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    SubjectRe: [PATCH] /proc/sys/kernel/pointer_size
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       From: Linus Torvalds <torvalds@transmeta.com>
    Date: Wed, 8 Jan 2003 15:04:05 -0800 (PST)

    System binaries match the kernel. It's as easy as that. So what if 90% of
    the user binaries use 32-bit mode because it's smaller and faster? We're
    talking about a system binary that is _very_ intimate with the kernel.

    oprofile can perfectly legitimately be used to monitor 32-bit binaries
    running on under a 64-bit kernel environment. In fact I expect such
    exercises to be very instructive. Anton Blanchard has done this
    already on ppc64.

    And being that 64-bit sparc systems run several orders of magnitude
    faster than 32-bit ones, I think I'd prefer to oprofile 32-bit
    programs on sparc64 boxes :-)

    Hey, if this is so distasteful we could just add a
    sys_kernel_pointer_size() to sparc64 and ppc64 and be done with it.
    The other choice, as mentioned, is to make every platform use u64's
    in the tables.
    -
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