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Subject: Re: Athlon problem report summary
To: lkml@sigkill.net (Disconnect)
Date: Sat, 21 Apr 2001 01:28:28 +0100 (BST)
Cc: alan@lxorguk.ukuu.org.uk (Alan Cox), linux-kernel@vger.kernel.org
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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> Oddness. Is it all on that same via chipset? (I have seen some reports of
> the same chipset working on other mobos.)

Variants of the VIA chipset. But I have reports of works/not working from
the same board even.

> Is there a way to enable everything-K7-except-MMX? (Or, for that matter,
> an easy way to see what K7 does that K6 doesn't.)

K7 optimisation basically enabled the MMX copy/clear code which adds 30-40%
performance to those functions. It also materially ups the maximum memory
bandwidth the processor will use which may be where the fun starts.



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