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Mon, 9 Jun 2025 10:13:47 -0700 From: Nicolin Chen To: , CC: , , , , , , , , , , , , Subject: [PATCH v1 06/12] iommufd/selftest: Implement mock_get_viommu_size and mock_viommu_init Date: Mon, 9 Jun 2025 10:13:29 -0700 Message-ID: <5880f4d754b2b7a7c4bc8664a5b954821c73aab7.1749488870.git.nicolinc@nvidia.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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: BL02EPF0001A100:EE_|IA4PR12MB9812:EE_ X-MS-Office365-Filtering-Correlation-Id: a1a33738-54c7-48b5-e33d-08dda7790b26 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?3wDS99W5KDZX7+U99H8CNBa6Pl8ZQ4S8yNdGioIpxlJEudPSOs2MUqwjuW/d?= =?us-ascii?Q?qRoU4HKBtZKho5nWNEcvrIEnpC7N+C64GZQTJWBy/mkOBiwtsJ7qNcAO4b1p?= =?us-ascii?Q?yVPw4HwdfdtTkg6RDElyPYkT+GBBPYUk0Ym5uw/Y5XGuDZDK2utpKecnzgCh?= =?us-ascii?Q?ygrwAZ4U1UribIfFHvQKd+o+QodQNpuLMdTsiaBtVhh0sF1itGYYuoTb9yBH?= =?us-ascii?Q?74PEfS2r7VCp+2dw2j2CaWgrgQLh5VGksyCBIWBADDD7gtIcXVc+2r400hGL?= =?us-ascii?Q?J9g/Q940J68L5418hXY2/BE6QLl8Mrm5cH9FTfV3sdCCbiaNvJ8v91CZVPdX?= =?us-ascii?Q?vTGF5HVqK2SCvIiKJhFHbZnbWHd7iKU8f5iw3WKwablEt20kGOx9Z7vGPNRP?= =?us-ascii?Q?7sf7zHMcwyq8dqncfCj9LYeOdyKKJDgFh1ByAy1Qj1i5wjN5vPAc/+GBomaN?= =?us-ascii?Q?bgvJ48J37G4BwTTarujqcMX1jfY4RKWRW+2u/OcXvzaJtyicr0gNjHvb96XG?= =?us-ascii?Q?ed/2h4r7eGI7HKn97etApMI7M5Rgfase5cnimoaIs1lC+2xwuAY0gKQJy4Du?= =?us-ascii?Q?P4qUIvEarumXaGTk1PytI9YtLWUcdHi3Q+qGYtIFGGiKwS0H2dj1bEqwB83K?= =?us-ascii?Q?JF5Wm9EMSulFgO8d0LVjrK79SAK51xK3ma01m9ntnOhVAVCqUrJEWnAJw8s1?= =?us-ascii?Q?bVt0IFQ5hzqEPGrzWnk+586KiJcIrDRo2tZOavKAYAC4k8lV1hPdcQrIgFGI?= =?us-ascii?Q?OGm1/eDDO0zOevoH8+Z0KWjTgJwMJu0r2A2QFGdUjakbqa7/LuNhNn3T6Ypk?= =?us-ascii?Q?58aoa2q1+IisH7rLT0AZJsDe6M2DaZIQN6Mds9Njg0qd4XW4/s3zerQ8YjLV?= =?us-ascii?Q?E7G4TiC7M0eOEjwIIgOUN+a8PZz6BxPjiwdeeQMqr7MvvMyLVNhlKi+HSPtS?= =?us-ascii?Q?x2eeKTZ+jwl8pE78cArZWtPM5xbb0VYyuDk8buTcAuPaM7EBCGRixutvlzYS?= =?us-ascii?Q?/eVwDmF3mH9ZVlq7nMg3A6VhS+HZZ/jpnMlE/0LrQndlQRRKh1nuy2bQjKWl?= =?us-ascii?Q?J+pIGkkbeGh/9phdSM21xpty0GIEsbOHxdLp4m2UDWXdtcJIENbVAorZnSXy?= =?us-ascii?Q?qQQn+KqxVo53s6+q7FIYWljKhZ3mi4EGHdp6+uxt5hMtqCLUoOTy9VT/hWh1?= =?us-ascii?Q?9lANccow5XRMrNjfXC+NxA7FqMftpJQD6f0kTUumPIMCIpvQSdY26WXLD57L?= =?us-ascii?Q?66/MSQMxRNIxPoYFzKY6JM5ya7SQgzz0kzQ4EdU2T8z2T8fnYFBxYT5BV2Bq?= =?us-ascii?Q?os86o05HBToeL1GR220k9ycwqKyDbpr80mgz7h0oaizagoCcZ+1Wk8QRRHhv?= =?us-ascii?Q?Bcx9ffaZqaRmkvVYyP9/hWQgIs1odlnoEwd832djoXTqNYtqAd2eY1axoSal?= =?us-ascii?Q?Skv2i5DTXlW40hNpO8phzFkVnc0PW/fSbKv/M56o/PidTTb+sLJzzOdKcJhL?= =?us-ascii?Q?gJtXYBOSTbaHSHuUO00Om3uPf1lVFjhRO8Bd?= 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; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Jun 2025 17:14:07.4341 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a1a33738-54c7-48b5-e33d-08dda7790b26 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: BL02EPF0001A100.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA4PR12MB9812 Sanitize the inputs and report the size of struct mock_viommu on success, in mock_get_viommu_size(). The core will ensure the viommu_type is set to the core vIOMMU object, so simply init the driver part in mock_viommu_init(). The mock_viommu_alloc() will be cleaned up once the transition is done. Signed-off-by: Nicolin Chen --- drivers/iommu/iommufd/selftest.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index 4d5dca8027b1..b0de205a2303 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -772,6 +772,29 @@ static struct iommufd_viommu_ops mock_viommu_ops = { .cache_invalidate = mock_viommu_cache_invalidate, }; +static int mock_get_viommu_size(enum iommu_viommu_type viommu_type, + struct device *dev, size_t *viommu_size) +{ + if (viommu_type != IOMMU_VIOMMU_TYPE_SELFTEST) + return -EOPNOTSUPP; + *viommu_size = VIOMMU_STRUCT_SIZE(struct mock_viommu, core); + return 0; +} + +static int mock_viommu_init(struct iommufd_viommu *viommu, + struct iommu_domain *parent_domain) +{ + struct mock_iommu_device *mock_iommu = container_of( + viommu->iommu_dev, struct mock_iommu_device, iommu_dev); + struct mock_viommu *mock_viommu = to_mock_viommu(viommu); + + refcount_inc(&mock_iommu->users); + mock_viommu->s2_parent = to_mock_domain(parent_domain); + + viommu->ops = &mock_viommu_ops; + return 0; +} + static struct iommufd_viommu *mock_viommu_alloc(struct device *dev, struct iommu_domain *domain, struct iommufd_ctx *ictx, @@ -810,6 +833,8 @@ static const struct iommu_ops mock_ops = { .probe_device = mock_probe_device, .page_response = mock_domain_page_response, .user_pasid_table = true, + .get_viommu_size = mock_get_viommu_size, + .viommu_init = mock_viommu_init, .viommu_alloc = mock_viommu_alloc, .default_domain_ops = &(struct iommu_domain_ops){ -- 2.43.0