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IO-APIC says: unexpected IO-APIC was found and spuirous 8259A interrupt: IRQ7

DISCUSSION AnonimoVeneziano 1 participant 1 message Jan 20, 2003

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Hi , I use on a system composed by a MSI KT4 Ultra Motherboard (KT400 - vt8235 Bios 1.3) and an Athlon XP 2400+ the kernel 2.4.21-pre3-ac4 with enabled UP-APIC and UP_IO_APIC.

When I start the system the log says:

Quoted 66 lines

00000000
CPU: AMD Athlon(tm) XP 2400+ stepping 01
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done. Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
enabled ExtINT on CPU#0
ESR value before enabling vector: 00000080
ESR value after enabling vector: 00000000
ENABLING IO-APIC IRQs
Setting 2 in the phys_id_present_map
...changing IO-APIC physical APIC ID to 2 ... ok.
init IO_APIC IRQs
IO-APIC (apicid-pin) 2-0, 2-10, 2-11, 2-17, 2-19, 2-20, 2-21, 2-22,
2-23 not connected.
..TIMER: vector=0x31 pin1=2 pin2=0
number of MP IRQ sources: 17.
number of IO-APIC #2 registers: 24.
testing the IO APIC.......................

IO APIC #2......
.... register #00: 02000000
....... : physical APIC id: 02
.... register #01: 00178003

.......     : max redirection entries: 0017
.......     : PRQ implemented: 1
.......     : IO APIC version: 0003

An unexpected IO-APIC was found. If this kernel release is less than three months old please report this to [email protected] .... IRQ redirection table:
NR Log Phy Mask Trig IRR Pol Stat Dest Deli Vect: 00 000 00 1
0 0 0 0 0 0 00

 01 001 01  0    0    0   0   0    1    1    39
 02 001 01  0    0    0   0   0    1    1    31
 03 001 01  0    0    0   0   0    1    1    41
 04 001 01  0    0    0   0   0    1    1    49
 05 001 01  0    0    0   0   0    1    1    51
 06 001 01  0    0    0   0   0    1    1    59
 07 001 01  0    0    0   0   0    1    1    61
 08 001 01  0    0    0   0   0    1    1    69
 09 001 01  0    0    0   0   0    1    1    71
 0a 000 00  1    0    0   0   0    0    0    00
 0b 000 00  1    0    0   0   0    0    0    00
 0c 001 01  0    0    0   0   0    1    1    79
 0d 001 01  0    0    0   0   0    1    1    81
 0e 001 01  0    0    0   0   0    1    1    89
 0f 001 01  0    0    0   0   0    1    1    91
 10 001 01  1    1    0   1   0    1    1    99
 11 000 00  1    0    0   0   0    0    0    00
 12 001 01  1    1    0   1   0    1    1    A1
 13 000 00  1    0    0   0   0    0    0    00
 14 000 00  1    0    0   0   0    0    0    00
 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:
IRQ0 -> 0:2
IRQ1 -> 0:1
IRQ3 -> 0:3
IRQ4 -> 0:4
IRQ5 -> 0:5
IRQ6 -> 0:6
IRQ7 -> 0:7
IRQ8 -> 0:8
IRQ9 -> 0:9
IRQ12 -> 0:12

Quoted 8 lines

IRQ13 -> 0:13
IRQ14 -> 0:14
IRQ15 -> 0:15
IRQ16 -> 0:16
IRQ18 -> 0:18
.................................... done.
Using local APIC timer interrupts.
calibrating APIC timer ...

Unexpected IO-APIC was found???

I've tried to compile the kernel without IO-APIC, with only UP-APIC, but it during the start says:

spurious 8259A interrupt: IRQ7 ????????? What does it mean??

What is my problem with APIC??

Thanks

Bye

Marcello