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Mon, 21 Oct 2024 17:20:38 -0700 From: Nicolin Chen To: , , CC: , , , , , , , , , , , , , , , , , , , Subject: [PATCH v4 08/14] iommufd/viommu: Add vdev_to_dev helper Date: Mon, 21 Oct 2024 17:20:17 -0700 Message-ID: <3eae567a6d674cae144c5fd36cc8eafe84d6a24d.1729555967.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: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PEPF0000014A:EE_|CH3PR12MB7740:EE_ X-MS-Office365-Filtering-Correlation-Id: 86111bc4-b556-4e0b-dd70-08dcf22f6400 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: 22 Oct 2024 00:20:53.3368 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 86111bc4-b556-4e0b-dd70-08dcf22f6400 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: CH2PEPF0000014A.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB7740 This avoids a bigger trouble of moving the struct iommufd_device to the public header. Reviewed-by: Jason Gunthorpe Signed-off-by: Nicolin Chen --- include/linux/iommufd.h | 6 ++++++ drivers/iommu/iommufd/driver.c | 7 +++++++ 2 files changed, 13 insertions(+) diff --git a/include/linux/iommufd.h b/include/linux/iommufd.h index 559f274a26ea..2f4ec6e6df21 100644 --- a/include/linux/iommufd.h +++ b/include/linux/iommufd.h @@ -204,6 +204,7 @@ static inline int iommufd_vfio_compat_set_no_iommu(struct iommufd_ctx *ictx) struct iommufd_object *_iommufd_object_alloc(struct iommufd_ctx *ictx, size_t size, enum iommufd_object_type type); +struct device *vdev_to_dev(struct iommufd_vdevice *vdev); #else /* !CONFIG_IOMMUFD_DRIVER */ static inline struct iommufd_object * _iommufd_object_alloc(struct iommufd_ctx *ictx, size_t size, @@ -211,6 +212,11 @@ _iommufd_object_alloc(struct iommufd_ctx *ictx, size_t size, { return ERR_PTR(-EOPNOTSUPP); } + +static inline struct device *vdev_to_dev(struct iommufd_vdevice *vdev) +{ + return NULL; +} #endif /* CONFIG_IOMMUFD_DRIVER */ /* diff --git a/drivers/iommu/iommufd/driver.c b/drivers/iommu/iommufd/driver.c index c0876d3f91c7..a5d750d2cfaa 100644 --- a/drivers/iommu/iommufd/driver.c +++ b/drivers/iommu/iommufd/driver.c @@ -36,3 +36,10 @@ struct iommufd_object *_iommufd_object_alloc(struct iommufd_ctx *ictx, return ERR_PTR(rc); } EXPORT_SYMBOL_NS_GPL(_iommufd_object_alloc, IOMMUFD); + +/* Caller should xa_lock(&viommu->vdevs) to protect the return value */ +struct device *vdev_to_dev(struct iommufd_vdevice *vdev) +{ + return vdev ? vdev->idev->dev : NULL; +} +EXPORT_SYMBOL_NS_GPL(vdev_to_dev, IOMMUFD);