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    SubjectRe: Does io_remap_page_range() take 5 or 6 args?
    On Wed, 18 Aug 2004, William Lee Irwin III wrote:

    > On Wed, 18 Aug 2004 13:53:38 -0700 William Lee Irwin III wrote:
    > >> Once it's decided how many it really takes, I'll fix up sparc32 as-needed.
    > On Wed, Aug 18, 2004 at 01:56:38PM -0700, David S. Miller wrote:
    > > (sorry for the emply reply previously)
    > > It needs 6 unless we start passing in a 64-bit value to
    > > io_remap_page_range()
    > > for the 'offset' parameter.
    > > Physical I/O addresses are 36-bits or so on sparc32 systems, which is
    > > why we need to pass in "offset" and "space".

    Maybe a pointer?

    > We should pass 64-bit values to remap_page_range() also, then. Or
    > perhaps passing pfn's to both suffices, as it all has to be page
    > aligned anyway.
    > -- wli

    With a pointer to some kind of descriptor (structure), the arch-dependent
    pointer size is handled by the compiler/linker and the arch-dependent
    content is handled with the arch-dependent header defining the
    structure. You get to keep both pieces and they don't break when
    porting to a new box.

    Dick Johnson
    Penguin : Linux version 2.4.26 on an i686 machine (5570.56 BogoMips).
    Note 96.31% of all statistics are fiction.

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