iommu/arm-smmu-v3: Remove io-pgtable spinlock

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As for SMMUv2, take advantage of io-pgtable's newfound tolerance for
concurrency. Unfortunately in this case the command queue lock remains a
point of serialisation for the unmap path, but there may be a little
more we can do to ameliorate that in future.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

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Robin Murphy 2017-06-22 16:53:57 +01:00 • committed by Will Deacon

parent 523d7423e2

commit 58188afeb7

1 changed files with 6 additions and 27 deletions

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drivers/iommu/arm-smmu-v3.c

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