Re: mec and resets

Quoting Martin Husemann <[email protected]>:

> On Sat, Aug 02, 2008 at 10:00:17PM +0200, Jorge Acereda Maciá wrote:
>> Still, initiating it from the Mac I can crash it easily. I haven't
>> been able to copy base.tgz more than 2 times in a row.
>
> Too bad - I'll stress mine and see if I can make it die too.
>
> Is there some way to verify the watchdog is disabled? Or can we reconfigure
> it's timeout?

I'm pretty sure it is disabled. We explicitly write 0 to CRIME_CONTROL  
upon attaching crime. I'm not sure this is a good idea, though. There  
appear to be a bunch of other bits in that register aside from  
watchdog enable and I have no idea whether they should be set or not.

As for reconfiguring the timeout, I'm of the impression that the  
previous watchdog code was wrong and the comment in crimereg.h  
regarding setting CRIME_WATCHDOG to 0 to reset the counter is untrue.  
Looking at the IRIX headers, they make no mention of this and seem to  
indicate writing an explicit timeout value (0x7fff). As far as I can  
tell (and I only looked very quickly), OpenBSD and Linux don't touch  
the watchdog in any way whatsoever.

Anyway, I think it's safe to say that it's disabled now. You could  
always make crime_watchdog_reset() a no-op to be absolutely sure.

Steve