diff options
| author | Jason Gunthorpe <jgg@nvidia.com> | 2023-07-17 21:12:03 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2023-07-26 16:19:42 +0300 |
| commit | 1d149ab2e0062a98b3676d6ee0aaa34be16f4d4f (patch) | |
| tree | 1b3f7c1df82c4edd948ac2331bf6a683cb660f24 /drivers/iommu/iommufd/iommufd_private.h | |
| parent | 269c5238c5b134ca8b18b98814b87ec995a59968 (diff) | |
| download | linux-1d149ab2e0062a98b3676d6ee0aaa34be16f4d4f.tar.xz | |
iommufd: Make sw_msi_start a group global
The sw_msi_start is only set by the ARM drivers and it is always constant.
Due to the way vfio/iommufd allow domains to be re-used between
devices we have a built in assumption that there is only one value
for sw_msi_start and it is global to the system.
To make replace simpler where we may not reparse the
iommu_get_resv_regions() move the sw_msi_start to the iommufd_group so it
is always available once any HWPT has been attached.
Link: https://lore.kernel.org/r/7-v8-6659224517ea+532-iommufd_alloc_jgg@nvidia.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 | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iommu/iommufd/iommufd_private.h b/drivers/iommu/iommufd/iommufd_private.h index 206c0212ebfd..6e11d6ef71ee 100644 --- a/drivers/iommu/iommufd/iommufd_private.h +++ b/drivers/iommu/iommufd/iommufd_private.h @@ -267,6 +267,7 @@ struct iommufd_group { struct iommu_group *group; struct iommufd_hw_pagetable *hwpt; struct list_head device_list; + phys_addr_t sw_msi_start; }; /* |