IO-APIC says: unexpected IO-APIC was found

[AnonimoVeneziano <voloterreno@tin.it>]

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:

> 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 linux-smp@vger.kernel.org
> .... 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
> 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