+ ret = -EINVAL;
+ if (pci_seg_supported)
+ ret = HYPERVISOR_physdev_op(PHYSDEVOP_map_pirq,
+ &map_irq);
+ if (ret == -EINVAL && !pci_domain_nr(dev->bus)) {
+ map_irq.type = MAP_PIRQ_TYPE_MSI;
+ map_irq.index = -1;
+ map_irq.pirq = -1;
+ map_irq.bus = dev->bus->number;
+ ret = HYPERVISOR_physdev_op(PHYSDEVOP_map_pirq,
+ &map_irq);
+ if (ret != -EINVAL)
+ pci_seg_supported = false;
+ }