Messages in this thread | | | Date | Thu, 06 Oct 2011 11:13:50 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH RFC V2 3/5] jump_label: if a key has already been initialized, don't nop it out |
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On 10/06/2011 11:10 AM, Jason Baron wrote: > > It would be cool if we could make the total width 2-bytes, when > possible. It might be possible by making the initial 'JUMP_LABEL_INITIAL_NOP' > as a 'jmp' to the 'l_yes' label. And then patching that with a no-op at boot > time or link time - letting the compiler pick the width. In that way we could > get the optimal width... >
Yes, that would be a win just based on icache footprint alone.
-hpa
-- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.
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