On Monday, November 10, 2008 8:56 pm Benjamin Herrenschmidt wrote: > Hi ! > > I have a problem on platforms with multiple PCI domains and allocating > resources. > > The mechanism of having the arch set PCIBIOS_MIN_IO and PCIBIOS_MIN_MEM > to avoid allocating things over the legacy areas among other things > doesn't work well for us. > > The reason is that on platforms where resource addresses are remapped > because the PCI bus isn't mapped 1:1, the values of the ranges we try > to avoid (typically 0...4K for IO space and legacy VGA memory) is > different from one domain to the next. > > Right now, I'm doing a workaround for .28 that will reserve those > regions on some platforms before the allocation occurs, but it's a bit > fishy, especially it gives strange results when using things like legacy > IDE PCI cards that really want to allocate in those areas. > > Ideally, we would need to pass the pci_bus pointer to those macros. > > Thus, is there any objection to me replacing those accross the board > with something like that ? > > resource_size_t pcibios_min_assign_io(struct pci_bus *bus) > resource_size_t pcibios_min_assign_mem(struct pci_bus *bus) > > Please holler if you have objections before I start fixing everybody :-) Ah yeah, having per-bus ranges makes sense. No objections here. Thanks, Jesse -- 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
