From mboxrd@z Thu Jan  1 00:00:00 1970
From: Will Deacon <will.deacon@arm.com>
Subject: Re: [PATCH] locking/xchg/alpha: Remove memory barriers from the
 _local() variants
Date: Wed, 28 Feb 2018 10:58:11 +0000
Message-ID: <20180228105810.GB7681@arm.com>
References: <1519704058-13430-1-git-send-email-parri.andrea@gmail.com>
 <20180227200830.GA3164@andrea>
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To: Andrea Parri <parri.andrea@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>, Peter Zijlstra <peterz@infradead.org>, linux-kernel@vger.kernel.org, "Paul E . McKenney" <paulmck@linux.vnet.ibm.com>, Alan Stern <stern@rowland.harvard.edu>, Andrew Morton <akpm@linux-foundation.org>, Ivan Kokshaysky <ink@jurassic.park.msu.ru>, Linus Torvalds <torvalds@linux-foundation.org>, Matt Turner <mattst88@gmail.com>, Richard Henderson <rth@twiddle.net>, Thomas Gleixner <tglx@linutronix.de>, linux-alpha@vger.kernel.org

On Tue, Feb 27, 2018 at 09:08:31PM +0100, Andrea Parri wrote:
> [+ Will]
> 
> I'm not sure how this happened; Will, you at least figure as Reported-by: ;-)

Thanks, this looks better to me. Have you build an Alpha kernel to check
that the various cmpxchg variants are producing the expected asm?

Will