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iommu: Remove the ->map_sg indirection

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All iommu drivers use the default_iommu_map_sg implementation, and there
is no good reason to ever override it.  Just expose it as iommu_map_sg
directly and remove the indirection, specially in our post-spectre world
where indirect calls are horribly expensive.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Christoph Hellwig
2018-07-30 09:36:26 +02:00
committed by Joerg Roedel
parent 58d1131777
commit d88e61faad
16 changed files with 5 additions and 31 deletions
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drivers/iommu/tegra-gart.c
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@@ -377,7 +377,6 @@ static const struct iommu_ops gart_iommu_ops = {
.remove_device = gart_iommu_remove_device,
.device_group = generic_device_group,
.map = gart_iommu_map,
.map_sg = default_iommu_map_sg,
.unmap = gart_iommu_unmap,
.iova_to_phys = gart_iommu_iova_to_phys,
.pgsize_bitmap = GART_IOMMU_PGSIZES,