iommu/arm-smmu-v3: Defer TLB invalidation until ->iotlb_sync()

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Update the iommu_iotlb_gather structure passed to ->tlb_add_page() and
use this information to defer all TLB invalidation until ->iotlb_sync().
This drastically reduces contention on the command queue, since we can
insert our commands in batches rather than one-by-one.

Tested-by: Ganapatrao Kulkarni  <gkulkarni@marvell.com>
Signed-off-by: Will Deacon <will@kernel.org>

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Will Deacon 2019-07-02 17:16:33 +01:00

parent 587e6c10a7

commit 2af2e72b18

1 changed files with 42 additions and 29 deletions

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drivers/iommu/arm-smmu-v3.c

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