CONFIG_IOMMU: IOMMU support

General informations

The Linux kernel configuration item CONFIG_IOMMU:

• prompt: IOMMU support
• type: bool
• depends on: ( CONFIG_EMBEDDED ) && ( CONFIG_PCI )
• defined in arch/x86_64/Kconfig
• found in Linux kernels: 2.6.18–2.6.23

Help text

Support for full DMA access of devices with 32bit memory access only on systems with more than 3GB. This is usually needed for USB, sound, many IDE/SATA chipsets and some other devices. Provides a driver for the AMD Athlon64/Opteron/Turion/Sempron GART based hardware IOMMU and a software bounce buffer based IOMMU used on Intel systems and as fallback. The code is only active when needed (enough memory and limited device) unless IOMMU_DEBUG or iommu=force is specified too.

Hardware

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Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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