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client-ip=165.204.84.17; helo=satlexmb07.amd.com; pr=C Received: from satlexmb07.amd.com (165.204.84.17) by CY4PEPF0000EE3C.mail.protection.outlook.com (10.167.242.13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9160.9 via Frontend Transport; Tue, 30 Sep 2025 04:28:31 +0000 Received: from ethanolx50f7host.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; Mon, 29 Sep 2025 21:28:29 -0700 From: Smita Koralahalli To: , , , , CC: Davidlohr Bueso , Jonathan Cameron , Dave Jiang , "Alison Schofield" , Vishal Verma , Ira Weiny , Dan Williams , Matthew Wilcox , Jan Kara , "Rafael J . Wysocki" , Len Brown , Pavel Machek , Li Ming , Jeff Johnson , "Ying Huang" , Yao Xingtao , Peter Zijlstra , Greg KH , Nathan Fontenot , Smita Koralahalli , Terry Bowman , Robert Richter , Benjamin Cheatham , Zhijian Li , "Borislav Petkov" , Ard Biesheuvel Subject: [PATCH v2 3/5] dax/hmem: Use DEV_DAX_CXL instead of CXL_REGION for deferral Date: Tue, 30 Sep 2025 04:28:12 +0000 Message-ID: <20250930042814.213912-4-Smita.KoralahalliChannabasappa@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20250930042814.213912-1-Smita.KoralahalliChannabasappa@amd.com> References: <20250930042814.213912-1-Smita.KoralahalliChannabasappa@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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: CY4PEPF0000EE3C:EE_|MN0PR12MB6173:EE_ X-MS-Office365-Filtering-Correlation-Id: 4fbc8e4e-5d80-4159-6837-08ddffd9cfaa X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|1800799024|82310400026|36860700013; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?d18ycVufuFK8XqIeWxrUnq3/Qt8fECnB0agt+ZAevKRunzibJfXDJ95UA5Zv?= =?us-ascii?Q?osuGf2D23sM9FCeLouJ81fEospzqBCQz+5XYt2QsHzC66nhTmmjUJBNGZneG?= =?us-ascii?Q?HvQfay7/wXzv5k1E22CFsHFEG8y5w2zFYHkSHfVjJK6M3aiTapybxkel+RYe?= =?us-ascii?Q?4TFmEV3pzOSgLRybs9xyy37b/blFCeUWc2yBPQ9SMEtmcIMVy9f3UWXD+wSB?= =?us-ascii?Q?LgLFsSqKnGdIV1wEhdLuxzkxSlpa9S03X5D01YyO65ACypqLqJ79uRF/j6la?= =?us-ascii?Q?obUgFhooh6rhM9tX3Z1SB63NdmXVeRHjot4MHrVPGd0ePiHfWEVUiycSZorr?= =?us-ascii?Q?/1C5qbgEH08/B59vl2pOIeb25vRnyEDUBteDVyk+8LlXoqLdsN1fOsVODZO8?= =?us-ascii?Q?UBohZB5fkGcEU6Thh/ahYxXtaYys2SeMKWqXjH3vH3AmKMvvqEwlZhx5xg0Y?= =?us-ascii?Q?AirsHtcvNFc/V3epCoiZHE6cGqFf6hFLz35dPAHDbMn6JXRZS5TW4LHL/87+?= =?us-ascii?Q?e/qCyT4RpIU/RmxevXrIkevP35sZC6ZIMbpwv+gqMk7ZLPWB+1zANv0pNG6m?= =?us-ascii?Q?YFApOe/bc/UzpDYaqV3QnW700/161bW0XkbUXrAX6NQDMCNzMWtL1Y1xLb6j?= =?us-ascii?Q?6v5sA+9GKlSKRyOZORdP+dS47Z1q8qB91oUAiB0RFAXSadqsx5WPx24VxT5v?= =?us-ascii?Q?Kknnnie4M+WKVoPpiJzouZt1T67UwysTxmyEfjmDyYR+IsxzFzFhAEJpytrJ?= =?us-ascii?Q?50ic6QYCglGTk0WKq/gu1EoSz7iGwaleBZlcIb550CgL44iz44inpDcxF1eg?= =?us-ascii?Q?ek7y8rEEA+JvEpZWEtTo1NATrZcy/Av2HPT40Yyx2NzPsmkZqAvx54Vi7QgP?= =?us-ascii?Q?6UZC+EPAwks+1K5bKpl8W4ZuLdfcpqirTA2xACu/EFxGup+2qXB49hB5F+5p?= =?us-ascii?Q?3SFM/p7m3ovwPz6/DCM19PxhStlv6rpgubFRu5+gs4Bck56DVcwsnoUD39Sl?= =?us-ascii?Q?cRFKFINJKqqBjnVTmhldhiUtjDIHIKIn0btsrlyyU/zsGj+7WPkil1fYioUG?= =?us-ascii?Q?EA1Sx+BuY83WPtNR3fU8/cmAj+VLFwZumnjFUY7Bf1k6AFm5DbxprWoXetxx?= =?us-ascii?Q?XqI/VAS3pr/L3L8P1H9L6acDUiTa0xKtepC1ZyEe3QufsIkzgDQnI4S5QFIq?= =?us-ascii?Q?Cko95Qz1c/qDSsFIGDzZL9eQmKPw8bsS46kPIIAqsl2qyASBidwHq3JecYet?= =?us-ascii?Q?KYm1qPSo5eakL2ZsDSsojJPrrxBn3putubuKKWFI3EbpdNzSC7WEdN+mcJTl?= =?us-ascii?Q?gg/iS6Sp8VFbMFGk9oq3luJrEPHgBveuAm8W5G6GPEdOZUJ0x0MDDhxfIJCf?= =?us-ascii?Q?iRNNCoB1oMpvdYthssA4HFNEs7cdzgXgoeYS5I1IMJ5K2bP+It978v6kA+qu?= =?us-ascii?Q?Shf3UG8M2hfL9ebKMIy8b9dGx0wyi+R+680Wvs6/j8L94hRZ5DdLN34g9nd2?= =?us-ascii?Q?2I/8GApVagYvVQMkKYfJpkCJfKunMkBZiNpCl6judhrGv0usZfD6pQg9ttwa?= =?us-ascii?Q?jvvIlCiaV7yH5DqdAeg=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)(7416014)(376014)(1800799024)(82310400026)(36860700013);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Sep 2025 04:28:31.3013 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4fbc8e4e-5d80-4159-6837-08ddffd9cfaa 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: CY4PEPF0000EE3C.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN0PR12MB6173 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Dan Williams From: Dan Williams Replace IS_ENABLED(CONFIG_CXL_REGION) with IS_ENABLED(CONFIG_DEV_DAX_CXL) so that dax_hmem only defers Soft Reserved ranges when CXL DAX support is enabled. This makes the coordination between dax_hmem and the CXL stack more precise and prevents deferral in unrelated CXL configurations. Signed-off-by: Dan Williams Signed-off-by: Smita Koralahalli --- drivers/dax/hmem/hmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dax/hmem/hmem.c b/drivers/dax/hmem/hmem.c index 02e79c7adf75..c2c110b194e5 100644 --- a/drivers/dax/hmem/hmem.c +++ b/drivers/dax/hmem/hmem.c @@ -66,7 +66,7 @@ static int hmem_register_device(struct device *host, int = target_nid, long id; int rc; =20 - if (IS_ENABLED(CONFIG_CXL_REGION) && + if (IS_ENABLED(CONFIG_DEV_DAX_CXL) && region_intersects(res->start, resource_size(res), IORESOURCE_MEM, IORES_DESC_CXL) !=3D REGION_DISJOINT) { dev_dbg(host, "deferring range to CXL: %pr\n", res); --=20 2.17.1