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| author | Jason Gunthorpe <jgg@ziepe.ca> | 2024-10-28 12:38:01 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2024-10-29 12:08:18 +0300 |
| commit | b7a0855eb95f6db8ac8e17596e76f7b94a790fe6 (patch) | |
| tree | ca6d70d96c7e2f1bc49ce7db3aa9e8213132ec38 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 20858d4ebb423826b7a978d54cde195f51d87e20 (diff) | |
| download | linux-b7a0855eb95f6db8ac8e17596e76f7b94a790fe6.tar.xz | |
iommu: Add new flag to explictly request PASID capable domain
Introduce new flag (IOMMU_HWPT_ALLOC_PASID) to domain_alloc_users() ops.
If IOMMU supports PASID it will allocate domain. Otherwise return error.
In error path check for -EOPNOTSUPP and try to allocate non-PASID
domain so that DMA-API mode work fine for drivers which does not support
PASID as well.
Also modify __iommu_group_alloc_default_domain() to call
iommu_paging_domain_alloc_flags() with appropriate flag when allocating
paging domain.
Signed-off-by: Jason Gunthorpe <jgg@ziepe.ca>
Co-developed-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20241028093810.5901-4-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions