Re: [Xen-devel] Getting IOAPIC errors in xl dmesg on old hardware

[Anthony Wright <anthony@xxxxxxxxxxxxxxx>]

On 23/09/2011 11:49, Jan Beulich wrote:
>>>> On 23.09.11 at 12:34, Anthony Wright <anthony@xxxxxxxxxxxxxxx> wrote:
>> I am getting a series of IOAPIC errors in xl dmesg on a Dell OptiPlex
>> GX100 machine (bought in 2000). I also get an error from traps.c which
>> is very similar to the one in the 'Getting mm.c errors from xl dmesg on
>> certain hardware' thread. This happens during system startup with no
>> DomUs running. I have attached the xl dmesg log.
> Seems like the kernel is trying to use IO-APIC despite the LAPIC being
> unavailable. Is this with a pv-ops kernel or a forward port one? Which
> version?
Sorry - this is xen 4.1.1 with vanilla linux 3.0.4
> Also, did you try following what this message
>
> (XEN) Local APIC disabled by BIOS -- you can enable it with "lapic"
I tried putting lapic on the xen command line, and while I got a message
in dmesg saying it had been disabled in the bios, but then re-enabled,
the IOAPIC errors were still present.


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