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Sat, 14 Jun 2025 00:15:01 -0700 From: Nicolin Chen To: , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v6 04/25] iommufd/selftest: Support user_data in mock_viommu_alloc Date: Sat, 14 Jun 2025 00:14:29 -0700 Message-ID: <276c060cd102c34fa19411df5a9ea637b071cf8b.1749884998.git.nicolinc@nvidia.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NV-OnPremToCloud: AnonymousSubmission X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A0FB:EE_|MN2PR12MB4160:EE_ X-MS-Office365-Filtering-Correlation-Id: d2c9aa1a-e5ac-417c-647e-08ddab13369a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|36860700013|376014|7416014|82310400026|1800799024; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.160; CTRY:US; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:dc6edge1.nvidia.com; CAT:NONE; SFS:(13230040)(36860700013)(376014)(7416014)(82310400026)(1800799024); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Jun 2025 07:15:16.3273 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d2c9aa1a-e5ac-417c-647e-08ddab13369a X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.117.160]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A0FB.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4160 Add a simple user_data for an input-to-output loopback test. Reviewed-by: Pranjal Shrivastava Reviewed-by: Kevin Tian Signed-off-by: Nicolin Chen --- drivers/iommu/iommufd/iommufd_test.h | 13 +++++++++++++ drivers/iommu/iommufd/selftest.c | 15 +++++++++++++++ 2 files changed, 28 insertions(+) diff --git a/drivers/iommu/iommufd/iommufd_test.h b/drivers/iommu/iommufd/iommufd_test.h index 1cd7e8394129..fbf9ecb35a13 100644 --- a/drivers/iommu/iommufd/iommufd_test.h +++ b/drivers/iommu/iommufd/iommufd_test.h @@ -227,6 +227,19 @@ struct iommu_hwpt_invalidate_selftest { #define IOMMU_VIOMMU_TYPE_SELFTEST 0xdeadbeef +/** + * struct iommu_viommu_selftest - vIOMMU data for Mock driver + * (IOMMU_VIOMMU_TYPE_SELFTEST) + * @in_data: Input random data from user space + * @out_data: Output data (matching @in_data) to user space + * + * Simply set @out_data=@in_data for a loopback test + */ +struct iommu_viommu_selftest { + __u32 in_data; + __u32 out_data; +}; + /* Should not be equal to any defined value in enum iommu_viommu_invalidate_data_type */ #define IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST 0xdeadbeef #define IOMMU_VIOMMU_INVALIDATE_DATA_SELFTEST_INVALID 0xdadbeef diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index e09fa859c359..6bd1816e0794 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -783,6 +783,21 @@ static int mock_viommu_init(struct iommufd_viommu *viommu, { struct mock_iommu_device *mock_iommu = container_of( viommu->iommu_dev, struct mock_iommu_device, iommu_dev); + struct iommu_viommu_selftest data; + int rc; + + if (user_data) { + rc = iommu_copy_struct_from_user( + &data, user_data, IOMMU_VIOMMU_TYPE_SELFTEST, out_data); + if (rc) + return rc; + + data.out_data = data.in_data; + rc = iommu_copy_struct_to_user( + user_data, &data, IOMMU_VIOMMU_TYPE_SELFTEST, out_data); + if (rc) + return rc; + } refcount_inc(&mock_iommu->users); viommu->ops = &mock_viommu_ops;