Re: ioapic: adaption required?

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Mon, Oct 08, 2007 at 01:22:32PM +0200, Christoph Egger wrote:
> > xen/include/i82093var.h Or maybe you mean to use APIC operations to
> > query/ack the interrupts instead of these hypercalls ?
> 
> I'm talking about the hypercall used in pirq_establish() in xen/evtchn.c.

Do you know what should be used instead now ?

> 
> > Anyway, it looks like the new ACPI code makes changes to the configuration
> > that Xen considers bogus or invalid; or maybe just changing routing for
> > interrupts that already have an handler installed. I'm not sure getting rid
> > of PHYSDEVOP_IRQ_* would fix it ...
> 
> oh, there is a difference:
> 
> The deprecated PHYSDEVOP_IRQ_* hypercalls only update the evtchn_*
> members in the shared_info page.
> With PHYSDEVOP_apic_read and PHYSDEVOP_apic_write, Xen truely
> talks to the ioapic.

Sure. But we're already using the PHYSDEVOP_apic_read/write hypercalls to
talk to the ioapic. 

-- 
Manuel Bouyer, LIP6, Universite Paris VI.           
Manuel.Bouyer%lip6.fr@localhost
     NetBSD: 26 ans d'experience feront toujours la difference
--