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Thu, 8 May 2025 20:03:11 -0700 From: Nicolin Chen To: , , , CC: , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v4 07/23] iommufd/selftest: Support user_data in mock_viommu_alloc Date: Thu, 8 May 2025 20:02:28 -0700 Message-ID: <7cc29f0d3617f464c108f730a3f611d1154e8cbf.1746757630.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: CO1PEPF000066E6:EE_|MW6PR12MB8898:EE_ X-MS-Office365-Filtering-Correlation-Id: ba03f665-1374-4f0e-2bbd-08dd8ea60fa6 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|1800799024|82310400026|376014|36860700013|7416014; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.232; CTRY:US; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:dc7edge1.nvidia.com; CAT:NONE; SFS:(13230040)(1800799024)(82310400026)(376014)(36860700013)(7416014); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 May 2025 03:03:23.3972 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ba03f665-1374-4f0e-2bbd-08dd8ea60fa6 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.118.232]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CO1PEPF000066E6.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW6PR12MB8898 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; }