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    SubjectRe: [patch 0/8] [Intel IOMMU] Support for Intel Virtualization Technology for Directed I/O
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    On Tue, 2007-04-10 at 04:21 -0400, Jeff Garzik wrote:
    > Ashok Raj wrote:
    > > 1. Support for ACPI framework to parse and work with DMA Remapping Tables.
    > > 2. Add support for PCI infrastructure to search parent relationships.
    > > 3. Hardware support for providing DMA remapping support for Intel Chipsets.
    > > 4. Supporting Zero Length Reads on DMAR's not able to support ZLR.
    > > 5. Graphics driver workarounds to provide unity map since they dont use dma api.
    > > 6. Updates to Documentation area for startup options and some basics.
    > > 7. Workaround to provide unity map for ISA bridge device to enable floppy disk.
    > > 8. Ability to preserve some mappings for devices not able to address entire
    > > range.
    >
    > I really think it would be best to avoid ACPI for something as critical
    > as DMA remapping!
    DMA remapping just uses ACPI table to tell which dma remapping engine a
    pci device is controlled by at boot time. At run time, DMA remapping
    hasn't any interactive with ACPI.

    Thanks,
    Shaohua
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