1 Long way to sriov_init pci设备枚举的时候,初始化所有的capability, 调用pci_iov_init来初始化sriov。 pci_scan_root_bus_bridge/pci_scan_root_bus/pci_scan_bus ->pci_scan_child_bus ->pci_scan_slot ->pci_scan_single_device ->pci_