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    SubjectRe: [PATCH 03/13] jump label v9: x86 support
    On 06/10/2010 05:14 AM, Ingo Molnar wrote:
    >
    > * Peter Zijlstra <peterz@infradead.org> wrote:
    >
    >> On Wed, 2010-06-09 at 17:39 -0400, Jason Baron wrote:
    >>> + select HAVE_ARCH_JUMP_LABEL if !CC_OPTIMIZE_FOR_SIZE
    >>
    >> That deserves a comment somewhere, it basically makes OPTIMIZE_FOR_SIZE
    >> useless...
    >
    > Hm, we need more than a comment for that - distros enable CC_OPTIMIZE_FOR_SIZE
    > all the time, for the massive kernel image (and hotpath cache footprint)
    > savings. Is this fixable?
    >

    Actually the current reports from the gcc community is that gcc 4.5.0 +
    -Os produces a broken kernel even without asm goto:

    http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44129

    --
    H. Peter Anvin, Intel Open Source Technology Center
    I work for Intel. I don't speak on their behalf.



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