Re: [PATCH] x86: Optimize variable_test_bit()

[Peter Zijlstra]

On Fri, May 01, 2015 at 03:02:24PM -0400, Vladimir Makarov wrote:
>   Currently LRA is used by x86/x86-64, ARM, AARCH64, s390, and MIPS.
> PPC, SH, and ARC are moving to LRA.  All other targets are still
> reload based.
> 
>   So I could implement the output reloads in LRA, probably for the
> next GCC release.  How to enable and mostly use it for multi-target
> code like the kernel is another question.

Pretty much all inline asm is in per arch code; so one arch having
different asm features than another should not be a problem at all.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/