Messages in this thread |  | | | Date | Thu, 10 Jun 2010 23:18:06 -0700 | | From | "H. Peter Anvin" <> | | Subject | Re: [PATCH 03/13] jump label v9: x86 support |
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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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