Re: [PATCH -tip] x86/mce: Use atomic_inc_return barrier when starting monad sync

From	Borislav Petkov <bp@alien8.de>
Newsgroups	linux.kernel
Subject	Re: [PATCH -tip] x86/mce: Use atomic_inc_return barrier when starting monad sync
Date	2016-03-23 09:40 +0100
Message-ID	<rfMuD-KQ-7@gated-at.bofh.it> (permalink)
References	<rfhqO-4cX-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Mon, Mar 21, 2016 at 04:19:56PM -0700, Davidlohr Bueso wrote:
> mce_start() has an explicit smp_wmb to serialize writes to
> global_nwo and mce_callin. However, atomic_inc_return() implies
> barriers on both sides of the call, as such simply rely on this
> full smp barrier.
> 
> Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
> ---
>  arch/x86/kernel/cpu/mcheck/mce.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Applied, thanks.

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.

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[PATCH -tip] x86/mce: Use atomic_inc_return barrier when starting monad sync Davidlohr Bueso <dave@stgolabs.net> - 2016-03-22 00:30 +0100
  Re: [PATCH -tip] x86/mce: Use atomic_inc_return barrier when  starting monad sync Borislav Petkov <bp@alien8.de> - 2016-03-23 09:40 +0100

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