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Thu, 12 Mar 2026 17:36:52 -0700 Received: from Asurada-Nvidia.nvidia.com (10.127.8.14) by mail.nvidia.com (10.126.190.180) with Microsoft SMTP Server id 15.2.2562.20 via Frontend Transport; Thu, 12 Mar 2026 17:36:51 -0700 From: Nicolin Chen To: , , , CC: , , , , , , Subject: [PATCH 0/2] iommu/tegra241-cmdqv: Fix initialization and uAPI related to HYP_OWN Date: Thu, 12 Mar 2026 17:36:33 -0700 Message-ID: X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000EE35:EE_|CH3PR12MB7570:EE_ X-MS-Office365-Filtering-Correlation-Id: ac23080c-b8ef-4960-96d9-08de8098a88d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|82310400026|36860700016|376014|56012099003|18002099003; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: hNk1d4z+FdfFf9Pav6l0zkgQXaeSLCUMd4ECTlzPY2IFdgKTj5avn/EiwgXineDQfQe4QUqZ2ccnOuU4gD7sQfQFgd0MbVLr+wG9MnnzyiTz/bOPjL2zZ6vN5sSJ/985WoiSZBa5DFHIVHHI+VpdrAlQCSgaM9Xr35UBjZYyeDDlgRI7UNC1/CjTsLMXxAw09PxafmE9yoCcm68mZ41vNgUNbCVgMTCSDuy+T1/6IraEgd4lTSQStB4Y/Yd2r05fPiWZLCTxjvQ6sxcgrLW8gLX4Im0qoDG+dA/4miaJkZILf1ziLSxt7AcJWblqtzSc7tsRpeeu94B2uyAxyGcmmjwbWnW0hOjeUcPYHqeaR00VaHEznyEsIki/c6rE6CSiav1r8QUUV10sJ5tlEDQ46QPHuJx1vn49nmD4F7baKuRZOhCL5wgPu+fW1uMBFvh+ X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Mar 2026 00:37:08.3177 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ac23080c-b8ef-4960-96d9-08de8098a88d 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: CY4PEPF0000EE35.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB7570 Hi, Eric and Shameer found a bug in kernel driver that supports_cmd is set in an incorrect order related to the hyp_own finalization. This results in a unnecessary command filter in the host environment that sends unsupported (non-invalidation) commands to the SMMU CMDQ. Also, Eric pointed it out that the requirement of VMM wiring HYP_OWN to 0 is unclear. Thus, I am sending this small series to address these issues. Nicolin Chen (2): iommu/tegra241-cmdqv: Set supports_cmd op in tegra241_vcmdq_hw_init() iommu/tegra241-cmdqv: Update uAPI to clarify HYP_OWN requirement include/uapi/linux/iommufd.h | 5 +++++ drivers/iommu/arm/arm-smmu-v3/tegra241-cmdqv.c | 7 ++++--- 2 files changed, 9 insertions(+), 3 deletions(-) -- 2.43.0