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usr
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src
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kernels
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4.18.0-553.157.1.el8_10.x86_64
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drivers
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iommu
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amd
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/usr/src/kernels/4.18.0-553.157.1.el8_10.x86_64/drivers/iommu/amd
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Kconfig
1510
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Makefile
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/usr/src/kernels/4.18.0-553.157.1.el8_10.x86_64/drivers/iommu/amd/Kconfig
(1510B)
# 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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