Thread (15 messages) 15 messages, 2 authors, 2012-05-10

Re: [PATCH] powerpc: use local var instead of local_paca->irq_happened directly in __check_irq_replay

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2012-05-04 00:10:35
Also in: lkml

On Fri, 2012-05-04 at 07:35 +0800, Wang Sheng-Hui wrote:
quoted
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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