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(parent: 523d742) | patch
iommu/arm-smmu-v3: Remove io-pgtable spinlock
authorRobin Murphy <robin.murphy@arm.com>
Thu, 22 Jun 2017 15:53:57 +0000 (16:53 +0100)
committerWill Deacon <will.deacon@arm.com>
Fri, 23 Jun 2017 16:58:01 +0000 (17:58 +0100)
commit58188afeb727e0f73706f1460707bd3ba6ccc221
tree9fca03971c4a362fdd9476509f6e36b9c8069ca7tree | snapshot
parent523d7423e21bfe78452a640878d1de189ac45d91commit | diff
iommu/arm-smmu-v3: Remove io-pgtable spinlock

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>
drivers/iommu/arm-smmu-v3.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git