Re: [0/4] NUMA-Q: remove PCI bus number mangling

From: William Lee Irwin III (
Date: Tue Nov 12 2002 - 19:12:46 EST

On Tue, Nov 12, 2002 at 03:58:24PM -0800, William Lee Irwin III wrote:
>> Okay, an attempt to remedy this world-breaking braindamage with the
>> fewest lines of code:
>> This alters PCI bus number "clash" detection to compare ->sysdata in
>> addition to the numbers. The bus number is not a unique identifier.

On Tue, Nov 12, 2002 at 04:04:35PM -0800, Greg KH wrote:
> Um, why not?
> And what would /sys/bus/pci/devices look like if you allow the same
> identifiers for different devices? :)
> thanks,
> greg k-h

(1) incorrect semantics:
        multiple domains/segments exist, and the bus number is not
        qualified with such
(2) insufficient cardinality:
        even in the presence of remapping schemes the bus space is limited
        to less than the number of buses requiring unique identifiers

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