Jason Gunthorpe 89792629d4 iommupt: Add PT_FEAT_DETAILED_GATHER ...

Generating the ARM SMMUv3 and RISC-V invalidation commands optimally
requires some additional details from iommupt:

- leaf_levels_bitmap is used to compute the ARM Range Invalidation
  Table Top Level hint

- leaf_levels_bitmap is also used to compute the stride when
  generating single invalidations to invalidate once per leaf

- table_levels_bitmap also computes the ARM TTL for future cases when
  there are no leaves

Put these under a feature since only two drivers need to calculate
them.

This is also useful for the coming kunit iotlb invalidation test to
know more about what invalidation is happening.

Signed-off-by: Jason Gunthorpe <[email protected]>
Reviewed-by: Pranjal Shrivastava <[email protected]>
Tested-by: Andrew Jones <[email protected]>
Signed-off-by: Joerg Roedel <[email protected]>

2026-05-19 10:45:38 +02:00

..

common.h

iommupt: Add PT_FEAT_DETAILED_GATHER

2026-05-19 10:45:38 +02:00

iommu.h

iommupt: Avoid rewalking during map

2026-03-17 13:57:40 +01:00