_ras(struct device *dev, void __= iomem *ras_base) u32 status; u32 fe; =20 - if (!ras_base) + if (!ras_base) { + dev_warn_once(dev, "CXL RAS register block is not mapped"); return false; + } =20 addr =3D ras_base + CXL_RAS_UNCORRECTABLE_STATUS_OFFSET; status =3D readl(addr); --=20 2.34.1