Jesse Barnes wrote:
On Friday, April 20, 2007 11:28 am Linus Torvalds wrote:
On Fri, 20 Apr 2007, Jesse Barnes wrote:
Sounds good, hopefully reassigning the bridge resources won't cause
too much trouble. Do you have time to hack this up? If not, I
could give it a try, as long as ajax is willing to test...
Actually, I would suggest we not do it automatically (because the
need for it is just so low, and the downsides are potentially huge -
there are just too many resources that are "hidden" from us through
ACPI tricks and having hardware that doesn't actually expose their
PCI resources fully through the normal PCI resource setup).
Yeah, that's probably prudent. OTOH we should probably let the user
know in no uncertain terms that some of the stuff behind one of their
bridges will be inaccessible.
Something like that would have made it a lot more obvious
why my Matrox PCIe x1 video card will not work in my Dell
9150, while a PCI video card does work.
The PCI video card directly sits on the bus, and gets its
resources assigned by the BIOS.
The PCIe video card turned out to be a PCIe to AGP bridge,
and the BIOS did not assign the needed PCI resources, making
the system crash when I started X.
X seemed to have some trouble reading the ROM, too...
--
Politics is the struggle between those who want to make their country
the best in the world, and those who believe it already is. Each group
calls the other unpatriotic.
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