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    SubjectRe: 2.1.111: IDE DMA disabled?
       Date: 	Sat, 25 Jul 1998 18:22:49 -0700 (PDT)
    From: Linus Torvalds <>

    Personally, I never understood why DMA was enabled by default
    anyway. As far as I can tell the only sane thing is to have it
    always disabled by default, and enable it with hdparm.

    True, but still leave this as a compile time option so that other
    architectures (where the scope of possible chipsets etc. are known and
    well bounded wrt. to quality and reliability when DMA is enabled) can
    have it enabled by default if they so wish.

    David S. Miller

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