Messages in this thread | | | Date | Thu, 25 Oct 2001 12:20:58 +0200 (MET DST) | From | Mikael Pettersson <> | Subject | Re: APIC and "ISA" interrupts. |
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On Wed, 24 Oct 2001 23:32:45 +0200 (MEST), Rogier Wolff wrote: >After upgrading our fileserver to 2.4, I can't seem to get the ISDN >card to work. I think that's because the kernel is using the APIC to >route interrupts, such that my BIOS configuration "used-by-Legacy-ISA" >is no longer in effect. > >I tried disabling the APIC with the following results: > >Local APIC disabled by BIOS -- reenabling. >Found and enabled local APIC! >Kernel command line: auto BOOT_IMAGE=linux ro root=302 BOOT_FILE=/boot/vmlinuz disableapic > >as far as I can see, the code to print "local apci disabled by bios" >is not called if "disableapic" is on the commandline. > >This is linux-2.4.10 that I got with SuSE 7.3
"disableapic" is not in 2.4.13 vanilla. Some SuSE hack? Anyway, try "noapic" instead. That should disable the kernel's use of the IO-APIC. The local APIC is a completely different beast, and it is unlikely to have anything to do with your interrupt routing problems.
Failing that, recompile with CONFIG_X86_UP_IOAPIC=n and CONFIG_SMP=n.
/Mikael (. local APIC on UP caretaker .) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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