Re: io-apic not working on i850mv(p4)

Steffen Persvold (sp@scali.com)
Sat, 23 Mar 2002 22:34:57 +0100 (CET)


On Sat, 23 Mar 2002, Janos Farkas wrote:

> 2002-03-23, 18:17: Banai Zoltan szerint:
> > I have an Intel i850MV motherboard with:
> ...
> > model name : Intel(R) Pentium(R) 4 CPU 1.70GHz
> > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
> ...
> > using 2.4.19-pre3-ac3 kernel with IO-APIC, but it seems not working to me:
> > 0: 5420792 XT-PIC timer
> ...
> > why gives XT-PIC instead of IO-APIC for all interrupst
>
> Because you don't have an IO APIC?
>
> > Found and enabled local APIC!
> ...
> > Using local APIC timer interrupts.
> > calibrating APIC timer ...
> ...
>
> I/O APIC != local APIC; the latter is on on all CPU's since P5 (at least
> for Intel), I/O APIC's are usable mostly on SMP boards. Is yours SMP
> capable?
>

I don't think so, i850 & P4 is not SMP capable (Only P4 Xeon is). Maybe
the kernel config is missing CONFIG_X86_UP_IOAPIC ?

Regards,

-- 
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