SMP support for XLR processors.

C. Jayachandran c.jayachandran at
Mon Apr 19 13:57:56 UTC 2010

On Mon, Apr 19, 2010 at 6:43 PM, Randall Stewart <rrs at> wrote:
> JC I will give it a whirl..
> There are other issues though...
> I tried with only 16 processors and a LOT of erratic things occur.
> I will apply your patch and then I am going to start
> working on being able to bring up only 1 thread on each
> core...
> I think some of the problems I am seeing are coming from threads
> getting a bit cross with each other.. but I can't prove that
> unless I can set the mask up
> 0x11111111
> and right now when I try that we panic :-)

I have a possible cause for the panic with invariants - we should not
schedule the msgring threads unless the smp is completely up. I guess
we start getting message ring interrupts on before the message ring
threads can be scheduled.  I am trying out some changes for this -
will send you a patch if this fixes it.


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