On Fri, 2013-09-06 at 01:06 +0200, Alexander Graf wrote: > On 06.09.2013, at 00:09, Scott Wood wrote: > > > On Thu, 2013-07-11 at 01:09 +0200, Alexander Graf wrote: > >> On 11.07.2013, at 01:08, Scott Wood wrote: > >> > >>> On 07/10/2013 06:04:53 PM, Alexander Graf wrote: > >>>> On 11.07.2013, at 01:01, Benjamin Herrenschmidt wrote: > >>>>> On Thu, 2013-07-11 at 00:57 +0200, Alexander Graf wrote: > >>>>>>> #ifdef CONFIG_PPC64 > >>>>>>> + /* > >>>>>>> + * To avoid races, the caller must have gone directly from > >>>>>>> having > >>>>>>> + * interrupts fully-enabled to hard-disabled. > >>>>>>> + */ > >>>>>>> + WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); > >>>>>> > >>>>>> WARN_ON(lazy_irq_pending()); ? > >>>>> > >>>>> Different semantics. What you propose will not catch irq_happened == 0 > >>>>> :-) > >>>> Right, but we only ever reach here after hard_irq_disable() I think. > >>> > >>> And the WARN_ON helps us ensure that it stays that way. > >> > >> Heh - ok :). Works for me. > > > > What's the status on this patch? > > IIUC it was ok. Ben, could you please verify?
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