[PATCH v3] powerpc: Rework lazy-interrupt handling

[Benjamin Herrenschmidt]

On Tue, 2012-02-14 at 17:46 +1100, Benjamin Herrenschmidt wrote:
> The current implementation of lazy interrupts handling has some
> issues that this tries to address.
> 
> Except on iSeries, we don't do the various workarounds we need to
> do on re-enable when returning from an interrupt, which can do an
> implicit re-enable, and thus we may still lose or get delayed
> decrementer or doorbell interrupts.

 .../...

So we were still losing doorbells on BookE due to a st00pid thinko on my
part :-) New patch following, hopefully that one's good !

Cheers,
Ben.