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Tue, 5 Nov 2024 12:04:52 -0800 From: Nicolin Chen To: , , CC: , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v7 09/13] iommufd/selftest: Prepare for mock_viommu_alloc_domain_nested() Date: Tue, 5 Nov 2024 12:04:25 -0800 Message-ID: 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: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0002992A:EE_|CH3PR12MB9028:EE_ X-MS-Office365-Filtering-Correlation-Id: 86fe7baf-c359-4098-7a58-08dcfdd52715 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|376014|7416014|82310400026|1800799024|36860700013; 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)(376014)(7416014)(82310400026)(1800799024)(36860700013); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Nov 2024 20:05:10.3316 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 86fe7baf-c359-4098-7a58-08dcfdd52715 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: BL02EPF0002992A.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB9028 A nested domain now can be allocated for a parent domain or for a vIOMMU object. Rework the existing allocators to prepare for the latter case. Reviewed-by: Kevin Tian Reviewed-by: Jason Gunthorpe Signed-off-by: Nicolin Chen --- drivers/iommu/iommufd/selftest.c | 89 ++++++++++++++++++-------------- 1 file changed, 50 insertions(+), 39 deletions(-) diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index 322e57ff3605..92d753985640 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -318,55 +318,39 @@ static struct iommu_domain *mock_domain_alloc_paging(struct device *dev) return &mock->domain; } -static struct iommu_domain * -__mock_domain_alloc_nested(struct mock_iommu_domain *mock_parent, - const struct iommu_hwpt_selftest *user_cfg) +static struct mock_iommu_domain_nested * +__mock_domain_alloc_nested(const struct iommu_user_data *user_data) { struct mock_iommu_domain_nested *mock_nested; - int i; + struct iommu_hwpt_selftest user_cfg; + int rc, i; + + if (user_data->type != IOMMU_HWPT_DATA_SELFTEST) + return ERR_PTR(-EOPNOTSUPP); + + rc = iommu_copy_struct_from_user(&user_cfg, user_data, + IOMMU_HWPT_DATA_SELFTEST, iotlb); + if (rc) + return ERR_PTR(rc); mock_nested = kzalloc(sizeof(*mock_nested), GFP_KERNEL); if (!mock_nested) return ERR_PTR(-ENOMEM); - mock_nested->parent = mock_parent; mock_nested->domain.ops = &domain_nested_ops; mock_nested->domain.type = IOMMU_DOMAIN_NESTED; for (i = 0; i < MOCK_NESTED_DOMAIN_IOTLB_NUM; i++) - mock_nested->iotlb[i] = user_cfg->iotlb; - return &mock_nested->domain; + mock_nested->iotlb[i] = user_cfg.iotlb; + return mock_nested; } static struct iommu_domain * -mock_domain_alloc_user(struct device *dev, u32 flags, - struct iommu_domain *parent, - const struct iommu_user_data *user_data) +mock_domain_alloc_nested(struct iommu_domain *parent, u32 flags, + const struct iommu_user_data *user_data) { + struct mock_iommu_domain_nested *mock_nested; struct mock_iommu_domain *mock_parent; - struct iommu_hwpt_selftest user_cfg; - int rc; - - /* must be mock_domain */ - if (!parent) { - struct mock_dev *mdev = to_mock_dev(dev); - bool has_dirty_flag = flags & IOMMU_HWPT_ALLOC_DIRTY_TRACKING; - bool no_dirty_ops = mdev->flags & MOCK_FLAGS_DEVICE_NO_DIRTY; - struct iommu_domain *domain; - - if (flags & (~(IOMMU_HWPT_ALLOC_NEST_PARENT | - IOMMU_HWPT_ALLOC_DIRTY_TRACKING))) - return ERR_PTR(-EOPNOTSUPP); - if (user_data || (has_dirty_flag && no_dirty_ops)) - return ERR_PTR(-EOPNOTSUPP); - domain = mock_domain_alloc_paging(dev); - if (!domain) - return ERR_PTR(-ENOMEM); - if (has_dirty_flag) - domain->dirty_ops = &dirty_ops; - return domain; - } - /* must be mock_domain_nested */ - if (user_data->type != IOMMU_HWPT_DATA_SELFTEST || flags) + if (flags) return ERR_PTR(-EOPNOTSUPP); if (!parent || parent->ops != mock_ops.default_domain_ops) return ERR_PTR(-EINVAL); @@ -375,12 +359,39 @@ mock_domain_alloc_user(struct device *dev, u32 flags, if (!mock_parent) return ERR_PTR(-EINVAL); - rc = iommu_copy_struct_from_user(&user_cfg, user_data, - IOMMU_HWPT_DATA_SELFTEST, iotlb); - if (rc) - return ERR_PTR(rc); + mock_nested = __mock_domain_alloc_nested(user_data); + if (IS_ERR(mock_nested)) + return ERR_CAST(mock_nested); + mock_nested->parent = mock_parent; + return &mock_nested->domain; +} + +static struct iommu_domain * +mock_domain_alloc_user(struct device *dev, u32 flags, + struct iommu_domain *parent, + const struct iommu_user_data *user_data) +{ + bool has_dirty_flag = flags & IOMMU_HWPT_ALLOC_DIRTY_TRACKING; + const u32 PAGING_FLAGS = IOMMU_HWPT_ALLOC_DIRTY_TRACKING | + IOMMU_HWPT_ALLOC_NEST_PARENT; + bool no_dirty_ops = to_mock_dev(dev)->flags & + MOCK_FLAGS_DEVICE_NO_DIRTY; + struct iommu_domain *domain; + + if (parent) + return mock_domain_alloc_nested(parent, flags, user_data); - return __mock_domain_alloc_nested(mock_parent, &user_cfg); + if (user_data) + return ERR_PTR(-EOPNOTSUPP); + if ((flags & ~PAGING_FLAGS) || (has_dirty_flag && no_dirty_ops)) + return ERR_PTR(-EOPNOTSUPP); + + domain = mock_domain_alloc_paging(dev); + if (!domain) + return ERR_PTR(-ENOMEM); + if (has_dirty_flag) + domain->dirty_ops = &dirty_ops; + return domain; } static void mock_domain_free(struct iommu_domain *domain)