On Wed, 2007-02-21 at 10:23 -0800, Daniel Walker wrote: > Right, but eventually there isn't a regular timer interrupt through the > io-apic. I don't think in the past IRQ0 stops without the system > crashing, so check_timer() could assume the timer (IRQ0) is _always_ > regular. > > do you know what the requirement are for routing the NMI through the > io-apic?
Sorry. I checked. switching PIT off really breaks nmi_watchdog=1, as this just mirrors IRQ#0 to the NMI. No IRQ#0 from PIT, no NMI We could keep PIT running with an empty interrupt handler when nmi_watchdog=1 is set, but this interferes nicely with broadcasting. Does nmi_watchdog=2 work ? We might switch to that, when a local APIC is available. tglx - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/