Messages in this thread |  | | Date | Thu, 8 Feb 2001 03:40:24 -0800 (PST) | From | "David D.W. Downey" <> | Subject | APIC Errors with 2.4.2-pre1 |
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First off, here's something from my dmesg.
mapped APIC to ffffe000 (fee00000) mapped IOAPIC to ffffd000 (fec00000) CALLIN, before setup_local_APIC(). ENABLING IO-APIC IRQs ...changing IO-APIC physical APIC ID to 2 ... ok. init IO_APIC IRQs IO-APIC (apicid-pin) 2-0, 2-9, 2-10, 2-11, 2-20, 2-21, 2-22, 2-23 not connected. number of IO-APIC #2 registers: 24. testing the IO APIC....................... IO APIC #2...... ....... : physical APIC id: 02 ....... : IO APIC version: 0011 WARNING: unexpected IO-APIC, please mail calibrating APIC timer ... PCI->APIC IRQ transform: (B0,I7,P3) -> 19 PCI->APIC IRQ transform: (B0,I7,P3) -> 19 PCI->APIC IRQ transform: (B0,I10,P0) -> 17 PCI->APIC IRQ transform: (B0,I12,P0) -> 19 PCI->APIC IRQ transform: (B0,I13,P0) -> 18 PCI->APIC IRQ transform: (B0,I14,P0) -> 18 PCI->APIC IRQ transform: (B1,I0,P0) -> 16
Then whenever I do heavy CPU or RAM testing using something like cputest and ubench, I get the following errors in my log..
APIC error on CPU0: 00(08) APIC error on CPU1: 00(08) APIC error on CPU1: 08(08) APIC error on CPU1: 08(08) APIC error on CPU1: 08(08) APIC error on CPU0: 08(08) APIC error on CPU0: 08(08) APIC error on CPU0: 08(08) APIC error on CPU0: 08(08) APIC error on CPU1: 08(08) APIC error on CPU1: 08(08) APIC error on CPU0: 08(08) APIC error on CPU1: 08(02) APIC error on CPU1: 02(02) APIC error on CPU1: 02(08) APIC error on CPU0: 08(02) APIC error on CPU1: 08(01) APIC error on CPU0: 02(02) APIC error on CPU1: 01(02) APIC error on CPU0: 02(02) APIC error on CPU1: 02(04) APIC error on CPU1: 04(04) APIC error on CPU1: 04(02) APIC error on CPU1: 02(08) APIC error on CPU1: 08(02) APIC error on CPU1: 02(02)
and on and on and on and on...
I found the error codes in /usr/src/linux/arch/i386/kernel/apic.c. I could use a little help though on interpreting the error code(s) returned.
Also, from the source code I see that apic_read(APIC_ESR) is called. In /usr/src/linux/include/asm/apicdef.h, I see that APIC_ESR is 0x280 which I take is the offset into the APIC_DEFAULT_PHYS_BASE.
Since this is a controller, I'd like to know what the ##(##) represent. I take it that these numbers are the error code the controller reported just before and just after the apic_write(). To me it looks like this was done this way just to save state because the next thing called was the ack_APIC_irq().
Can someone also please explain what the ESR is?
(Please forgive my ignorance of this stuff.)
-- David D.W. Downey - RHCE Consulting Engineer Ensim Corporation - Sunnyvale, CA
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