IO-APIC says: unexpected IO-APIC was found and spuirous 8259A interrupt: IRQ7
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 thephys_id_present_map
...changing IO-APIC physical APIC ID to 2 ... ok.
initIO_APICIRQs
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: 0003An 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 0001 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 00IRQ 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