On Fri, 30 Nov 2018 12:18:33 -0800 Andy Lutomirski <l...@kernel.org> wrote:
> Or we could replace that IPI with x86's bona fide serialize-all-cpus > primitive and then we can just retry instead of emulating. It's a > piece of cake -- we just trigger an SMI :) /me runs away. I must have fallen on my head one too many times, because I really like the idea of synchronizing all the CPUs with an SMI! (If that's even possible). The IPI's that are sent are only to force smp_mb() on all CPUs. Which should be something an SMI could do. /me runs after Andy -- Steve
