Subject: Re: Continued problems with SMP on NetBSD/alpha
To: Michael L. Hitch <mhitch@lightning.msu.montana.edu>
From: Tonnerre LOMBARD <tonnerre@thebsh.sygroup.ch>
List: port-alpha
Date: 12/23/2006 22:13:19
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Salut,

On Wed, Dec 20, 2006 at 11:17:11AM -0700, Michael L. Hitch wrote:
>   I had some problems with my CS20 getting into a deadlock with interrupts
> disabled, so I couldn't break into DDB from the console, and the only recourse
> I had was to cycle power.  Later, I finally located the halt switch, and using
> that was able to halt ot the SRM, which also displayed the program counter of
> one of the CPUs.  From the SRM, I could use the 'continue' command to get back
> into the kernel and DDB and poke around from there.  I was finally able to
> determine where it was deadlocked (I think I had to eventually enable LOCKDEBUG
> to get more information) and was able to come up with a fix.  After that
> deadlock got fixed, and the problem with the FP IPP sutff was fixed, both my
> CS20 systems have been happily running MP.  One has been running 3.0_STABLE for
> over 307 days.
> The other only has 5 days of uptime because I upgraded the disk in it a few
> weeks back, and have been testing more recent kernels on it (it's currently
> running a 4.0_BETA kernel from the original 4.0 branch - I haven't gotten
> around to updating it to the latest 4.0 branch yet).

Is there any chance to get hold of this fix for some further testing?

				Tonnerre

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