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Date:      Wed, 04 Mar 1998 21:34:26 -0800 (PST)
From:      Simon Shapiro <shimon@simon-shapiro.org>
To:        Nate Williams <nate@mt.sri.com>
Cc:        current@FreeBSD.ORG, Mike Smith <mike@smith.net.au>
Subject:   Re: silo overflows (Was Re: 3.0-RELEASE?)
Message-ID:  <XFMail.980304213426.shimon@simon-shapiro.org>
In-Reply-To: <199803050520.WAA16381@mt.sri.com>

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On 05-Mar-98 Nate Williams wrote:
>> > However the driver has no say in the matter when _someone_else_ 
>> > disables interrupts for a long period of time, or when the hardware 
>> > fails to deliver them in the first place.
>> 
>> Unless I misunderstand something, the driver should get interrupts
>> delivered, unless another part of the kernel is in spltty(), or another
>> spl
>> which masks spltty.  There should not be all that many of those, and
>> they
>> should be considered carefully.  
> 
> I can tell you that uniquivocally XFree86 causes this to happen.  Why, I
> don't know, but it's definitely X related.  If I don't use X and the
> machine gets the same traffic, I get the messages.  If I switch from
> XFree8 to XIG, the messages go away.
> 
> What is causing the interrupts to go away, I don't know, but it might be
> syscons or something.  I'm not switching vty's, and neither am I hitting
> the caps-lock or causing the LED's to switch.
> 
> But, it occurs none-the-less. 

I am guessing it is something to do with the S3 chip.  The Mach64 I finally
pulled out was much worse.  It would die/kill serial ports.  I think the
problem is there and in the FAST_INTR stuff.  Now I am going to get myself
in trouble all over again :-)

Simon



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