On 05/03/2013 03:01:26 PM, Caraman Mihai Claudiu-B02008 wrote:
> -----Original Message-----
> From: Wood Scott-B07421
> Sent: Friday, May 03, 2013 9:05 PM
> To: Caraman Mihai Claudiu-B02008
> Cc: kvm-ppc@xxxxxxxxxxxxxxx; kvm@xxxxxxxxxxxxxxx; linuxppc-
> dev@xxxxxxxxxxxxxxxx; Caraman Mihai Claudiu-B02008
> Subject: Re: [PATCH] KVM: PPC: Book3E 64: Fix IRQs warnings and
hangs
>
> > The unresponsiveness has to do with the fact that
> > arch_local_irq_restore()
> > does not guarantees to hard enable interrupts.
>
> Could you elaborate? If the saved IRQ state was "enabled", why
> wouldn't arch_local_irq_restore() hard-enable IRQs? The last thing
it
> does is __hard_irq_enable().
if (!irq_happened)
return;
OK, so the problem is that we're not setting PACA_IRQ_HARD_DIS when we
hard-disable interrupts?
> Where is the arch_local_irq_restore() instance you're talking about?
./arch/power/kernel/irq.c
I meant the caller. :-P
-Scott
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