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The Linux kernel configuration item CONFIG_INTEL_IOMMU
has multiple definitions:
drivers/iommu/intel/Kconfig
The configuration item CONFIG_INTEL_IOMMU:
CONFIG_PCI_MSI && CONFIG_ACPI && CONFIG_X86
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.
drivers/iommu/Kconfig
The configuration item CONFIG_INTEL_IOMMU:
CONFIG_PCI_MSI && CONFIG_ACPI && ( CONFIG_X86 || CONFIG_IA64 )
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.
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