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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 SN1PEPF00036F40.mail.protection.outlook.com (10.167.248.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9745.21 via Frontend Transport; Fri, 27 Mar 2026 19:36:43 +0000 Received: from [10.31.193.100] (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; Fri, 27 Mar 2026 14:36:42 -0500 Message-ID: <3c39d7c2-0f30-4151-bdba-7c715fd7533a@amd.com> Date: Fri, 27 Mar 2026 14:36:42 -0500 Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: "Cheatham, Benjamin" Subject: Re: [PATCH v24 07/11] cxl: Add function for obtaining region range To: CC: Zhi Wang , Jonathan Cameron , , , , , , , , , References: <20260323113117.2352709-1-alejandro.lucero-palau@amd.com> <20260323113117.2352709-8-alejandro.lucero-palau@amd.com> Content-Language: en-US In-Reply-To: <20260323113117.2352709-8-alejandro.lucero-palau@amd.com> Content-Type: text/plain; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 6AE6x3Mhh8ou91rvCyGFubrS74NCY9FnQQKV6ABFQ5X8Zx3yGdK49fVgx7Cju0OK6h1xmEEb4lBJgSWEAmX83mcBh4lV0193UXVr2ULxQfPI+HQTi93UswL8+jwcuYqFkKKBn9Gtx8Y+7SCFcB/fpkMHY9NrFroMIDy41wgR6ccDONLuKer4/kr1g+jaMk53gfDlDuY2zPg0jDhD+uaAx0UpQ44NwHDGj4mrAoFT/sWq8hAHC9NAk02UIYqnMDbdn8Q5aCBKWDpJeWllaOOC+HP4R/4q0T67pUKczEPy8k3lhywWJ3K9AnqUZhjG6Uw4cLQWOBkz2rjS1RHz1Ywn1Uyu3khQ9riWfYvwGQAXOxcoxRm9OEdyWCacBVPL32e7GXOT6x3jdNxG81kFmfviboH+GRcm+0OiIa/ZZVrJuywCJEFtqBQpATG1WVIF4XF7 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Mar 2026 19:36:43.8768 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 9ce1cd20-f03b-415b-bd1a-08de8c382d4e 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: SN1PEPF00036F40.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV2PR12MB5941 On 3/23/2026 6:31 AM, alejandro.lucero-palau@amd.com wrote: > From: Alejandro Lucero > > A CXL region struct contains the physical address to work with. > > Type2 drivers can create a CXL region but have not access to the > related struct as it is defined as private by the kernel CXL core. > Add a function for getting the cxl region range to be used for mapping > such memory range by a Type2 driver. > > Signed-off-by: Alejandro Lucero > Reviewed-by: Zhi Wang > Reviewed-by: Jonathan Cameron > Reviewed-by: Dave Jiang > --- Reviewed-by: Ben Cheatham