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authorRobin Murphy <robin.murphy@arm.com>2017-06-22 16:53:57 +0100
committerWill Deacon <will.deacon@arm.com>2017-06-23 17:58:01 +0100
commit58188afeb727e0f73706f1460707bd3ba6ccc221 (patch)
tree9fca03971c4a362fdd9476509f6e36b9c8069ca7 /drivers/iommu/Kconfig
parent523d7423e21bfe78452a640878d1de189ac45d91 (diff)
downloadblackbird-obmc-linux-58188afeb727e0f73706f1460707bd3ba6ccc221.tar.gz
blackbird-obmc-linux-58188afeb727e0f73706f1460707bd3ba6ccc221.zip
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>
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