Hi, > I see a similar ~8k PCI hole reads with a -kernel boot w/ OVMF. All but 60 > of those are from pcibios_fixup_peer_bridges(), and all are from the kernel. pcibios_fixup_peer_bridges() looks at pcibios_last_bus, and that in turn seems to be set according to the mmconfig size (in arch/x86/pci/mmconfig-shared.c). So, maybe we just need to declare a smaller mmconfig window in the acpi tables, depending on the number of pci busses actually used ... > If all of the above is true, this can be handled by adding "pci=lastbus=0" ... so we don't need manual quirks like this? take care, Gerd
