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Commit d88e61fa authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Joerg Roedel
Browse files

iommu: Remove the ->map_sg indirection 



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: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 58d11317

drivers/iommu/amd_iommu.c

+0 −1
Original line number Diff line number Diff line
@@ -3192,7 +3192,6 @@ const struct iommu_ops amd_iommu_ops = { 
	.detach_dev = amd_iommu_detach_device,

	.map = amd_iommu_map,

	.unmap = amd_iommu_unmap,

	.map_sg = default_iommu_map_sg,

	.iova_to_phys = amd_iommu_iova_to_phys,

	.add_device = amd_iommu_add_device,

	.remove_device = amd_iommu_remove_device,

drivers/iommu/arm-smmu-v3.c

+0 −1
Original line number Diff line number Diff line
@@ -1997,7 +1997,6 @@ static struct iommu_ops arm_smmu_ops = { 
	.attach_dev		= arm_smmu_attach_dev,

	.map			= arm_smmu_map,

	.unmap			= arm_smmu_unmap,

	.map_sg			= default_iommu_map_sg,

	.flush_iotlb_all	= arm_smmu_iotlb_sync,

	.iotlb_sync		= arm_smmu_iotlb_sync,

	.iova_to_phys		= arm_smmu_iova_to_phys,

drivers/iommu/arm-smmu.c

+0 −1
Original line number Diff line number Diff line
@@ -1562,7 +1562,6 @@ static struct iommu_ops arm_smmu_ops = { 
	.attach_dev		= arm_smmu_attach_dev,

	.map			= arm_smmu_map,

	.unmap			= arm_smmu_unmap,

	.map_sg			= default_iommu_map_sg,

	.flush_iotlb_all	= arm_smmu_iotlb_sync,

	.iotlb_sync		= arm_smmu_iotlb_sync,

	.iova_to_phys		= arm_smmu_iova_to_phys,

drivers/iommu/exynos-iommu.c

+0 −1
Original line number Diff line number Diff line
@@ -1332,7 +1332,6 @@ static const struct iommu_ops exynos_iommu_ops = { 
	.detach_dev = exynos_iommu_detach_device,

	.map = exynos_iommu_map,

	.unmap = exynos_iommu_unmap,

	.map_sg = default_iommu_map_sg,

	.iova_to_phys = exynos_iommu_iova_to_phys,

	.device_group = generic_device_group,

	.add_device = exynos_iommu_add_device,

drivers/iommu/intel-iommu.c

+0 −1
Original line number Diff line number Diff line
@@ -5308,7 +5308,6 @@ const struct iommu_ops intel_iommu_ops = { 
	.detach_dev		= intel_iommu_detach_device,

	.map			= intel_iommu_map,

	.unmap			= intel_iommu_unmap,

	.map_sg			= default_iommu_map_sg,

	.iova_to_phys		= intel_iommu_iova_to_phys,

	.add_device		= intel_iommu_add_device,

	.remove_device		= intel_iommu_remove_device,