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dma-mapping: make support for dma ops optional

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Avoid the overhead of the dma ops support for tiny builds that only
use the direct mapping.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
This commit is contained in:
Christoph Hellwig
2020-07-08 09:30:00 +02:00
parent b417417300
commit 2f9237d4f6
19 changed files with 43 additions and 6 deletions
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2
drivers/iommu/Kconfig
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@@ -97,6 +97,7 @@ config OF_IOMMU
# IOMMU-agnostic DMA-mapping layer
config IOMMU_DMA
bool
select DMA_OPS
select IOMMU_API
select IOMMU_IOVA
select IRQ_MSI_IOMMU
@@ -183,6 +184,7 @@ config DMAR_TABLE
config INTEL_IOMMU
bool "Support for Intel IOMMU using DMA Remapping Devices"
depends on PCI_MSI && ACPI && (X86 || IA64)
select DMA_OPS
select IOMMU_API
select IOMMU_IOVA
select NEED_DMA_MAP_STATE