Add PCI passthrough device to a VM using pyvmomi

gistfile1.py

def add_pci_to_vm(host_object, vm_object, host_pci_dev):
    """
    host_pci_dev must be one of the devices from the host_object.hardware.pciDevice list
    which is configured as a PCI passthrough device
    """
    pci_passthroughs = vm_object.environmentBrowser.QueryConfigTarget(host=None).pciPassthrough
    systemid_by_pciid = {item.pciDevice.id: item.systemId for item in pci_passthroughs}

    if host_pci_dev.id not in systemid_by_pciid:
        raise Exception("Not a passthrough device")

    # According to the documentation, the deviceId is a signed short but the server expects the PCI device ID
    # to be unsigned. TODO the modulu here is because of this, but I think it's not needed
    deviceId = hex(host_pci_dev.deviceId % 2**16).lstrip('0x')
    backing = vim.VirtualPCIPassthroughDeviceBackingInfo(deviceId=deviceId,
        id=host_pci_dev.id,
        systemId=systemid_by_pciid[host_pci_dev.id],
        vendorId=host_pci_dev.vendorId,
        deviceName=host_pci_dev.deviceName)

    hba_object = vim.VirtualPCIPassthrough(key=-100, backing=backing)

    new_device_config = vim.VirtualDeviceConfigSpec(device=hba_object)
    new_device_config.operation = "add"

    vm_object.ReconfigVM_Task(spec=new_device_config)

To get vm_object you can take a look at the pyvmomi community samples, or infi.pyvmomi_wrapper. Make sure it is not None. host_object can be the VM's runtime host - vm.summary.runtime.host. For host_pci_dev see the docstring.

what's docstring?

Does anyone know how to list VirtualPCIPassthrough's all VMs?

How to plugin dynamic Passthrough device to a VM using pyvmomi sdk? Does anyone know anything about this?