Re: io_apic & timer_ack fix

From: Maciej W. Rozycki
Date: Wed Apr 14 2004 - 05:16:12 EST


On Tue, 13 Apr 2004, Jon Grimm wrote:

> I 've been running the patch on a 2.4.21 code base. I note that
> /proc/interrupts shows NMI interrupts coming in fast and furious, where
> without it there were none. I'm not sure what to think of this.

This is the NMI watchdog -- an aid to debug lock-ups. You can control it
with the "nmi_watchdog=" kernel option -- see documentation. I suppose
without the timer_ack change the watchdog wouldn't work for some reason
-- perhaps due to problems with your 8259A core or with the SMM.

--
+ Maciej W. Rozycki, Technical University of Gdansk, Poland +
+--------------------------------------------------------------+
+ e-mail: macro@xxxxxxxxxxxxx, PGP key available +
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