diff options
| author | Jason Gunthorpe <jgg@nvidia.com> | 2023-07-17 21:12:01 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2023-07-26 16:19:32 +0300 |
| commit | 34f327a985ff11e538aa52b3e4842328815ce5de (patch) | |
| tree | 30e9633081b3d5ed213aa8bf4978f59882c8db60 /drivers/iommu/iommufd/iommufd_private.h | |
| parent | 8d0e2e9d93d2b25b62c7fb6faf8c3cc31c6c6626 (diff) | |
| download | linux-34f327a985ff11e538aa52b3e4842328815ce5de.tar.xz | |
iommufd: Keep track of each device's reserved regions instead of groups
The driver facing API in the iommu core makes the reserved regions
per-device. An algorithm in the core code consolidates the regions of all
the devices in a group to return the group view.
To allow for devices to be hotplugged into the group iommufd would re-load
the entire group's reserved regions for each device, just in case they
changed.
Further iommufd already has to deal with duplicated/overlapping reserved
regions as it must union all the groups together.
Thus simplify all of this to just use the device reserved regions
interface directly from the iommu driver.
Link: https://lore.kernel.org/r/5-v8-6659224517ea+532-iommufd_alloc_jgg@nvidia.com
Suggested-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/iommu/iommufd/iommufd_private.h')
| -rw-r--r-- | drivers/iommu/iommufd/iommufd_private.h | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/iommu/iommufd/iommufd_private.h b/drivers/iommu/iommufd/iommufd_private.h index 2d3fd2672939..206c0212ebfd 100644 --- a/drivers/iommu/iommufd/iommufd_private.h +++ b/drivers/iommu/iommufd/iommufd_private.h @@ -76,10 +76,9 @@ int iopt_table_add_domain(struct io_pagetable *iopt, struct iommu_domain *domain); void iopt_table_remove_domain(struct io_pagetable *iopt, struct iommu_domain *domain); -int iopt_table_enforce_group_resv_regions(struct io_pagetable *iopt, - struct device *device, - struct iommu_group *group, - phys_addr_t *sw_msi_start); +int iopt_table_enforce_dev_resv_regions(struct io_pagetable *iopt, + struct device *dev, + phys_addr_t *sw_msi_start); int iopt_set_allow_iova(struct io_pagetable *iopt, struct rb_root_cached *allowed_iova); int iopt_reserve_iova(struct io_pagetable *iopt, unsigned long start, |