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Fri, 25 Oct 2024 16:50:12 -0700 From: Nicolin Chen To: , , CC: , , , , , , , , , , , , , , , , , , , Subject: [PATCH v5 08/13] iommufd/selftest: Prepare for mock_viommu_alloc_domain_nested() Date: Fri, 25 Oct 2024 16:49:48 -0700 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: SJ1PEPF000023CE:EE_|MW4PR12MB6897:EE_ X-MS-Office365-Filtering-Correlation-Id: 38922398-967c-49b5-0eee-08dcf54fc7d4 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|1800799024|7416014|376014|36860700013|82310400026; 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)(7416014)(376014)(36860700013)(82310400026); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Oct 2024 23:50:18.3396 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 38922398-967c-49b5-0eee-08dcf54fc7d4 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: SJ1PEPF000023CE.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR12MB6897 A nested domain now can be allocated for a parent domain for a vIOMMU object. Rework the existing allocators to prepare for the latter case. Signed-off-by: Nicolin Chen Reviewed-by: Jason Gunthorpe --- 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)