Domain 0 is reserved?

Jesse Barnes jbarnes at
Fri Jul 7 15:43:40 PDT 2006

On Wednesday, July 5, 2006 10:38 pm, Ian Romanick wrote:
> Can anyone explain to me what the "Domain 0 is reserved" business is
> all about?  The only even semi-useful comment about it in the code is
> on line 99 of sparcPci.c.

IIRC it was reserved for use by platforms that don't support domains?  I 
think it's still the case that most Linux platforms don't support 
domains in /proc/bus/pci, since that would have been an ABI breakage, 
but it's been awhile since I looked.  For the new stuff, reserving 
domain 0 probably isn't necessary...


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