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Date: Thu, 30 Apr 2009 10:10:08 -0700
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Ingo Molnar <mingo@elte.hu>
CC: Tobias Doerffel <tobias.doerffel@gmail.com>,
       Thomas Gleixner <tglx@linutronix.de>,
       Arjan van de Ven <arjan@infradead.org>,
       Suresh Siddha <suresh.b.siddha@intel.com>,
       "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>,
       LKML <linux-kernel@vger.kernel.org>
Subject: Re: Specific support for Intel Atom architecture
References: <200904301408.09370.tobias.doerffel@gmail.com> <20090430154051.GA3346@elte.hu>
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Ingo Molnar wrote:
>> diff --git a/arch/x86/Makefile_32.cpu b/arch/x86/Makefile_32.cpu
>> index 80177ec..07a11b0 100644
>> --- a/arch/x86/Makefile_32.cpu
>> +++ b/arch/x86/Makefile_32.cpu
>> @@ -33,6 +33,7 @@ cflags-$(CONFIG_MCYRIXIII)	+= $(call cc-option,-march=c3,-march=i486) $(align)-f
>>  cflags-$(CONFIG_MVIAC3_2)	+= $(call cc-option,-march=c3-2,-march=i686)
>>  cflags-$(CONFIG_MVIAC7)		+= -march=i686
>>  cflags-$(CONFIG_MCORE2)		+= -march=i686 $(call tune,core2)
>> +cflags-$(CONFIG_MATOM)		+= -march=atom $(call tune,atom)
>>  

There should be a fallback option used here rather than requiring a new
gcc, e.g. something like:

$(call cc-option,-march=atom,-march=i686)

	-hpa
-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.