On Wed, Dec 3, 2014 at 2:15 PM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote: > There's a bugzilla for this, so this email is to make the bugzilla > more discoverable and to have a more public discussion about it. > > https://bugzilla.kernel.org/show_bug.cgi?id=85491 > > I think this regression is caused by 5b28541552ef ("PCI: Restrict > 64-bit prefetchable bridge windows to 64-bit resources"). These dmesg > fragments are from v3.16, which doesn't work: > > pci_bus 0000:00: root bus resource [mem 0xc0000000-0xffffffff] > > pci 0000:00:01.0: PCI bridge to [bus 01] > pci 0000:00:01.0: bridge window [io 0x8000-0xafff] > pci 0000:00:01.0: bridge window [mem 0xfdf00000-0xfdffffff] > pci 0000:00:01.0: bridge window [mem 0xbdf00000-0xddefffff 64bit > pref] <-- outside host bridge window > > pci 0000:01:00.0: reg 0x10: [mem 0xc0000000-0xcfffffff pref] > pci 0000:01:00.0: reg 0x14: [io 0xa000-0xa0ff] > pci 0000:01:00.0: reg 0x18: [mem 0xfdff0000-0xfdffffff] > pci 0000:01:00.0: reg 0x30: [mem 0xfdfc0000-0xfdfdffff pref] > > pci 0000:00:01.0: can't claim BAR 15 [mem 0xbdf00000-0xddefffff > 64bit pref]: no compatible bridge window > pci 0000:01:00.0: can't claim BAR 0 [mem 0xc0000000-0xcfffffff > pref]: no compatible bridge window Looks like we wrong type checking from parent resource searching. Yinghai -- 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
