diff options
| author | Yi Liu <yi.l.liu@intel.com> | 2023-07-18 03:55:36 -0700 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2023-07-25 10:17:52 -0600 |
| commit | 86b0a96c2952fa07b782b37f6ec783ace63a01a6 (patch) | |
| tree | eec72297c54a71f2094af4277704f777b9639403 /include/linux/iommufd.h | |
| parent | eda175dfe2484c1e79afaee0f65eeebfb9f89a53 (diff) | |
iommufd: Add iommufd_ctx_has_group()
This adds the helper to check if any device within the given iommu_group
has been bound with the iommufd_ctx. This is helpful for the checking on
device ownership for the devices which have not been bound but cannot be
bound to any other iommufd_ctx as the iommu_group has been bound.
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Tested-by: Yanting Jiang <yanting.jiang@intel.com>
Tested-by: Terrence Xu <terrence.xu@intel.com>
Tested-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Link: https://lore.kernel.org/r/20230718105542.4138-5-yi.l.liu@intel.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'include/linux/iommufd.h')
| -rw-r--r-- | include/linux/iommufd.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/iommufd.h b/include/linux/iommufd.h index 1129a36a74c4..f241bafa03da 100644 --- a/include/linux/iommufd.h +++ b/include/linux/iommufd.h @@ -16,6 +16,7 @@ struct page; struct iommufd_ctx; struct iommufd_access; struct file; +struct iommu_group; struct iommufd_device *iommufd_device_bind(struct iommufd_ctx *ictx, struct device *dev, u32 *id); @@ -50,6 +51,7 @@ void iommufd_ctx_get(struct iommufd_ctx *ictx); #if IS_ENABLED(CONFIG_IOMMUFD) struct iommufd_ctx *iommufd_ctx_from_file(struct file *file); void iommufd_ctx_put(struct iommufd_ctx *ictx); +bool iommufd_ctx_has_group(struct iommufd_ctx *ictx, struct iommu_group *group); int iommufd_access_pin_pages(struct iommufd_access *access, unsigned long iova, unsigned long length, struct page **out_pages, |