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    SubjectRe: Calculating kernel logical address ..
    On Monday 09 September 2002 19:23, David S. Miller wrote:
    > From: "Richard B. Johnson" <>
    > Date: Mon, 9 Sep 2002 13:29:42 -0400 (EDT)
    > I think there is a virt_to_bus() macro and its inverse.
    > Which is deprecate and not to be used by any new code.
    > Use Documentation/DMA-mapping.txt instead.
    > If you meant virt_to_phys(), this does not work on arbitrary
    > kernel virtual addresses either only direct mapped ones
    > (ie. kmalloc() or get_free_page() data).

    In this case he starts with a kmalloc, then mmaps it somehow. Imran,
    exactly what code do you use to mmap the kmalloced memory?

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