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Date:   Fri, 30 Nov 2018 15:28:52 -0500
From:   Steven Rostedt <rostedt@goodmis.org>
To:     Andy Lutomirski <luto@kernel.org>
Cc:     Linus Torvalds <torvalds@linux-foundation.org>,
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Subject: Re: [PATCH v2 4/4] x86/static_call: Add inline static call
 implementation for x86-64
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On Fri, 30 Nov 2018 12:18:33 -0800
Andy Lutomirski <luto@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