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Wed, 9 Jul 2025 22:59:59 -0700 From: Nicolin Chen To: CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v9 08/29] iommufd/selftest: Support user_data in mock_viommu_alloc Date: Wed, 9 Jul 2025 22:59:00 -0700 Message-ID: X-Mailer: git-send-email 2.43.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: AnonymousSubmission X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PEPF00000144:EE_|DS7PR12MB6069:EE_ X-MS-Office365-Filtering-Correlation-Id: b0fa8432-db46-4fb4-d40f-08ddbf770783 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|1800799024|36860700013|376014|7416014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?bR71X8/8r0/i1Tv1LvFk5+fYujo08LrsrJmw0xB/Qs+HA2XHCT90FQyj/yGb?= =?us-ascii?Q?1yOphy9Fpl9ULtfmJAKZa+0719Rrn29Xg8ytf71GPu8qFXKqg1o5Atyyp9Q4?= =?us-ascii?Q?LnrrYVu7sza8VjCHzmIjUybJMGE/EE6faRPr+ny1fRzwJS8M5Xp62hoQ+reK?= =?us-ascii?Q?oPPAMY8dUKnUu1PXPBkSFtbw26d0+64WpC1L+C+zbqN+eaGUPcKvRjAI1piY?= =?us-ascii?Q?ZjAAFmVLl7iyhkGbI4qCAV4k6z1/I496OdcTiVRzdCnPbLJqGf0qyKuU84ls?= =?us-ascii?Q?oBoXVHYtQfFFNsJAN1ZFfveMFXDLIwNvjHTi+WvBkR5rHZy8cNwoKw3xL0NM?= =?us-ascii?Q?AGiAYlMJXyuY70YP1t6XQCzilRUla6Qv5vt0gjCUIFXjAnX0p4/3O8QhzI/j?= =?us-ascii?Q?MYWbfY8YMQD6SxV7DOlhwYjh/HmnLz9mDUoFvaqR6t6wZH1KM8Rm3IbXNjOk?= =?us-ascii?Q?Q7WvU9BoWy0gn/OIp9PHfpbP/tw2F4xf86uGiOhAcP27xPoUv+9O0+FAUQ7N?= =?us-ascii?Q?FVS0P7VL5+yh1kROsraVvs+1P6nfHMQZuR9soVWvGuagglimLVxMcZ8WRDGa?= =?us-ascii?Q?MrDTGpZoazLavM6U95HqBc5+tatz4+Yj7R2ju/MHCcuIFEKugwIqGQgFCmAp?= =?us-ascii?Q?o3nzN6xRfE4T7psCdxxFDiTryoo/INDIOHrSzjARVEq12XI3oldf54ocKwbZ?= =?us-ascii?Q?3KD1exM6EUMQ526dRMm87gKKNz11S/6nLufsECrq+xBMrhaoKpXkp4rHYWwf?= =?us-ascii?Q?zZvTq+BdwBZgfLwYYCc83sLBTB5/Ofz7WD8t+pLZCK8kC0FUgwMincBFAqYT?= =?us-ascii?Q?YOzqI4FbXsnl6+R2vTjcbqZgph7jmUSJbRFTCwAu5ptxdPV/ZbuITG4SeTvS?= =?us-ascii?Q?u9PgeR8JFnuxuXQntxmbVhUZGyEDowiZvRKDeQteI0oJXU6rdL0smh5aLANX?= =?us-ascii?Q?UIx31/LlCe/8mPI1eGuhXpeVLQ2QpMG6YDyyaw+cJkqYqZNlr3v09+hRXz9g?= =?us-ascii?Q?oj3GRPPEPjvGDuxr4AKZDXPX5jV2cHznizaaQ3Yq2RGxZvfH7K8zhYaIqtd6?= =?us-ascii?Q?qy88i4U8/oJD5+1+oIP0oQ/xyLfT3zrFlj/sAVWAW78VD0biQgwJgIg3cPy1?= =?us-ascii?Q?pfRrBpXMvQlYhyW9xmPB2QaxagZ/zS4hy82UADUuNHSIeESEHui9Ki3ujU4p?= =?us-ascii?Q?sTPY6Zdn1U6ZpQzhOq9SFvSVJL0z7FeWCRjX1orlfJRarFCJHX/EqlKTVqYl?= =?us-ascii?Q?rRZRm0gcDDER5f1zF4gaZcBsyv1HBMf+qnXmjDn0SuXILWntF3Vk7Cea97po?= =?us-ascii?Q?ajkqyvY6vMRenVF7LfFEjaOxMhAH/G75ciF5cCIfvHu/prM0INaQLcj+xVy/?= =?us-ascii?Q?JTI5uU71p5dTeuS0Qre4fr2rmIxejcPVqKGv94o0s+hdaGXoabQDu00V8jo2?= =?us-ascii?Q?/DSvhiBWztzBV3szYrG2XogLfly9VRfLNcO4bgaoxdBOWVpdGogFUSeyfZnR?= =?us-ascii?Q?ZxDhD7XM7ep9YkRBN8W4h4eVplwZIzx0CepB?= 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)(82310400026)(1800799024)(36860700013)(376014)(7416014);DIR:OUT;SFP:1101; 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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 0d896a89ace7..38066dfeb2e7 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -784,6 +784,21 @@ 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; -- 2.43.0