• Dave Hansen's avatar
    [PATCH] unify PFN_* macros · 22a9835c
    Dave Hansen authored
    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: default avatarDave Hansen <haveblue@us.ibm.com>
    Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
init.c 7.9 KB