Doug / smarc-fsl-linux-kernel

14 Sep, 2008

1 commit

  • 947d0496c   generic: make PFN_PHYS explicitly return phys_addr_t ... Browse Code »

    PFN_PHYS, as its name suggests, turns a pfn into a physical address.
    However, it is a macro which just operates on its argument without
    modifying its type. pfns are typed unsigned long, but an unsigned
    long may not be long enough to hold a physical address (32-bit systems
    with more than 32 bits of physcial address).

    Make sure we cast to phys_addr_t to return a complete result.

    Signed-off-by: Jeremy Fitzhardinge
    Signed-off-by: Ingo Molnar

    Jeremy Fitzhardinge
     

28 Mar, 2006

1 commit

  • 22a9835c3   [PATCH] unify PFN_* macros ... Browse Code »

    Just about every architecture defines some macros to do operations on pfns.
    They're all virtually identical. This patch consolidates all of them.

    One minor glitch is that at least i386 uses them in a very skeletal header
    file. To keep away from #include dependency hell, I stuck the new
    definitions in a new, isolated header.

    Of all of the implementations, sh64 is the only one that varied by a bit.
    It used some masks to ensure that any sign-extension got ripped away before
    the arithmetic is done. This has been posted to that sh64 maintainers and
    the development list.

    Compiles on x86, x86_64, ia64 and ppc64.

    Signed-off-by: Dave Hansen
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Dave Hansen