[lkml]   [2004]   [Sep]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: lockup with voluntary preempt R0 and VP, KP, etc, disabled

* Florian Schmidt <> wrote:

> > best would be to enable the NMI watchdog (nmi_watchdog=1 (or 2) boot
> > option) - check that it's working via the attached lockupcli.c
> > userspace code (run it as root). To have an NMI watchdog you need
> > APIC/IOAPIC support in the .config.
> Hmm, my local APIC kinda sux and i had all kinds of trouble using it
> [ERR count went up, stuff didn't work; XT-PIC always worked very well
> here]. So i'm kinda reluctant to compile with APIC. I suppose i can
> compile with it but turn it off via boot option? Or does the watchdog
> need a APIC that actually does stuff?

in theory you should be able to boot with just the local APIC enabled
and "nmi_watchdog=2" and get a working NMI watchdog. You'll still have
the normal PIC IRQ handling.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 14:05    [W:0.057 / U:7.340 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site