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Tue, 27 Oct 2026 03:01:15 +0000 Date: Tue, 27 Oct 2026 10:58:16 +0800 From: Peng Fan To: Uwe Kleine-K??nig Cc: Bjorn Andersson , Mathieu Poirier , Wolfram Sang , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , linux-remoteproc@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/2] remoteproc: elf_loader: Create new callback for copying segments to remote cpu Message-ID: References: <4757287789726692e13b141b3b2af5245ae17e30.1793008847.git.u.kleine-koenig@baylibre.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4757287789726692e13b141b3b2af5245ae17e30.1793008847.git.u.kleine-koenig@baylibre.com> X-ClientProxiedBy: SI1PR02CA0054.apcprd02.prod.outlook.com (2603:1096:4:1f5::13) To AM8PR04MB7874.eurprd04.prod.outlook.com (2603:10a6:20b:24d::9) X-Archived-By: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM8PR04MB7874:EE_|GV1PR04MB10193:EE_ X-MS-Office365-Filtering-Correlation-Id: 92d428dd-55eb-4f62-1988-08df33d6907d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|7416014|19092799006|366016|23010399003|261021121427099003|261026121527099003|4143699003|56012099006|261021130227099003|261022115727099003|261022105027099003|261021133027099003|261022113327099003|261021135927099003|11063799006|261022075727099003|10067099003|261021123027099003|261026135527099003|18002099003|22082099003|261026140227099003|261026130827099003; 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X-Spam-Score: -1.9 (-) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-8.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On Mon, Oct 26, 2026 at 11:09:30AM +0100, Uwe Kleine-K??nig wrote: >Some devices have special needs about how an Elf segment is copied to >the remote cpu's memory space where the default implementation using >memcpy_toio/memcpy and memset_io/memset isn't suitable. An affected >mainline driver is imx-dsp-rproc which includes a near-copy of >rproc_elf_load_segments() just to handle the IRAM only allowing 32 bit >accesses. On (not-yet-mainline) ADI SC846 the respective memory isn't >directly accessible at all and DMA must be used to copy the data. > >The new callback can be used to implement just the driver specific >memcpy + memset to increase code reuse. > >The patch only appears big because of indentation changes. > >Signed-off-by: Uwe Kleine-K??nig Reviewed-by: Peng Fan