unexpected IO-APIC

Paul Hemstock
2002-04-08T09:31:10Z

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Hi. this is the dmesg from a smp server we have recently commissioned.

an excerpt:
==============================================

number of IO-APIC #2 registers: 24.
testing the IO APIC.......................

IO APIC #2......
.... register #00: 02000000
....... : physical APIC id: 02
.... register #01: 00178011
....... : max redirection entries: 0017
....... : IO APIC version: 0011
WARNING: unexpected IO-APIC, please mail
to linux-smp@vger.kernel.org
.... register #02: 00000000
....... : arbitration: 00

==============================================

is there anything that can be quickly be done about this ?

Best Wishes,

Paul Hemstock.
Host Europe System Administration.
Host Europe PLC
paul.hemstock@hosteurope.com
http://www.hosteurope.com
Tel: 020 8896 7535
Fax: 0208 752 1863

Part of the Host Europe PLC group of companies:-

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[-- Attachment #2: dmesg --]
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Linux version 2.4.9-6smp (bhcompile@stripples.devel.redhat.com) (gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-85)) #1 SMP Thu Oct 18 09:22:57 EDT 2001
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 00000000000a0000 (usable)
BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000003fff0000 (usable)
BIOS-e820: 000000003fff0000 - 000000003fff3000 (ACPI NVS)
BIOS-e820: 000000003fff3000 - 0000000040000000 (ACPI data)
BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
Scanning bios EBDA for MXT signature
127MB HIGHMEM available.
found SMP MP-table at 000f5660
hm, page 000f5000 reserved twice.
hm, page 000f6000 reserved twice.
hm, page 000f1000 reserved twice.
hm, page 000f2000 reserved twice.
On node 0 totalpages: 262128
zone(0): 4096 pages.
zone(1): 225280 pages.
zone(2): 32752 pages.
Intel MultiProcessor Specification v1.4
Virtual Wire compatibility mode.
OEM ID: OEM00000 Product ID: PROD00000000 APIC at: 0xFEE00000
Processor #0 Pentium(tm) Pro APIC version 17
Processor #1 Pentium(tm) Pro APIC version 17
I/O APIC #2 Version 17 at 0xFEC00000.
Processors: 2
Kernel command line: auto BOOT_IMAGE=linux ro root=801 BOOT_FILE=/boot/vmlinuz-2.4.9-6smp
Initializing CPU#0
Detected 997.172 MHz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 1985.74 BogoMIPS
Memory: 1026212k/1048512k available (2022k kernel code, 20896k reserved, 102k data, 240k init, 131008k highmem)
Dentry-cache hash table entries: 131072 (order: 8, 1048576 bytes)
Inode-cache hash table entries: 65536 (order: 7, 524288 bytes)
Mount-cache hash table entries: 16384 (order: 5, 131072 bytes)
Buffer-cache hash table entries: 65536 (order: 6, 262144 bytes)
Page-cache hash table entries: 262144 (order: 9, 2097152 bytes)
CPU: Before vendor init, caps: 0387fbff 00000000 00000000, vendor = 0
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 256K
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU: After vendor init, caps: 0387fbff 00000000 00000000 00000000
CPU serial number disabled.
CPU: After generic, caps: 0383fbff 00000000 00000000 00000000
CPU: Common caps: 0383fbff 00000000 00000000 00000000
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
mtrr: v1.40 (20010327) Richard Gooch (rgooch@atnf.csiro.au)
mtrr: detected mtrr type: Intel
CPU: Before vendor init, caps: 0383fbff 00000000 00000000, vendor = 0
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 256K
Intel machine check reporting enabled on CPU#0.
CPU: After vendor init, caps: 0383fbff 00000000 00000000 00000000
CPU: After generic, caps: 0383fbff 00000000 00000000 00000000
CPU: Common caps: 0383fbff 00000000 00000000 00000000
CPU0: Intel Pentium III (Coppermine) stepping 06
per-CPU timeslice cutoff: 730.95 usecs.
enabled ExtINT on CPU#0
ESR value before enabling vector: 00000000
ESR value after enabling vector: 00000000
Booting processor 1/1 eip 2000
Initializing CPU#1
masked ExtINT on CPU#1
ESR value before enabling vector: 00000000
ESR value after enabling vector: 00000000
Calibrating delay loop... 1992.29 BogoMIPS
CPU: Before vendor init, caps: 0387fbff 00000000 00000000, vendor = 0
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 256K
Intel machine check reporting enabled on CPU#1.
CPU: After vendor init, caps: 0387fbff 00000000 00000000 00000000
CPU serial number disabled.
CPU: After generic, caps: 0383fbff 00000000 00000000 00000000
CPU: Common caps: 0383fbff 00000000 00000000 00000000
CPU1: Intel Pentium III (Coppermine) stepping 06
Total of 2 processors activated (3978.03 BogoMIPS).
ENABLING IO-APIC IRQs
...changing IO-APIC physical APIC ID to 2 ... ok.
init IO_APIC IRQs
IO-APIC (apicid-pin) 2-0, 2-16, 2-17, 2-18, 2-19, 2-20, 2-21, 2-22, 2-23 not connected.
..TIMER: vector=0x31 pin1=2 pin2=0
number of MP IRQ sources: 20.
number of IO-APIC #2 registers: 24.
testing the IO APIC.......................

IO APIC #2......
.... register #00: 02000000
....... : physical APIC id: 02
.... register #01: 00178011
....... : max redirection entries: 0017
....... : IO APIC version: 0011
WARNING: unexpected IO-APIC, please mail
to linux-smp@vger.kernel.org
.... register #02: 00000000
....... : arbitration: 00
.... 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
01 003 03 0 0 0 0 0 1 1 39
02 003 03 0 0 0 0 0 1 1 31
03 003 03 0 0 0 0 0 1 1 41
04 003 03 0 0 0 0 0 1 1 49
05 003 03 0 0 0 0 0 1 1 51
06 003 03 0 0 0 0 0 1 1 59
07 003 03 0 0 0 0 0 1 1 61
08 003 03 0 0 0 0 0 1 1 69
09 003 03 0 0 0 0 0 1 1 71
0a 003 03 1 1 0 1 0 1 1 79
0b 003 03 1 1 0 1 0 1 1 81
0c 003 03 1 1 0 1 0 1 1 89
0d 003 03 0 0 0 0 0 1 1 91
0e 003 03 0 0 0 0 0 1 1 99
0f 003 03 0 0 0 0 0 1 1 A1
10 000 00 1 0 0 0 0 0 0 00
11 000 00 1 0 0 0 0 0 0 00
12 000 00 1 0 0 0 0 0 0 00
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
IRQ10 -> 0:10
IRQ11 -> 0:11
IRQ12 -> 0:12
IRQ13 -> 0:13
IRQ14 -> 0:14
IRQ15 -> 0:15
.................................... done.
Using local APIC timer interrupts.
calibrating APIC timer ...
..... CPU clock speed is 997.1864 MHz.
..... host bus clock speed is 132.9580 MHz.
cpu: 0, clocks: 1329580, slice: 443193
CPU0<T0:1329568,T1:886368,D:7,S:443193,C:1329580>
cpu: 1, clocks: 1329580, slice: 443193
CPU1<T0:1329568,T1:443168,D:14,S:443193,C:1329580>
checking TSC synchronization across CPUs: passed.
mtrr: your CPUs had inconsistent variable MTRR settings
mtrr: probably your BIOS does not setup all CPUs
PCI: PCI BIOS revision 2.10 entry at 0xfb3e0, last bus=1
PCI: Using configuration type 1
PCI: Probing PCI hardware
Unknown bridge resource 0: assuming transparent
Unknown bridge resource 1: assuming transparent
Unknown bridge resource 2: assuming transparent
PCI: Using IRQ router VIA [1106/0686] at 00:07.0
PCI->APIC IRQ transform: (B0,I6,P0) -> 12
PCI->APIC IRQ transform: (B0,I7,P3) -> 12
PCI->APIC IRQ transform: (B0,I7,P3) -> 12
PCI->APIC IRQ transform: (B0,I13,P0) -> 11
PCI->APIC IRQ transform: (B0,I14,P0) -> 10
PCI->APIC IRQ transform: (B0,I15,P0) -> 11
PCI: Enabling Via external APIC routing
isapnp: Scanning for PnP cards...
isapnp: No Plug & Play device found
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
apm: BIOS version 1.2 Flags 0x07 (Driver version 1.14)
apm: disabled - APM is not SMP safe.
mxt_scan_bios: enter
Starting kswapd v1.8
allocated 64 pages and 64 bhs reserved for the highmem bounces
VFS: Diskquotas version dquot_6.5.0 initialized
Detected PS/2 Mouse Port.
pty: 2048 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with MANY_PORTS MULTIPORT SHARE_IRQ SERIAL_PCI ISAPNP enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
Real Time Clock Driver v1.10e
block: queued sectors max/low 681130kB/550058kB, 2048 slots per queue
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz PCI bus speed for PIO modes; override with idebus=xx
VP_IDE: IDE controller on PCI bus 00 dev 39
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
ide: Assuming 33MHz PCI bus speed for PIO modes; override with idebus=xx
VP_IDE: VIA vt82c686b (rev 40) IDE UDMA100 controller on pci00:07.1
ide0: BM-DMA at 0xd400-0xd407, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xd408-0xd40f, BIOS settings: hdc:pio, hdd:pio
hda: SAMSUNG CD-ROM SC-152L, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide-floppy driver 0.97.sv
Floppy drive(s): fd0 is 1.44M
FDC 0 is a post-1991 82077
ide-floppy driver 0.97.sv
md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
hotplug_pci.o: Hot Plug PCI Core Driver version: 0.1
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 8192 buckets, 64Kbytes
TCP: Hash tables configured (established 262144 bind 65536)
Linux IP multicast router 0.06 plus PIM-SM
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
RAMDISK: Compressed image found at block 0
Freeing initrd memory: 332k freed
VFS: Mounted root (ext2 filesystem).
SCSI subsystem driver Revision: 1.00
megaraid: v1.17a (Release Date: Fri Jul 13 18:44:01 EDT 2001)
megaraid: found 0x101e:0x1960:idx 0:bus 0:slot 15:func 0
scsi0 : Found a MegaRAID controller at 0xf8825000, IRQ: 11
scsi0 : Enabling 64 bit support
megaraid: [A159:3.11] detected 1 logical drives
megaraid: channel[1] is raid.
scsi0 : AMI MegaRAID A159 254 commands 16 targs 1 chans 40 luns
blk: queue c2213818, I/O limit 4095Mb (mask 0xffffffff)
scsi0: scanning channel 1 for devices.
scsi0: scanning virtual channel for logical drives.
Vendor: MegaRAID Model: LD0 RAID5 05723R Rev: A159
Type: Direct-Access ANSI SCSI revision: 02
blk: queue f759c818, I/O limit 4095Mb (mask 0xffffffff)
Attached scsi disk sda at scsi0, channel 1, id 0, lun 0
SCSI device sda: 216520704 512-byte hdwr sectors (110859 MB)
Partition check:
sda: sda1 sda2 < sda5 sda6 sda7 sda8 >
Freeing unused kernel memory: 240k freed
Adding Swap: 530104k swap-space (priority -1)
usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
usb-uhci.c: $Revision: 1.259 $ time 09:34:56 Oct 18 2001
usb-uhci.c: High bandwidth mode enabled
usb-uhci.c: USB UHCI at I/O 0xd800, IRQ 12
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 1
hub.c: USB hub found
hub.c: 2 ports detected
usb-uhci.c: USB UHCI at I/O 0xdc00, IRQ 12
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 2
hub.c: USB hub found
hub.c: 2 ports detected
usb-uhci.c: v1.251:USB Universal Host Controller Interface driver