> I can patch up the pci_mmcfg_insert_resource to verify if > the region that is exported by ACPI is reserved in e820 and printk an > error message if it is not and skip the resource insertion. It probably should get its information from pci_mcfg_init() and only reserve what is used there instead of adding duplicate e820 checking code somewhere else. Or perhaps only reserve when the bus is discovered? -Andi