On Mon, Oct 15, 2007 at 10:04:01PM -0600, Matthew Wilcox wrote:
> On Mon, Oct 15, 2007 at 07:54:22PM -0700, [email protected] wrote:
> > do PCI devices reorder their bus numbers spontaniously, or only if you
> > change the hardware?
>
> The only system I've had that reordered PCI bus numbers was when I had a
> partitionable system and changed the partitioning. Not quite "change
> the hardware", but neither was it "spontaneous". It was certainly
> unexpected (for me).
>
> Greg probably has quite different examples.
Changing the hardware (adding a new PCI device or removing one) are the
most common times this happens. But I have seen reports of this
happening when you upgrade/downgrade BIOS versions, and, in some
oops-we-messed-up cases, when we changed things in the kernel.
thanks,
greg k-h
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