openkylin
/
qemu
mirror of https://gitee.com/openkylin/qemu.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

hw/pci: ensure that only PCI/PCIe bridges can be attached to pxb/pxb-pcie devices 

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 <marcel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Marcel Apfelbaum 2016-01-18 17:27:26 +02:00 committed by Michael S. Tsirkin
parent b5c6eaf173
commit 0144f6f1ce
1 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
hw/pci/pci.c
View File

@ -851,6 +851,13 @@ static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, PCIBus *bus,
DeviceState *dev = DEVICE(pci_dev); DeviceState *dev = DEVICE(pci_dev);
pci_dev->bus = bus; 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) { if (devfn < 0) {
for(devfn = bus->devfn_min ; devfn < ARRAY_SIZE(bus->devices); for(devfn = bus->devfn_min ; devfn < ARRAY_SIZE(bus->devices);