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Date: Sat, 20 Mar 2004 05:13:54 -0700
From: Scott Long <scottl@freebsd.org>
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To: Martin Blapp <mb@imp.ch>
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cc: current@freebsd.org
Subject: Re: Disable HTT on Serverworks GC-HE chipset
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Martin Blapp wrote:
> Hi all,
> 
> Can we add some code to disable HTT for this chipset ?
> I've seen major instability with HTT enabled and CURRENT
> or 5.2.1. This has gone now, all our 3 servers are working
> reliable.
> 
> I've been told that this chipset already had 7 revisions.
> I'd be happy to know which one works together with HTT.
> Maybe it's a similar bug as in the GC-LE chipset. Linux does
> disable cache-coalescing when HTT is used to prevent crashes.
> 
> Martin
> 

Have you determined that the instability is solely due to HTT
in particular and not SMP in general?  In other words, do you
have multiple CPUs in the system, or is it just a single CPU
with HTT?  Also, do you have the latest BIOS for your motherboard?
What stepping are your CPUs?

Scott