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authorRobin Murphy <robin.murphy@arm.com>2016-04-07 18:42:06 +0100
committerJoerg Roedel <jroedel@suse.de>2016-05-09 15:33:29 +0200
commitd16e0faab911cc0e100a1e8e93635b432566608e (patch)
treec91fd568f308365f22d42a0ab8cc07e6396c678f /usr
parent53c92d793395fdab9edbd2f79b084bb6b2e6ae79 (diff)
iommu: Allow selecting page sizes per domain
Many IOMMUs support multiple page table formats, meaning that any given domain may only support a subset of the hardware page sizes presented in iommu_ops->pgsize_bitmap. There are also certain use-cases where the creator of a domain may want to control which page sizes are used, for example to force the use of hugepage mappings to reduce pagetable walk depth. To this end, add a per-domain pgsize_bitmap to represent the subset of page sizes actually in use, to make it possible for domains with different requirements to coexist. Signed-off-by: Will Deacon <will.deacon@arm.com> [rm: hijacked and rebased original patch with new commit message] Signed-off-by: Robin Murphy <robin.murphy@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'usr')
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