[PATCH] arm64: barrier: implement wfe-base smp_cond_load_acquire

Peter Zijlstra peterz at infradead.org
Fri Jun 17 09:14:13 PDT 2016

On Fri, Jun 17, 2016 at 05:04:15PM +0100, Will Deacon wrote:
> To be honest, it's never been clear to me what purpose the memory clobber
> serves in cpu_relax().

Oh, that stems from before ACCESS_ONCE(), and was all that made these
wait loops work at all.

More information about the linux-arm-kernel mailing list