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Thu, 10 Apr 2025 23:38:13 -0700 From: Nicolin Chen To: , , , CC: , , , , , , , , , , , , , , , , , , , Subject: [PATCH v1 05/16] iommufd/selftest: Support user_data in mock_viommu_alloc Date: Thu, 10 Apr 2025 23:37:44 -0700 Message-ID: <05aa9acfafa0d92f76c9394d49a9a5c7b29ae94a.1744353300.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: SJ5PEPF000001F6:EE_|CH3PR12MB8970:EE_ X-MS-Office365-Filtering-Correlation-Id: 2439f184-b72d-4353-84e2-08dd78c37701 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|36860700013|1800799024|82310400026|7416014|376014; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.161; CTRY:US; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:dc6edge2.nvidia.com; CAT:NONE; SFS:(13230040)(36860700013)(1800799024)(82310400026)(7416014)(376014); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Apr 2025 06:38:26.6241 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2439f184-b72d-4353-84e2-08dd78c37701 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.117.161]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SJ5PEPF000001F6.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB8970 Add a simple user_data for an input-to-output loopback test. 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..b04bd2fbc53d 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(ictx, mock_viommu, core); + return ERR_PTR(rc); + } + } + refcount_inc(&mock_iommu->users); return &mock_viommu->core; }