Jeff Garzik wrote:
>
> Brian Gerst wrote:
> >
> > NR_IRQS should be 16 when the IO apic is not configured, as the 8259 PIC
> > cannot generate any more interrupts. It also fixes a bug where the IDT
> > gets populated with random addresses, since only 16 entry stubs are
> > created.
>
> > +#ifdef CONFIG_X86_IO_APIC
> > #define NR_IRQS 224
> > +#else
> > +#define NR_IRQS 16
> > +#endif
>
> What about when ioapic is configured but not present?
No problem, just wasted memory. With CONFIG_X86_IO_APIC, all 224 entry
stubs are created. See arch/i386/kernel/i8259.c
--Brian Gerst - 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/
This archive was generated by hypermail 2b29 : Thu Jan 31 2002 - 21:00:46 EST