PCI Express ports only have one slot, so PCI Express devices can only be plugged into slot 0 on a PCIE port. Enforce it.
CC: jus...@redhat.com CC: imamm...@redhat.com Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2128929 Signed-off-by: Ani Sinha <anisi...@redhat.com> --- hw/pci/pci.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/hw/pci/pci.c b/hw/pci/pci.c index bf38905b7d..5f25ab9f5e 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -64,6 +64,7 @@ bool pci_available = true; static char *pcibus_get_dev_path(DeviceState *dev); static char *pcibus_get_fw_dev_path(DeviceState *dev); static void pcibus_reset(BusState *qbus); +static bool pcie_has_upstream_port(PCIDevice *dev); static Property pci_props[] = { DEFINE_PROP_PCI_DEVFN("addr", PCIDevice, devfn, -1), @@ -1189,6 +1190,11 @@ static PCIDevice *do_pci_register_device(PCIDevice *pci_dev, name); return NULL; + } else if (pcie_has_upstream_port(pci_dev) && PCI_SLOT(devfn)) { + error_setg(errp, "PCI: slot %d is not valid for %s," + " PCI express devices can only be plugged into slot 0.", + PCI_SLOT(devfn), name); + return NULL; } pci_dev->devfn = devfn; -- 2.39.1
