From: Ross Dickson <ross@datscreative.com.au>
Reply-To: ross@datscreative.com.au
Organization: Dat's Creative Pty Ltd
To: Len Brown <len.brown@intel.com>, Jesse Allen <the3dfxdude@hotmail.com>
Subject: Re: IO-APIC on nforce2 [PATCH] + [PATCH] for nmi_debug=1 + [PATCH] for idle=C1halt, 2.6.5
Date: Mon, 26 Apr 2004 21:41:24 +1000
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Cc: "Prakash K. Cheemplavam" <PrakashKC@gmx.de>,
       Craig Bradney <cbradney@zip.com.au>, christian.kroener@tu-harburg.de,
       linux-kernel@vger.kernel.org, "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>,
       Jamie Lokier <jamie@shareable.org>, Daniel Drake <dan@reactivated.net>,
       Ian Kumlien <pomac@vapor.com>, a.verweij@student.tudelft.nl,
       Allen Martin <AMartin@nvidia.com>
References: <200404131117.31306.ross@datscreative.com.au> <20040422163958.GA1567@tesore.local> <1082654469.16333.351.camel@dhcppc4>
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On Friday 23 April 2004 03:21, Len Brown wrote:
> On Thu, 2004-04-22 at 12:39, Jesse Allen wrote:
> 
> > On the Shuttle AN35N, the C1 disconnect option default is auto.  If you're
> > talking about this board, or another board Shuttle seemingly fixed, then I
> > can tell you that I haven't been able to get my to hang with vanilla kernels.
> 
> Have you been able to hang the AN35N under any conditions?
> Old BIOS, non-vanilla kernel?
> 
> > As for your patch, I get a fast timer, and gain about 1 sec per 5 minutes.
> > The only patch that seemed to work without a fast timer so far was the one 
> > removed by Linus in a testing version.  The AN35N has the timer override 
> > bug.
> 
> Hmm, I didn't notice fast time on my FN41, i'll look for it.
> 
> I'm not familiar with the "one removed by Linux in a testing version",
> perhaps you could point me to that?

This is Maciej's patch - latest posting of it that I have seen,
http://linux.derkeiler.com/Mailing-Lists/Kernel/2004-04/3174.html

His fix up of the 8259 ack issue (when used without routing 8254 pit into
io-apic INTIN0) successfully establishes a virtual wire mode input of the timer
which the nforce2 seems happy with albeit without being able to use
"nmi_debug=1"

It is that timer ack issue tied up with the integrated apic.
http://linux.derkeiler.com/Mailing-Lists/Kernel/2004-04/2143.html

This refers to when it was in the 2.6.3-rc1-mm1
http://linux.derkeiler.com/Mailing-Lists/Kernel/2004-02/2658.html 

Regards
Ross.

> 
> > Attached is the dmidecode for the AN35N.
> 
> applied.
> 
> thanks,
> -Len
> 
> 
> 
> 
> 

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