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Subject: Re: [PATCH] [RFC] [2.5 i386] GCC 3.1 -march support, PPRO_FENCE
	reduction, prefetch fixes and other CPU-related changes
From: Luca Barbieri <ldb@ldb.ods.org>
To: Sebastian Droege <sebastian.droege@gmx.de>
Cc: Linux-Kernel ML <linux-kernel@vger.kernel.org>
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> is there really support for SSE prefetch in athlons _without_ SSE?!
> I don't know but this seems wrong...
Yes, according to
<http://www.amd.com/products/cpg/athlon/techdocs/pdf/22466.pdf>.
AMD added several intructions in Athlons including movntq, sfence and
prefetchnta/t0/t1/t2.
The last 4 instructions are what I call "SSE prefetch" (they could
called MMXEXT prefetch instead, but it's not much better).


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