unexpected IO-APIC

Jörg Lübbert
2004-06-23T11:42:27Z

Hello,

The reason of my writing is that an error message of our webserver asked
me to do so.

We're running a dual Opteron system and when booting up, the following
error is shown. It's in no way critical to the operation of the system.
Everything works normal.

Output of dmesg:
IO APIC #3......
.... register #00: 03000000
....... : physical APIC id: 03
....... : Delivery Type: 0
....... : LTS : 0
.... register #01: 00030011
....... : max redirection entries: 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
....... : PRQ implemented: 0
....... : IO APIC version: 0011
.... register #02: 00000000
....... : arbitration: 00
.... IRQ redirection table:
NR Log Phy Mask Trig IRR Pol Stat Dest Deli Vect:
00 003 03 1 1 0 1 0 1 1 99
01 003 03 1 1 0 1 0 1 1 A1
02 000 00 1 0 0 0 0 0 0 00
03 000 00 1 0 0 0 0 0 0 00

IO APIC #4......
.... register #00: 04000000
....... : physical APIC id: 04
....... : Delivery Type: 0
....... : LTS : 0
.... register #01: 00030011
....... : max redirection entries: 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
....... : PRQ implemented: 0
....... : IO APIC version: 0011
.... register #02: 00000000
....... : arbitration: 00
.... IRQ redirection table:
NR Log Phy Mask Trig IRR Pol Stat Dest Deli Vect:
00 003 03 1 1 0 1 0 1 1 A9
01 000 00 1 0 0 0 0 0 0 00
02 000 00 1 0 0 0 0 0 0 00
03 000 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
IRQ6 -> 0:6
IRQ7 -> 0:7
IRQ8 -> 0:8
IRQ12 -> 0:12
IRQ13 -> 0:13
IRQ14 -> 0:14
IRQ15 -> 0:15
IRQ18 -> 0:18
IRQ19 -> 0:19
IRQ24 -> 1:0
IRQ25 -> 1:1
IRQ28 -> 2:0
.................................... done.
Using local APIC timer interrupts.
calibrating APIC timer ...
..... CPU clock speed is 1395.6556 MHz.
..... host bus clock speed is 199.3792 MHz.
cpu: 0, clocks: 1993792, slice: 664597
CPU0<T0:1993792,T1:1329184,D:11,S:664597,C:1993792>
cpu: 1, clocks: 1993792, slice: 664597
CPU1<T0:1993792,T1:664592,D:6,S:664597,C:1993792>

Output of /proc/pci:
PCI devices found:
Bus 0, device 6, function 0:
PCI bridge: Advanced Micro Devices [AMD] AMD-8111 PCI (rev 7).
Master Capable. Latency=64. Min Gnt=11.
Bus 0, device 7, function 0:
ISA bridge: Advanced Micro Devices [AMD] AMD-8111 LPC (rev 5).
Bus 0, device 7, function 1:
IDE interface: Advanced Micro Devices [AMD] AMD-8111 IDE (rev 3).
Master Capable. Latency=32.
I/O at 0xffa0 [0xffaf].
Bus 0, device 7, function 2:
SMBus: Advanced Micro Devices [AMD] AMD-8111 SMBus 2.0 (rev 2).
IRQ 19.
Master Capable. Latency=64.
I/O at 0xcc00 [0xcc1f].
Bus 0, device 7, function 3:
Bridge: Advanced Micro Devices [AMD] AMD-8111 ACPI (rev 5).
Master Capable. Latency=64.
Bus 0, device 11, function 0:
PCI bridge: Advanced Micro Devices [AMD] AMD-8131 PCI-X Bridge (#2)
(rev 18).
Master Capable. Latency=64. Min Gnt=5.
Bus 0, device 10, function 0:
PCI bridge: Advanced Micro Devices [AMD] AMD-8131 PCI-X Bridge (rev
18).
Master Capable. Latency=64. Min Gnt=5.
Bus 0, device 11, function 1:
PIC: Advanced Micro Devices [AMD] AMD-8131 PCI-X APIC (#2) (rev 1).
Non-prefetchable 64 bit memory at 0xfebff000 [0xfebfffff].
Bus 0, device 10, function 1:
PIC: Advanced Micro Devices [AMD] AMD-8131 PCI-X APIC (rev 1).
Non-prefetchable 64 bit memory at 0xfebfe000 [0xfebfefff].
Bus 0, device 25, function 0:
Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge (#2) (rev 0).
Bus 0, device 24, function 0:
Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge (rev 0).
Bus 0, device 25, function 1:
Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge (#2) (rev 0).
Bus 0, device 24, function 1:
Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge (rev 0).
Bus 0, device 25, function 2:
Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge (#2) (rev 0).
Bus 0, device 24, function 2:
Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge (rev 0).
Bus 0, device 25, function 3:
Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge (#2) (rev 0).
Bus 0, device 24, function 3:
Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge (rev 0).
Bus 3, device 0, function 1:
USB Controller: Advanced Micro Devices [AMD] AMD-8111 USB (#2) (rev
11).
IRQ 19.
Master Capable. Latency=64. Max Lat=80.
Non-prefetchable 32 bit memory at 0xfeafe000 [0xfeafefff].
Bus 3, device 0, function 0:
USB Controller: Advanced Micro Devices [AMD] AMD-8111 USB (rev 11).
IRQ 19.
Master Capable. Latency=64. Max Lat=80.
Non-prefetchable 32 bit memory at 0xfeafd000 [0xfeafdfff].
Bus 3, device 6, function 0:
VGA compatible controller: ATI Technologies Inc Rage XL (rev 39).
IRQ 18.
Master Capable. Latency=64. Min Gnt=8.
Non-prefetchable 32 bit memory at 0xfd000000 [0xfdffffff].
I/O at 0xb800 [0xb8ff].
Non-prefetchable 32 bit memory at 0xfeaff000 [0xfeafffff].
Bus 2, device 9, function 1:
Ethernet controller: Broadcom Corporation NetXtreme BCM5704 Gigabit
Ethernet (#2) (rev 3).
IRQ 25.
Master Capable. Latency=64. Min Gnt=64.
Non-prefetchable 64 bit memory at 0xfc9f0000 [0xfc9fffff].
Non-prefetchable 64 bit memory at 0xfc9e0000 [0xfc9effff].
Bus 2, device 9, function 0:
Ethernet controller: Broadcom Corporation NetXtreme BCM5704 Gigabit
Ethernet (rev 3).
IRQ 24.
Master Capable. Latency=64. Min Gnt=64.
Non-prefetchable 64 bit memory at 0xfc9c0000 [0xfc9cffff].
Non-prefetchable 64 bit memory at 0xfc9b0000 [0xfc9bffff].
Bus 1, device 3, function 0:
RAID bus controller: Mylex Corporation AcceleRAID 352/170/160
support Device (rev 2).
IRQ 28.
Master Capable. Latency=64.
Prefetchable 32 bit memory at 0xf8000000 [0xfbffffff].

And /proc/cpuinfo:
processor : 0
vendor_id : AuthenticAMD
cpu family : 15
model : 5
model name : AMD Opteron(tm) Processor 240
stepping : 1
cpu MHz : 1395.566
cache size : 1024 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall mmxext lm 3dnowext
3dnow
bogomips : 2785.28

processor : 1
vendor_id : AuthenticAMD
cpu family : 15
model : 5
model name : AMD Opteron(tm) Processor 240
stepping : 1
cpu MHz : 1395.566
cache size : 1024 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall mmxext lm 3dnowext
3dnow
bogomips : 2785.28

/proc/interrupts:
CPU0 CPU1
0: 6367 57762577 IO-APIC-edge timer
1: 0 2 IO-APIC-edge keyboard
2: 0 0 XT-PIC cascade
8: 0 2 IO-APIC-edge rtc
14: 0 5 IO-APIC-edge ide0
24: 11190 12976248 IO-APIC-level eth1
25: 2888250 10136461 IO-APIC-level eth0
28: 285 1874139 IO-APIC-level Mylex AcceleRAID 352
NMI: 0 0
LOC: 57771145 57771143
ERR: 0
MIS: 0

Do you want to look further into this issue? Can I help you with this?

Cheers

- Jörg Lübbert

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Login Lanstation GmbH
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