Re: [PATCH 3/4] x86/asm: Add asm macros for static keys/jump labels

From: Peter Zijlstra
Date: Mon Nov 09 2015 - 04:48:55 EST

On Sat, Nov 07, 2015 at 10:16:37AM -0800, Andy Lutomirski wrote:

> >> Unfortunately, these only work if HAVE_JUMP_LABEL ....
> Yeah, I don't really like that either. I think that the real fix
> would be to compile in the runtime jump label bits unconditionally.
> Admittedly it would bloat the kernel image a little bit for
> !CONFIG_JUMP_LABEL or if build with an older gcc, and that's even less
> appropriate for 4.4 at this point. Peter?

That is a _lot_ of code for just one user. I'll bet the tiny people
won't be happy about that.

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