From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@infradead.org>
Date: Mon, 12 Dec 2005 13:39:26 +0000
Subject: Re: [BUG] Variable stopmachine_state should be volatile
Message-Id: <20051212133926.GA23908@infradead.org>
List-Id: <linux-ia64.vger.kernel.org>
References: <8126E4F969BA254AB43EA03C59F44E8404210E76@pdsmsx404>
In-Reply-To: <8126E4F969BA254AB43EA03C59F44E8404210E76@pdsmsx404>
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To: "Zhang, Yanmin" <yanmin.zhang@intel.com>
Cc: Arjan van de Ven <arjan@infradead.org>, Pavel Machek <pavel@ucw.cz>, linux-kernel@vger.kernel.org, "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>, "Shah, Rajesh" <rajesh.shah@intel.com>, linux-ia64@vger.kernel.org

> You are right. I hit the problem when I compiled kernel 2.6.9 on IA64 by intel compiler.
> cpu_relax has the compiler barrier if we use gcc, but cpu_relax becomes just ia64_hint which is null when I use intel compiler to compile kernel on ia64. file include/asm-ia64/intel_intrin.h defines ia64_hint as null.

Please report all bugs using ICC to intel.  We can't and don't want to debug
this mess.