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    SubjectRe: User mode Virt -> Phys
    On Tue, Jan 12, 1999 at 05:23:21PM +0000, Alan Cox wrote:
    > You still don't need to do that translation for user space. Have a look
    > at Stephen Tweedie <sct@redhat.com>'s raw-io patches and DMA hooks in
    > kernel space for handling this stuff

    Yes, that sounds interesting and I will look at it as soon as I can.
    Though I suspect the I/O setup for page locking/unlocking/translation
    will be too slow if it has to be done for each read/write operation.

    My approach is for when you want to set these things up in advance, then
    use them repeatedly.

    -- Jamie

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