linux-kernel - Re: [PATCH] x86: K8, GEODE_LX, CRUSOE, EFFICEON and CORE2 support the cmovxx instructions.

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Message-ID: <20080321123810.GM25225@elte.hu>
Date:	Fri, 21 Mar 2008 13:38:10 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Alexander van Heukelum <heukelum@...lshack.com>
Cc:	Willy Tarreau <w@....eu>,
	Alexander van Heukelum <heukelum@...tmail.fm>,
	"H. Peter Anvin" <hpa@...or.com>, Andi Kleen <andi@...stfloor.org>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: K8, GEODE_LX, CRUSOE, EFFICEON and CORE2 support
	the cmovxx instructions.

* Alexander van Heukelum <heukelum@...lshack.com> wrote:

> x86: K8, GEODE_LX, CRUSOE, EFFICEON and CORE2 support CMOV.
> 
> Instead of summing up the cpu's that have support for the
> cmov instruction, sum up the cpu's that don't.
> 
> GEODE_LX has no entry in arch/x86/Makefile_32.cpu, so it did not get 
> any -march or -mtune arguments at all. I quite arbitrarily added 
> -march=i686 -mtune=pentium-mmx. This way gcc is allowed to use cmov 
> instructions.

thanks, applied.

	Ingo
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