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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 SJ5PEPF000001E8.mail.protection.outlook.com (10.167.242.196) 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 04:48:11 +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 21:48:10 -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 v3 3/5] dax/hmem: Use DEV_DAX_CXL instead of CXL_REGION for deferral Date: Tue, 30 Sep 2025 04:47:55 +0000 Message-ID: <20250930044757.214798-4-Smita.KoralahalliChannabasappa@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20250930044757.214798-1-Smita.KoralahalliChannabasappa@amd.com> References: <20250930044757.214798-1-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: SJ5PEPF000001E8:EE_|CH1PR12MB9645:EE_ X-MS-Office365-Filtering-Correlation-Id: 15583d6b-b105-4368-77c0-08ddffdc8f49 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|1800799024|36860700013|7416014|376014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?HNUo18X2izVCnTrR69VGdPEs0p2T0tM4JUPV8wPYAbKMRa0eSLUDkYXSLhba?= =?us-ascii?Q?wo6DaEiqHWtOMiB/8TqMeAKGGMLt1xDQcGp4tgsbNkHyLJGdxqYBUtcFeqLA?= =?us-ascii?Q?iXJ1gUWzBfY+434YTSZdZbNIQsoZ4ckhvpPnvGng9pT/JvcNQYwh8JC+p/iW?= =?us-ascii?Q?5Sakus4peTI3c2AwNPBlgxXJMLW3NT1TeT6gYv68HJTu9lhoXxU1ULWBXK/d?= =?us-ascii?Q?ulygT645f5p/PS7BF6FmDsmyYtiT3PSLDHRvnj3YQA69q0Sc65D+pLqswwHF?= =?us-ascii?Q?pWgGLulOSXubsJvupeLS745apv2IHkqe7GEpVP64UxCRuLWJhRne94o63mO0?= =?us-ascii?Q?FccIJrvyWbljEpttKaviIqKQxnQM3TMKK5Pu16fkcFAnMzvP497mRo0CvcZm?= =?us-ascii?Q?tLAl+TtYFBjLxwzgN0sd347UYT2VqNXfeL7/pby+Rzg8i/gUqTNGSRqSTj6n?= =?us-ascii?Q?KDizdZkQx1C6/k6KVn1B4NkY3TI+VNDdvhM/29myAvKI2P7Wg6R7+IDWlon7?= =?us-ascii?Q?CM/vkC4cbGZU1X/D6M4iKOlkY+RHdH9z4ixuoDvHdQ3wk2eUludGb2HYoi5y?= =?us-ascii?Q?le7iVkhxL//dTUlBEYArntCqSe0nSGlqVXClgaaXBUJaHadOy5UWZ78YnYJc?= =?us-ascii?Q?pgy7WF/R4qpQP0BRa+BD1bv7bFJYHm0V00T8FBUoLN0qCV9BhkYQZXViJW0A?= =?us-ascii?Q?96GggXseToYmnkySdwz6z9ynigH17BaHFJUdjVGf6EnXgt3YgTmAlsOkt7BK?= =?us-ascii?Q?82pCyfSYZ418wviwQSo18aAl7QhSWYN78CodyDdlCsDM8vFyL+B/Xyzru0Rl?= =?us-ascii?Q?zoLyU1Jm3nDDbkgdnWr0XxVNeU65cLhWQNopX4diKDReSTs9lY1PIebyUdbf?= =?us-ascii?Q?HncGLG3m/FxYCtUMWxrry9ICecj2mbEMG4icnRGiliYuOcXQBx89VfNLWzdI?= =?us-ascii?Q?wpyMsR8/+63FTbDx9nOosGieTTRsVM3//CdjMmC/M2vdCgsOendc6HNUhtjv?= =?us-ascii?Q?Wo0vX12OQGwAfgrh2hSJNWMu6YNqCo3T8BtuIm+/ny8PlO0oy70n17QWTmoC?= =?us-ascii?Q?AiM+I7NKjeDIHRVrIKybWj4ok5FLvsL9d6+pr2bugUMlbrt48ZfrWF8xg9WS?= =?us-ascii?Q?M8zRZrrDFWSc03InDtUhHafWgE6+/ncq1GmPLL/IIClQAan/M4XqZHv65VqT?= =?us-ascii?Q?eKnxWo862Le5Q8japf9bpaTEOJAUOd4drcSdrehc+5Ri6LVllAUJv8VFHUoC?= =?us-ascii?Q?etDVyvFgEbsFAYyHbIaCi+nafXsWIBlhLTL+hxv9v5EC38PgkYY4ejNdXzDA?= =?us-ascii?Q?JIeY+sTgvz3iK9eGAXlV1zQCL971rNkmthCwsdMntOBm9aOYJZXj4JTVuCh3?= =?us-ascii?Q?jsYxkfQxY5ZZHu0vGa2boZ77tLui2O+XYi3MMFugLqMTXlqnyctJLyYDAonY?= =?us-ascii?Q?eVOL7Ch8py2TLsxXAW0ODPk5W2xU7Y3/hnDaoQXi4UzOVRi/N4INHIfg77rm?= =?us-ascii?Q?619eLLfqF6auUarEX99wFJQw9qXjhz92pNgISfr34JGaJHB20lgEEjDL0NJe?= =?us-ascii?Q?npVsw92d8gynSa5IqUA=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);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Sep 2025 04:48:11.7609 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 15583d6b-b105-4368-77c0-08ddffdc8f49 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: SJ5PEPF000001E8.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH1PR12MB9645 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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