On Tue, Nov 11, 2008 at 08:20:14PM +1100, Benjamin Herrenschmidt wrote: > Until recently, I think only ia64 did :-) I did a powerpc implementation > (while also adding support for mmap of IO space for archs where it makes > sense). I suspect this is why nobody noticed before. All the ia64 systems where this would have been used would have had the VGA device on the root bus, so there was no question of trying to walk back up the device tree. -- Matthew Wilcox Intel Open Source Technology Centre "Bill, look, we understand that you're interested in selling us this operating system, but compare it to ours. We can't possibly take such a retrograde step." -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html