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Date: Tue, 31 May 2011 10:10:31 -0500 (CDT)
From: Christoph Lameter <cl@linux.com>
Subject: Re: [slubllv5 07/25] x86: Add support for cmpxchg_double
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To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>, David Rientjes <rientjes@google.com>, Eric Dumazet <eric.dumazet@gmail.com>, linux-mm@kvack.org, Thomas Gleixner <tglx@linutronix.de>

On Thu, 26 May 2011, H. Peter Anvin wrote:

> On 05/26/2011 02:16 PM, Christoph Lameter wrote:
> > +	asm volatile(LOCK_PREFIX_HERE "lock; cmpxchg16b (%%rsi);setz %1" \
>
> Just spotted this: LOCK_PREFIX_HERE "lock; " is kind of redundant, no?

cmpxchg_386 does that too. Got it from there I guess.

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