iommu/io-pgtable-arm: Prepare for TTBR1 usage

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Now that we can correctly extract top-level indices without relying on
the remaining upper bits being zero, the only remaining impediments to
using a given table for TTBR1 are the address validation on map/unmap
and the awkward TCR translation granule format. Add a quirk so that we
can do the right thing at those points.

Tested-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>

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Robin Murphy 2019-10-25 19:08:39 +01:00 • committed by Will Deacon

parent ac4b80e5b9

commit db6903010a

2 changed files with 23 additions and 6 deletions

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25

drivers/iommu/io-pgtable-arm.c

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4

include/linux/io-pgtable.h

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