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    SubjectRe: 2 switch_to() puzzles

    On Wed, 9 Dec 1998, Jamie Lokier wrote:

    > Last time I checked (GCC, declaring %ebp clobbered doesn't
    > cause GCC to save it even with -fomit-frame-pointer, so you need the
    > push/pop for that one.

    we need %ebp for the WCHAN feature in 'psutils', which is often very
    handy. (take a look at fs/proc/fd.c and array.c)

    -- mingo

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