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To: Andi Kleen <ak@suse.de>
Cc: patches@x86-64.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH]: x86_64: Remove unnecessary cast in prefetch()
References: <87tzq7cwnt.fsf@depni.sinp.msu.ru> <200709070818.03995.ak@suse.de>
From: Serge Belyshev <belyshev@depni.sinp.msu.ru>
Date: Sat, 15 Sep 2007 10:40:26 +0400
In-Reply-To: <200709070818.03995.ak@suse.de> (Andi Kleen's message of "Fri\, 7 Sep 2007 08\:18\:03 +0100")
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Andi Kleen <ak@suse.de> writes:

>> This can be fixed better by using gcc's __builtin_prefetch().
>
> I changed it to just use that. Thanks.
>
> It seems like gcc 3.1/3.2 already supported it and that's the earliest gcc
> still supported so it can be used unconditionally.
>

Hi!

Will you submit this patch for inclusion into 2.6.23?  It is important
to make kernel work with GCC 4.3 and above.  (Also note that gcc 4.2 already
smart enough to break that code, but kernel is just lucky currently).