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List:       linux-smp
Subject:    Re: WARNING: unexpected IO-APIC
From:       Earle Nietzel <nietzel () yahoo ! com>
Date:       2002-03-19 22:24:55
[Download RAW message or body]

I also found this at intel too!

ACPI will supercede MPS.

Advanced Programmable Interrupt Controller (APIC) support must comply with 
ACPI 1.0 by including the Multiple APIC Description Table.

Earle

At 09:05 PM 3/19/02, you wrote:
>Dear Sirs,
>
>We have installed Red Hat 7.2 (kernel 2.4.7-10smp)  in a SMP 2-Pentium IV 1GHz
>(motherboard ASUS CUV4X-D) and during boot we received this message to
>contact you:
>
>Mar 19 10:41:53 fenix2 kernel: ENABLING IO-APIC IRQs
>Mar 19 10:41:53 fenix2 kernel: ...changing IO-APIC physical APIC ID to 2 
>... ok.
>Mar 19 10:41:53 fenix2 kernel: ..TIMER: vector=0x31 pin1=2 pin2=0
>Mar 19 10:41:53 fenix2 kernel: testing the IO APIC.......................
>Mar 19 10:41:53 fenix2 kernel:
>Mar 19 10:41:53 fenix2 kernel:  WARNING: unexpected IO-APIC, please mail
>Mar 19 10:41:53 fenix2 kernel:           to linux-smp@vger.kernel.org
>Mar 19 10:41:53 fenix2 random: Initializing random number 
>generator:  succeeded
>Mar 19 10:41:54 fenix2 kernel: .................................... done.
>
>Since this is new for me (a SMP machine), I do not really know what to do. 
>This
>is an error? Well, here is the /proc/interrupts file of my machine:
>
>            CPU0       CPU1
>   0:     790112     437697    IO-APIC-edge  timer
>   1:       3216       3569       IO-APIC-edge  keyboard
>   2:          0          0           XT-PIC  cascade
>   5:         92         92          IO-APIC-level  aic7xxx
>   8:          1          0           IO-APIC-edge  rtc
>  10:          0          0          IO-APIC-level  usb-uhci, usb-uhci
>  11:      28711      21299    IO-APIC-level  eth0
>  12:      73790      77836    IO-APIC-edge  PS/2 Mouse
>  14:      16883      17828    IO-APIC-edge  ide0
>  15:       1865       3060     IO-APIC-edge  ide1
>NMI:          0          0
>LOC:    1227701    1227700
>ERR:          0
>MIS:          0
>
>Beside this,  I have a question too. In my computer's BIOS, there is
>a entry called MPS 1.4 Support. When is enabled,  my computer
>doesn't boot and freezes when testing IO APIC. Is this related
>to the problem above? I know that MPS 1.4 and APIC are related.
>
>I look forward an answer.
>
>Thank you.
>
>Rogerio T. Kondo
>Systems Analyst
>
>PS. I am also sending the messages of my computer's boot.
>


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