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    SubjectRe: data corruption with nvidia chipsets and IDE/SATA drives // memory hole mapping related bug?!
    On Mon Dec 11, 2006 at 10:24:02AM +0100, Karsten Weiss wrote:
    > We could not reproduce the data corruption anymore if we boot
    > the machines with the kernel parameter "iommu=soft" i.e. if we
    > use software bounce buffering instead of the hw-iommu.

    I just realized that booting with "iommu=soft" makes my pcHDTV
    HD5500 DVB cards not work. Time to go back to disabling the
    memhole and losing 1 GB. :-(


    Erik B. Andersen
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