Nova support for multiple vGPUs?

Hi, As far as I can tell, libvirt/KVM supports multiple vGPUs per VM (https://docs.nvidia.com/grid/14.0/grid-vgpu-release-notes-generic-linux-kvm/...), but in OpenStack/Nova it is limited to one vGPU per VM (https://docs.openstack.org/nova/latest/admin/virtual-gpu.html#configure-a-fl...) Is there a reason for this limit? What would be needed to enable multiple vGPUs in Nova? BR Sigurd