> > Here's a more interesting example: > > > > -+-[0000:01]-+-00.0 NVIDIA Corporation GT218 [GeForce G210M] > > | \-00.1 NVIDIA Corporation High Definition Audio Controller > > \-[0000:00]-+-00.0 Intel Corporation Mobile 4 Series Chipset Memory > > Controller Hub > > +-01.0 Intel Corporation Mobile 4 Series Chipset PCI Express > > Graphics Port > > > > This system seems to have two host bridges with VGA behind each of them. > > There's no bridge to control VGA routing, so I don't know how the > > selection is done. It's possible the g210m never sees legacy VGA > > accesses in this mode. This bios has another mode which makes the g210m > > the primary graphics and hides the integrated graphics, essentially the > > same as I mention above with hiding integrated endpoint graphics when > > plugin graphics are used. Thanks, > > Wait, those are two different busses ... and there's no bridge ? Is that > the funky x86 multi domain crackpot where you have multiple roots with > non overlapping bus numbers in the same domain ? > > Ben.
Domain numbering on x86 comes from firmware and you know what Linus said about firmware developers ... -- MST
