On Fri, 2009-11-06 at 10:20 +0100, Richard Cochran wrote:
> On Fri, Nov 06, 2009 at 09:26:58AM +0100, Philippe Gerum wrote:
> > Ouch. I just can't believe this went unnoticed for that long... Well, no
> > wonder why then, the critical IPI never gets registered, so never
> > detected by the pipeline core in __ipipe_grab_irq. Thanks for the heads
> > up.
> >
> > This may make things work a little better:
>
> Yes, works fine now. Thanks for your help.
Well, thank you for digging this issue, first.
>
> Richard
>
> > diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
> > index 8968b24..a4fe229 100644
> > --- a/arch/powerpc/kernel/smp.c
> > +++ b/arch/powerpc/kernel/smp.c
> > @@ -164,16 +164,16 @@ int smp_request_message_ipi(int virq, int msg)
> > if (msg < 0 || msg > PPC_MSG_DEBUGGER_BREAK) {
> > return -EINVAL;
> > }
> > -#if !defined(CONFIG_DEBUGGER) && !defined(CONFIG_KEXEC)
> > - if (msg == PPC_MSG_DEBUGGER_BREAK) {
> > - return 1;
> > - }
> > -#endif
> > #ifdef CONFIG_IPIPE
> > if (msg == PPC_MSG_DEBUGGER_BREAK)
> > /* Piggyback the debugger IPI for the I-pipe. */
> > __ipipe_register_ipi(virq);
> > #endif
> > +#if !defined(CONFIG_DEBUGGER) && !defined(CONFIG_KEXEC)
> > + if (msg == PPC_MSG_DEBUGGER_BREAK) {
> > + return 1;
> > + }
> > +#endif
> >
> > err = request_irq(virq, smp_ipi_action[msg], IRQF_DISABLED|IRQF_PERCPU,
> > smp_ipi_name[msg], 0);
> >
> > --
> > Philippe.
> >
> >
--
Philippe.
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