Re: P6 bug?!

Leonard N. Zubkoff (
Tue, 8 Apr 1997 22:50:02 -0700

Date: Wed, 9 Apr 1997 05:40:54 +0200 (MET DST)
From: Chris Dee <>

Could somebody please tell me what this means:

Ignoring P6 Local APIC Spurious Interrupt Bug...

Is there a problem with the P6? Or with the board? If it's a problem with
the P6, do all P6's have this problem? Does this bug affect the system in
any way?

It's a problem with the Local APIC on most steppings of the Pentium Pro CPU.
Specifically, a spurious interrupt is delivered as an exception 15 (a reserved
code) rather than as interrupt 15. The bug is benign, so long as the kernel
ignores the exception 15.

Is it a problem to comment out the line in the kernel that shows this
message? It's messing up the display.

You can safely comment it out.