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| author | Jason Gunthorpe <jgg@nvidia.com> | 2026-02-27 15:30:10 -0400 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2026-03-17 13:57:39 +0100 |
| commit | 99fb8afa16add85ed016baee9735231bca0c32b4 (patch) | |
| tree | 783c189eb4273e4788db9d040691ca8d7717aa70 /include/linux/iommu.h | |
| parent | fa8fb60d36375ca3166a60589a624f0d0bc9ddb5 (diff) | |
| download | lwn-99fb8afa16add85ed016baee9735231bca0c32b4.tar.gz lwn-99fb8afa16add85ed016baee9735231bca0c32b4.zip | |
iommupt: Directly call iommupt's unmap_range()
The common algorithm in iommupt does not require the iommu_pgsize()
calculations, it can directly unmap any arbitrary range. Add a new function
pointer to directly call an iommupt unmap_range op and make
__iommu_unmap() call it directly.
Gives about a 5% gain on single page unmappings.
The function pointer is run through pt_iommu_ops instead of
iommu_domain_ops to discourage using it outside iommupt. All drivers with
their own page tables should continue to use the simplified
map/unmap_pages() style interfaces.
Reviewed-by: Samiullah Khawaja <skhawaja@google.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'include/linux/iommu.h')
| -rw-r--r-- | include/linux/iommu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 54b8b48c762e..7ca648c01336 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -223,6 +223,7 @@ enum iommu_domain_cookie_type { struct iommu_domain { unsigned type; enum iommu_domain_cookie_type cookie_type; + bool is_iommupt; const struct iommu_domain_ops *ops; const struct iommu_dirty_ops *dirty_ops; const struct iommu_ops *owner; /* Whose domain_alloc we came from */ |