CONFIG_DMAR: Support for DMA Remapping Devices

General informations

The Linux kernel configuration item CONFIG_DMAR has multiple definitions:

Support for DMA Remapping Devices found in drivers/iommu/Kconfig

The configuration item CONFIG_DMAR:

• prompt: Support for DMA Remapping Devices
• type: bool
• depends on: CONFIG_PCI_MSI && CONFIG_ACPI && ( CONFIG_X86 || CONFIG_IA64_GENERIC )
• defined in drivers/iommu/Kconfig
• found in Linux kernels: 3.1

Help text

DMA remapping (DMAR) devices support enables independent address translations for Direct Memory Access (DMA) from devices. These DMA remapping devices are reported via ACPI tables and include PCI device scope covered by these DMA remapping devices.

Support for DMA Remapping Devices (EXPERIMENTAL) found in arch/x86/Kconfig

The configuration item CONFIG_DMAR:

• prompt: Support for DMA Remapping Devices (EXPERIMENTAL)
• type: bool
• depends on: CONFIG_PCI_MSI && CONFIG_ACPI && CONFIG_EXPERIMENTAL
• defined in arch/x86/Kconfig
• found in Linux kernels: 2.6.24–2.6.39, 3.0

Help text

DMA remapping (DMAR) devices support enables independent address translations for Direct Memory Access (DMA) from devices. These DMA remapping devices are reported via ACPI tables and include PCI device scope covered by these DMA remapping devices.

Support for DMA Remapping Devices (EXPERIMENTAL) found in arch/ia64/Kconfig

The configuration item CONFIG_DMAR:

• prompt: Support for DMA Remapping Devices (EXPERIMENTAL)
• type: bool
• depends on: CONFIG_IA64_GENERIC && CONFIG_ACPI && CONFIG_EXPERIMENTAL
• defined in arch/ia64/Kconfig
• found in Linux kernels: 2.6.28–2.6.39, 3.0

Help text

DMA remapping (DMAR) devices support enables independent address translations for Direct Memory Access (DMA) from devices. These DMA remapping devices are reported via ACPI tables and include PCI device scope covered by these DMA remapping devices.

Hardware

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