[RFC/PATCH 0/8] Overhaul of virt IRQ configuration. / Kill ppc64_interrupt_controller.

[Paul Mackerras]

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.