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Thu, 1 May 2025 16:01:49 -0700 From: Nicolin Chen To: , , , CC: , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v3 07/23] iommufd/selftest: Support user_data in mock_viommu_alloc Date: Thu, 1 May 2025 16:01:13 -0700 Message-ID: <56ad0296de1722682f8441711345aa07889af6fe.1746139811.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: SN1PEPF000397AF:EE_|PH7PR12MB9224:EE_ X-MS-Office365-Filtering-Correlation-Id: 30cf6bbe-7b98-4745-7ead-08dd89042edf X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|36860700013|1800799024|7416014|376014|82310400026; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.233; CTRY:US; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:dc7edge2.nvidia.com; CAT:NONE; SFS:(13230040)(36860700013)(1800799024)(7416014)(376014)(82310400026); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 May 2025 23:02:01.4446 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 30cf6bbe-7b98-4745-7ead-08dd89042edf 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: SN1PEPF000397AF.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB9224 Add a simple user_data for an input-to-output loopback test. Reviewed-by: Pranjal Shrivastava Signed-off-by: Nicolin Chen --- drivers/iommu/iommufd/iommufd_test.h | 13 +++++++++++++ drivers/iommu/iommufd/selftest.c | 19 +++++++++++++++++++ 2 files changed, 32 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 8b8ba4fb91cd..033345f81df9 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -740,16 +740,35 @@ mock_viommu_alloc(struct device *dev, struct iommu_domain *domain, { struct mock_iommu_device *mock_iommu = iommu_get_iommu_dev(dev, struct mock_iommu_device, iommu_dev); + struct iommu_viommu_selftest data; struct mock_viommu *mock_viommu; + int rc; if (viommu_type != IOMMU_VIOMMU_TYPE_SELFTEST) return ERR_PTR(-EOPNOTSUPP); + if (user_data) { + rc = iommu_copy_struct_from_user( + &data, user_data, IOMMU_VIOMMU_TYPE_SELFTEST, out_data); + if (rc) + return ERR_PTR(rc); + } + mock_viommu = iommufd_viommu_alloc(ictx, struct mock_viommu, core, &mock_viommu_ops); if (IS_ERR(mock_viommu)) return ERR_CAST(mock_viommu); + if (user_data) { + data.out_data = data.in_data; + rc = iommu_copy_struct_to_user( + user_data, &data, IOMMU_VIOMMU_TYPE_SELFTEST, out_data); + if (rc) { + iommufd_struct_destroy(mock_viommu, core); + return ERR_PTR(rc); + } + } + refcount_inc(&mock_iommu->users); return &mock_viommu->core; }