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SubjectRe: Strange P6 2.0.25 syslog message

Date: Sun, 17 Nov 1996 01:01:06 -0500 (EST)
From: Chris Griffin <boozer@vanadium.rollins.edu>

This message showed up in my syslog today. I am running 2.0.25 SMP/ Dual
Pro 200. Any idea what it means?

Nov 16 19:29:44 newton kernel: Ignoring P6 Local APIC Spurious Interrupt Bug...

I wrote the patch... The P6 CPU has a bug whereby a spurious interrupt may be
delivered as an exception 15 trap rather than an interrupt 15. Spurious
interrupts are a normal part of system operation and occur from time to time.
The above message means that one of these exception 15 traps occurred. Had the
new handler not been in place, you'd either have received a "reserved" trap
message if you were running in the kernel, or the running user process would
have received a SEGV without further comment. This latter case was
particularly insidious, since it makes your system look flakey or like it has
bad memory.

Leonard

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