On Tuesday 18 February 2014 19:09:29 Will Deacon wrote: > > > Regarding the 0x6200.. There are two conflicting issues there > > - You really don't want to let the PCI core assign resources to that > > range, it probably won't work. > > Right, with kvmtool we don't support resource assignment (the BARs are fixed) > so everything is PCI_PROBE_ONLY. Ok, I looked at the source now and can confirm: * 0x0-0x1000 are used for lots of legacy ISA devices. * PCI devices get assigned IO addresses in 0x400 steps starting at 0x6200. * There are three PCI drivers doing this: VESA, PCI-SHMEM and virtio-pci. Regarding the PCI_PROBE_ONLY flag, how do you set that? Should we have a standard DT property for that? On PowerPC we already specified "linux,pci-probe-only" and "linux,pci-assign-all-buses", which seems reasonable to use in architecture independent code as well. Arnd -- 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
