On Fri, 2012-05-04 at 07:35 +0800, Wang Sheng-Hui wrote:
> > No, Only comment the test, you must absolutely leave the
> > __hard_irq_disable() call ! That's the whole point of the test, make
> > sure we unconditionally disable to see if that fixes the problem, in
> > which case that will tell us that we somewhere accidentally leave
> > irq_happened set to 0x01 while irqs are hard enabled.
> 
> It can work.
> My system has been running for about 15 hours without crash.

Ok, so now we need to understand under what circumstances we end up
in a situation where paca->irq_happened is 0x01 and IRQs are hard
enabled. I have a few ideas of things to look at but I'm also off
for the week-end.

I'll have a look next week.

Cheers,
Ben.


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