We need to add explanations regarding node reboot are our customers wants to avoid reboots (downtime).

https://docs.openshift.com/container-platform/4.16/networking/hardware_networks/configuring-sriov-device.html#nw-sriov-configuring-device_configuring-sriov-device

"""
When applying the configuration specified in a SriovNetworkNodePolicy object, the SR-IOV Operator might drain the nodes, and in some cases, reboot nodes.

It might take several minutes for a configuration change to apply.
"""

reboot will happens in the following cases only

• with Mellanox NICs (mlx5 driver) every time we increase the number of vfs on a PF
• with Intel NICs: only if the kernel parameters doesn't contains intel_iommu=on and iommu=pt