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SubjectRe: Possibly SATA related freeze killed networking and RAID
Phillip Susi wrote:
> Tejun Heo wrote:
>> Agreed. Nobody cared on ATA controllers is usually very effective at
>> taking the whole machine down. Is there any reason why we don't turn on
>> irqpoll on turned off IRQs automatically?
>
> Why does a single spurious interrupt cause it to be shut down? I can
> see if the interrupt is stuck on and keeps interrupting constantly, but
> if it's just the occasional spurious interrupt, why not just ignore it
> and move on?

I'm not certain offhand, but I think there may be such a threshold.
However, an occasional spurious interrupt isn't likely. For a
level-triggered interrupt, an unhandled interrupt will keep interrupting
forever since nobody knows how to clear it (until we decide to disable
the IRQ entirely).

--
Robert Hancock Saskatoon, SK, Canada
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Home Page: http://www.roberthancock.com/

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