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Subjectspurious APIC interrupt, ayiee, should never happen
In kernels 102, 103, and 104-1 (SMP) I've been getting these messages
repeatedly.

/proc/interrupts:
CPU0 CPU1
0: 41574 111 XT-PIC timer
1: 1570 1638 IO-APIC-edge keyboard
2: 0 0 XT-PIC cascade
3: 8014 5914 IO-APIC-edge serial
4: 6 0 IO-APIC-edge serial
5: 14654 9534 IO-APIC-edge busmouse
8: 1 0 IO-APIC-edge rtc
10: 0 2 IO-APIC-edge soundblaster
12: 82 43 IO-APIC-edge 3c509
13: 1 0 XT-PIC fpu
19: 9609 9607 IO-APIC-level aic7xxx
NMI: 0
IPI: 0

Before this, I never got any timer interrupts on CPU1, so I assume those
are
the interrupts causing this message. They climb over time, but at a much
slower
rate than CPU0.

It doesn't seem to cause any problems, but it does get rather annoying.

The relevant boot info is (under 103):

mtrr: v1.20 (19980502) Richard Gooch (rgooch@atnf.csiro.au)
CPU0: Intel Pentium Pro stepping 02
calibrating APIC timer ...
..... CPU clock speed is 166.1989 MHz.
..... APIC bus clock speed is 66.4793 MHz.
Booting processor 1 eip 2000
Calibrating delay loop... 165.89 BogoMIPS
OK.
CPU1: Intel Pentium Pro stepping 09
<6>Total of 2 processors activated (331.78 BogoMIPS).
enabling Symmetric IO mode ... ...done.
ENABLING IO-APIC IRQs
init IO_APIC IRQs
IO-APIC pin 0, 9, 11, 15, 16, 17, 21, 22, 23 not connected.
..MP-BIOS bug: 8254 timer not connected to IO-APIC
..trying to set up timer as ExtINT ... .. (found pin 0) ... works.
nr of MP irq sources: 17.
nr of IO-APIC registers: 24.
testing the IO APIC.......................
.... register #00: 02000000
....... : physical APIC id: 02
.... register #01: 00170011
....... : max redirection entries: 0017
....... : IO APIC version: 0011
.... register #02: 00000000
....... : arbitration: 00
.... IRQ redirection table:
NR Log Phy Mask Trig IRR Pol Stat Dest Deli Vect:
00 0FF 0F 0 0 0 0 0 1 7 51
01 0FF 0F 0 0 0 0 0 1 1 59
02 0FF 0F 0 0 0 0 0 1 1 51
03 0FF 0F 0 0 0 0 0 1 1 69
04 0FF 0F 0 0 0 0 0 1 1 71
05 0FF 0F 0 0 0 0 0 1 1 79
06 0FF 0F 0 0 0 0 0 1 1 81
07 0FF 0F 0 0 0 0 0 1 1 89
08 0FF 0F 0 0 0 0 0 1 1 91
09 000 00 1 0 0 0 0 0 0 00
0a 0FF 0F 0 0 0 0 0 1 1 A1
0b 000 00 1 0 0 0 0 0 0 00
0c 0FF 0F 0 0 0 0 0 1 1 B1
0d 000 00 1 0 0 0 0 0 0 00
0e 0FF 0F 0 0 0 0 0 1 1 C1
0f 000 00 1 0 0 0 0 0 0 00
10 000 00 1 0 0 0 0 0 0 00
11 000 00 1 0 0 0 0 0 0 00
12 0FF 0F 0 1 0 1 0 1 1 E1
13 0FF 0F 0 1 0 1 0 1 1 E9
14 0FF 0F 0 0 0 0 0 1 1 C9
15 000 00 1 0 0 0 0 0 0 00
16 000 00 1 0 0 0 0 0 0 00
17 000 00 1 0 0 0 0 0 0 00
IRQ to pin mappings:
0->2 1->1 2->-1 3->3 4->4 5->5 6->6 7->7 8->8 9->-1 10->10 11->-1 12->12
13->13 14->14 15->20 16->-1 17->-1 18->18 19->19 20->-1 21->-1 22->-1
23->-1
.................................... done.
PCI: PCI BIOS revision 2.10 entry at 0xfdba1
PCI: Probing PCI hardware
PCI->APIC IRQ transform: (B0,I19,P0) -> 18
PCI->APIC IRQ transform: (B0,I20,P0) -> 19
PCI: 00:00 [8086/1237]: Passive release enable (00)
PIIX3: Enabling Passive Release

Thanks,

Ben

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