Re: PCI domains

[Michael <macallan%NetBSD.org@localhost>]

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Hello,

On Jul 10, 2009, at 5:26 AM, Simon Burge wrote:

> Everything I see so far says that a "PCI domain" is an OS abstraction
> and not part of a PCI specification.  I'm also not sure exactly what
> problem you're trying to solve - why exactly does it matter if two PCI
> busses share a common "domain" or not?

It matters when you want to map IO space which is per host bridge, not  
per bus. But even then all you end up with is additional mappings of  
the same IO space which is kind of a waste but not really a problem.

have fun
Michael

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