Re: ACPI and Xen (was: ioapic: adaption required?)

[Joerg Sonnenberger <joerg%britannica.bec.de@localhost>]

On Thu, Oct 11, 2007 at 09:36:49AM +0200, Christoph Egger wrote:
> The interrupt problem is still there.

When you boot a kernel with MPVERBOSE or use boot -d and
"w mp_verbose 1", what does it give you as ISA overrides?
I have a report with issues for the very same chipset, where the ISA
overrides for IRQ 14 and 15 force edge interrupts. That's the note in
parenthesis from ISA interrupt override.

> @joerg: You asked me in private mail, what IRQs 2 and 4 are used for.
> IRQ 4 is for the serial console and IRQ is the timer, Xen uses for scheduling.

I would expect it to use either the LAPIC or IRQ 0 for that, which is
why I asked. We don't currently have a good mechanism to include
properties to tell the IOAPIC which interrupts to configure correctly,
that's why I am inclined to not want to revert this.

Joerg