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Date: Fri, 15 Aug 2008 13:27:10 -0700
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Linus Torvalds <torvalds@linux-foundation.org>
CC: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
       Ingo Molnar <mingo@elte.hu>, Jeremy Fitzhardinge <jeremy@goop.org>,
       Harvey Harrison <harvey.harrison@gmail.com>,
       Andi Kleen <andi@firstfloor.org>, Steven Rostedt <rostedt@goodmis.org>,
       Steven Rostedt <srostedt@redhat.com>,
       LKML <linux-kernel@vger.kernel.org>,
       Thomas Gleixner <tglx@linutronix.de>,
       Peter Zijlstra <peterz@infradead.org>,
       Andrew Morton <akpm@linux-foundation.org>,
       David Miller <davem@davemloft.net>, Roland McGrath <roland@redhat.com>,
       Ulrich Drepper <drepper@redhat.com>,
       Rusty Russell <rusty@rustcorp.com.au>,
       Gregory Haskins <ghaskins@novell.com>,
       Arnaldo Carvalho de Melo <acme@redhat.com>,
       "Luis Claudio R. Goncalves" <lclaudio@uudg.org>,
       Clark Williams <williams@redhat.com>,
       Christoph Lameter <cl@linux-foundation.org>
Subject: Re: [PATCH] x86 : spinlock use LOCK_PREFIX
References: <20080814205815.GA14076@Krystal> <alpine.LFD.1.10.0808150854140.3324@nehalem.linux-foundation.org> <20080815165659.GD21138@Krystal> <alpine.LFD.1.10.0808151031310.3324@nehalem.linux-foundation.org>
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Linus Torvalds wrote:
> 
> On Fri, 15 Aug 2008, Mathieu Desnoyers wrote:
>> Unless there a rationale for this, I think these be changed to LOCK_PREFIX
>> too.
>>
>> grep "lock ;" include/asm-x86/spinlock.h
>>          "lock ; cmpxchgw %w1,%2\n\t"
>>   asm volatile("lock ; xaddl %0, %1\n"
>>          "lock ; cmpxchgl %1,%2\n\t"
> 
> Ack.
> 

Full patch series applied to tip:x86/alternatives; we'll migrate it to 
tip:x86/urgent for upstream delivery after some testing.

	-hpa