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Directory : /proc/thread-self/root/lib/modules/5.15.0-1084-aws/build/drivers/iommu/amd/

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Current File : /proc/thread-self/root/lib/modules/5.15.0-1084-aws/build/drivers/iommu/amd/Kconfig

# SPDX-License-Identifier: GPL-2.0-only
# AMD IOMMU support
config AMD_IOMMU
	bool "AMD IOMMU support"
	select SWIOTLB
	select PCI_MSI
	select PCI_ATS
	select PCI_PRI
	select PCI_PASID
	select IOMMU_API
	select IOMMU_IOVA
	select IOMMU_DMA
	select IOMMU_IO_PGTABLE
	depends on X86_64 && PCI && ACPI && HAVE_CMPXCHG_DOUBLE
	help
	  With this option you can enable support for AMD IOMMU hardware in
	  your system. An IOMMU is a hardware component which provides
	  remapping of DMA memory accesses from devices. With an AMD IOMMU you
	  can isolate the DMA memory of different devices and protect the
	  system from misbehaving device drivers or hardware.

	  You can find out if your system has an AMD IOMMU if you look into
	  your BIOS for an option to enable it or if you have an IVRS ACPI
	  table.

config AMD_IOMMU_V2
	tristate "AMD IOMMU Version 2 driver"
	depends on AMD_IOMMU
	select MMU_NOTIFIER
	help
	  This option enables support for the AMD IOMMUv2 features of the IOMMU
	  hardware. Select this option if you want to use devices that support
	  the PCI PRI and PASID interface.

config AMD_IOMMU_DEBUGFS
	bool "Enable AMD IOMMU internals in DebugFS"
	depends on AMD_IOMMU && IOMMU_DEBUGFS
	help
	  !!!WARNING!!!  !!!WARNING!!!  !!!WARNING!!!  !!!WARNING!!!

	  DO NOT ENABLE THIS OPTION UNLESS YOU REALLY, -REALLY- KNOW WHAT YOU ARE DOING!!!
	  Exposes AMD IOMMU device internals in DebugFS.

	  This option is -NOT- intended for production environments, and should
	  not generally be enabled.

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