Re: APICs

Ove Ewerlid (Ove.Ewerlid@syscon.uu.se)
Fri, 30 Jul 1999 12:42:33 +0200

Elena Nistal wrote:
>
> Hi all,
> I am trying to get one of the two CPUs of my linux box isolated from
> interrupts. Sp I have made some changes in the io_apic.c and smp.c
> files of my linux-2.1.131 kernel. But when I make a 'cat
> /proc/interrupts' this is what it lists:

If you want complete and final isolation for the non boot CPU´s,
how about modifying:

#define PIC_IRQS
((1<<2)|(1<<13))

in arch/i386/kernel/io_apic.c.
Each set bit disables IOAPIC processing for that particular interrupt!

Ove

-- 
Ove Ewerlid
Ove.Ewerlid@syscon.uu.se or Ove.Ewerlid@signal.uu.se
Phone: +46 70 666 23 63, Fax: +46 18 503 611, +46 18 555 096


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