Re: An unexpected IO-APIC was found

On Sat, 18 Mar 2006 11:23:11 +0100 Andreas Schenk wrote:

> Hi,
> 
> although my kernel release is more than three months old, I dare to send this 
> report, since it might nevertheless be of some value. I do not understand 
> what it is about, though, but I do know a little about APIC. 
> 
> If it is not too much, please let me know, if this mail is of some value and 
> -- if this is still not too much -- give me some explanation, or a link.

This has been fixed for several years now.
In this case (this specific hardware chipset), register 2 is a
duplicate of register 1 so it is skipped.
This isn't causing any run-time problems.

> Thanks
> 
> Andreas Schenk
> 
> I have SuSE linux 9.0, with kernel 
> 
> <4>Linux version 2.4.21-273-smp4G (root@dilbert) (gcc-Version 3.3.1 (SuSE 
> Linux)) #1 SMP So Apr 10 10:58:58 CEST 2005
> 
> [...]
> 
> <4>ENABLING IO-APIC IRQs
> <7>init IO_APIC IRQs
> <7> IO-APIC (apicid-pin) 2-0, 2-16, 2-17, 2-18, 2-19, 2-20, 2-21, 2-22, 2-23 
> not connected.
> <6>..TIMER: vector=0x31 pin1=2 pin2=0
> <7>number of MP IRQ sources: 16.
> <7>number of IO-APIC #2 registers: 24.
> <6>testing the IO APIC.......................
> <4>
> <7>IO APIC #2......
> <7>.... register #00: 02000000
> <7>.......    : physical APIC id: 02
> <7>.......    : Delivery Type: 0
> <7>.......    : LTS          : 0
> <7>.... register #01: 00178020
> <7>.......     : max redirection entries: 0017
> <7>.......     : PRQ implemented: 1
> <7>.......     : IO APIC version: 0020
> <7>.... register #02: 00178020
> <7>.......     : arbitration: 00
> <4>An unexpected IO-APIC was found. If this kernel release is less than
> <4>three months old please report this to [email protected]

---
~Randy