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    SubjectRe: [PATCH 01/34] AMD IOMMU: add Kconfig entry
    On Fri, Jun 27, 2008 at 04:47:29PM +0200, Andi Kleen wrote:

    > Also it should ideally describe that there is a trade off between
    > reliability and performance with IOMMU enabled.

    I agree that there's a performance tradeoff with current generation
    hardware and ingerfaces, but it wouldn't be fair to single out a
    single IOMMU implementation ;=)

    config DMAR
    bool "Support for DMA Remapping Devices (EXPERIMENTAL)"
    depends on X86_64 && PCI_MSI && ACPI && EXPERIMENTAL
    help
    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.

    Cheers,
    Muli


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