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Date:      Tue, 5 Feb 2002 16:30:44 +0100
From:      Cliff Sarginson <cliff@raggedclown.net>
To:        freebsd-questions@freebsd.org
Subject:   Re: Does this affect FreeBSD?
Message-ID:  <20020205153044.GB2251@raggedclown.net>
In-Reply-To: <3C5FF7A5.7000805@cs.rutgers.edu>
References:  <3C5FF7A5.7000805@cs.rutgers.edu>

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On Tue, Feb 05, 2002 at 10:17:57AM -0500, Aniruddha Bohra wrote:
> Hi
>    Came across this while trying to find why my computer spontaneously 
> reboots.
> Apparently there is some bug/feature in the AMD Athlon chip which 
> interacts with
> the graphics card to cause the reboot. Does this affect the FreeBSD 
> systems as well?
> 
> http://www.theregister.co.uk/content/3/23749.html
> 
> AMD concludes:- "Our conclusion is that the operating system is
> creating coherency problems within the system by creating cacheable
> translation to AGP GART-mapped physical memory...
> When the cache-line eviction occurs the stale data written to
> physical memory has fatal side effects."

Or translated.
There is no problem with the chip.
Just the all the O/S'es that want to use it.

This is the "Is it me or the rest of the army that is out of step"
problem.

-- 
Regards
Cliff



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