Re: lockdep and threaded IRQs (was: ...)

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> _without_ IRQF_ENABLED: where an IRQ handler can take a long 
> time to execute, the handler can be converted to a threaded IRQ 
> handler - where it's fine to enable IRQs as there are no stack 
> nesting issues.

Only if you can mask the interrupt on the APIC without losing it or
having the APIC throw a fit.
 
> So there's no real technical problem here.

In the long term no - but forcing people to make sudden changes to
critical I/O drivers isn't the right way to do it.
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