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Fri, 15 May 2026 14:02:58 -0700 Date: Fri, 15 May 2026 14:02:57 -0700 From: Nicolin Chen To: Jason Gunthorpe CC: , Jonathan Hunter , "Joerg Roedel" , , , Robin Murphy , "Thierry Reding" , Krishna Reddy , "Will Deacon" , David Matlack , Pasha Tatashin , , Pranjal Shrivastava , Samiullah Khawaja , Mostafa Saleh Subject: Re: [PATCH v2 3/9] iommu/arm-smmu-v3: Use the HW arm_smmu_cmd in cmdq submission functions Message-ID: References: <0-v2-47b2bf710ad5+716ac-smmu_no_cmdq_ent_jgg@nvidia.com> <3-v2-47b2bf710ad5+716ac-smmu_no_cmdq_ent_jgg@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <3-v2-47b2bf710ad5+716ac-smmu_no_cmdq_ent_jgg@nvidia.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN1PEPF00005FFF:EE_|LV3PR12MB9257:EE_ X-MS-Office365-Filtering-Correlation-Id: 62feb9ad-0ea0-4b61-939d-08deb2c5657f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|7416014|36860700016|82310400026|3023799003|18002099003|22082099003|56012099003|4143699003|11063799003; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: ip1cdjmp4XwMZxYkmNRi2yirekCdoaLpHq2RgjizvQQBXAdPfleBMl0fpQPLHj3qMYlrnkfXVn9yaIb+9oO432hfOOC1WAHgNj//dVeOX6o53LCGOV1HRTbnn+zAmbAT+uQ+iOOYRE7EYokNJp9zU9H/hKBudenn7UjbtcifJNrbZmxsUvMEy5OCA+0iqqr5v48d8N4Xd+PiWDx6+7Lze314UuYWbLG7Ns4CNasFTr5Fd6rpfdNZkbsqN771Z8e/OUHtEUL0zl99FG6z4JSIEIeG/DJZ3T7/mbYi018y+BXFxpGOwQ4phJxrvvJu33BKMgO7dXi26FykuOZNS0sf4PbiCbzc8paa/5QSS71Bwhc6kWv2gQNFF7BrcNyrQ9/8Jaf80ce6wVahIzOOv1u7ex0qOhQUE/B/t8auq6kQGhbUmp38hBVyeXJ2eYLJMRC9 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 May 2026 21:03:21.2420 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 62feb9ad-0ea0-4b61-939d-08deb2c5657f X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.233];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN1PEPF00005FFF.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV3PR12MB9257 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260515_140335_041721_FD4ACB42 X-CRM114-Status: GOOD ( 11.51 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, May 13, 2026 at 08:57:42PM -0300, Jason Gunthorpe wrote: > Continue removing struct arm_smmu_cmdq_ent in favour of the HW based > struct arm_smmu_cmd. Switch the lower level issue commands to work on > the native struct by lifting arm_smmu_cmdq_build_cmd() into all the > callers. > > Following patches will revise each of the arm_smmu_cmdq_build_cmd() > call sites to replace it with the HW struct. > > Reviewed-by: Mostafa Saleh > Reviewed-by: Pranjal Shrivastava > Tested-by: Pranjal Shrivastava > Tested-by: Mostafa Saleh > Signed-off-by: Jason Gunthorpe [...] > @@ -3446,6 +3447,7 @@ arm_smmu_install_new_domain_invs(struct arm_smmu_attach_state *state) > static void arm_smmu_inv_flush_iotlb_tag(struct arm_smmu_inv *inv) > { > struct arm_smmu_cmdq_ent cmd = {}; > + struct arm_smmu_cmd hw_cmd; Following the other pattern, this could be: "cmd" -> "ent" and "hw_cmd" -> "cmd"? That being said, at the end of the series, these all get removed. Reviewed-by: Nicolin Chen