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Fri, 25 Oct 2024 09:14:53 -0700 Date: Fri, 25 Oct 2024 09:14:52 -0700 From: Nicolin Chen To: "Tian, Kevin" CC: "jgg@nvidia.com" , "will@kernel.org" , "joro@8bytes.org" , "suravee.suthikulpanit@amd.com" , "robin.murphy@arm.com" , "dwmw2@infradead.org" , "baolu.lu@linux.intel.com" , "shuah@kernel.org" , "linux-kernel@vger.kernel.org" , "iommu@lists.linux.dev" , "linux-arm-kernel@lists.infradead.org" , "linux-kselftest@vger.kernel.org" , "eric.auger@redhat.com" , "jean-philippe@linaro.org" , "mdf@kernel.org" , "mshavit@google.com" , "shameerali.kolothum.thodi@huawei.com" , "smostafa@google.com" , "Liu, Yi L" , "aik@amd.com" , "zhangfei.gao@linaro.org" , "patches@lists.linux.dev" Subject: Re: [PATCH v4 06/11] iommufd: Allow pt_id to carry viommu_id for IOMMU_HWPT_ALLOC Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0002992C:EE_|CH3PR12MB7762:EE_ X-MS-Office365-Filtering-Correlation-Id: 8eaaf42a-e82c-4a12-e6e2-08dcf5102f5c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|376014|7416014|82310400026|1800799024; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Oct 2024 16:15:04.0792 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8eaaf42a-e82c-4a12-e6e2-08dcf5102f5c 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: BL02EPF0002992C.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB7762 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241025_091512_528041_1E162A8E X-CRM114-Status: GOOD ( 10.51 ) 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 Fri, Oct 25, 2024 at 09:04:15AM +0000, Tian, Kevin wrote: > > From: Nicolin Chen > > Sent: Tuesday, October 22, 2024 8:19 AM > > > > +static struct iommufd_hwpt_nested * > > +iommufd_hwpt_nested_alloc_for_viommu(struct iommufd_viommu > > *viommu, > > + const struct iommu_user_data *user_data) > > probably "_for" can be skipped to reduce the name length That would sound like a hwpt_nested allocating vIOMMU... It'd be probably neutral to have iommufd_viommu_alloc_hwpt_nested, yet we have iommufd_hwpt_nested_alloc (HWPT-based) to align with.. > looks there missed a check on flags in this path. Oh yes, I missed that. Will pass in the cmd->flags. Thanks Nicolin