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Date: Tue, 30 May 2006 07:56:10 +1000
From: Paul Mackerras <paulus@samba.org>
To: Michal Ostrowski <mostrows@watson.ibm.com>
Subject: Re: [RFC/PATCH 0/8] Overhaul of virt IRQ configuration. / Kill
	ppc64_interrupt_controller.
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Michal Ostrowski writes:

> Platforms can choose the default configuration (which is to
> say identity mappings of IRQ vectors 0..511) or specify their own
> configuration:  an offset (for ISA vectors), the range that is to be

Given that the decree has come down from on high that irq 0 is always
to mean "none" or "no IRQ", I have been thinking that we should use
the ISA offset everywhere, even on machines without any ISA hardware.

Paul.