Messages in this thread | | | Date | Tue, 12 Nov 2002 15:53:49 -0800 | From | "Martin J. Bligh" <> | Subject | Re: [0/4] NUMA-Q: remove PCI bus number mangling |
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>>> Also, every PCI bridge in my box has a bus number of 3 so the lookup >>> table will produce wrong answers every time. > > On Tue, Nov 12, 2002 at 02:46:29PM -0800, Martin J. Bligh wrote: >> Isn't that the local bus number though? The topology functions take >> global bus numbers, which should be unique ... >> M. > > That bus number mangling scheme is an instance of an approach vetoed > over a year ago by Dave Miller and others, and does not work for bridges > because arch code does not get the opportunity to mangle the bus number > during bridge discovery.
Right, I'm not against the sysdata thing, seems like a much better way to do it in general (what I did was a quick hack). Was just confused by the global bus number assertion, but if we use the sysdata stuff, it's all a non-issue ;-)
M.
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