PCI devices can't be plugged directly into PCI extra root bridges because their resources can't be computed by firmware before the ACPI tables are loaded.
Signed-off-by: Marcel Apfelbaum <mar...@redhat.com> --- Hi, This patch follows the discussion: https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg01484.html Thanks, Marcel hw/pci/pci.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/hw/pci/pci.c b/hw/pci/pci.c index 168b9cc..584f504 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -850,6 +850,13 @@ static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus, DeviceState *dev = DEVICE(pci_dev); pci_dev->bus = bus; + /* Only pci bridges can be attached to extra PCI root buses */ + if (pci_bus_is_root(bus) && bus->parent_dev && !pc->is_bridge) { + error_setg(errp, + "PCI: Only PCI/PCIe bridges can be plugged into %s", + bus->parent_dev->name); + return NULL; + } if (devfn < 0) { for(devfn = bus->devfn_min ; devfn < ARRAY_SIZE(bus->devices); -- 2.4.3
