CONFIG_AMD_IOMMU: AMD IOMMU support

General informations

The Linux kernel configuration item CONFIG_AMD_IOMMU has multiple definitions:

AMD IOMMU support found in drivers/iommu/amd/Kconfig

The configuration item CONFIG_AMD_IOMMU:

• prompt: AMD IOMMU support
• type: bool
• depends on: CONFIG_X86_64 && CONFIG_PCI && CONFIG_ACPI && CONFIG_HAVE_CMPXCHG_DOUBLE
• defined in drivers/iommu/amd/Kconfig
• found in Linux kernels: 5.9–5.19, 6.0–6.11, 6.12-rc+HEAD

Help text

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.

AMD IOMMU support found in drivers/iommu/Kconfig

The configuration item CONFIG_AMD_IOMMU:

• prompt: AMD IOMMU support
• type: bool
• depends on: CONFIG_X86_64 && CONFIG_PCI && CONFIG_ACPI
• defined in drivers/iommu/Kconfig
• found in Linux kernels: 3.1–3.19, 4.0–4.20, 5.0–5.8

Help text

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.

AMD IOMMU support found in arch/x86/Kconfig

The configuration item CONFIG_AMD_IOMMU:

• prompt: AMD IOMMU support
• type: bool
• depends on: CONFIG_X86_64 && CONFIG_PCI && CONFIG_ACPI
• defined in arch/x86/Kconfig
• found in Linux kernels: 2.6.27–2.6.39, 3.0

Help text

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 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.

Hardware

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The data is retrived from:

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