PCIe device passthrough on bare-metal EC2 instances

Hi

I am trying to run some experiments which require passing one or more of the local NVMe SSDs on a bare-metal EC2 instance into a VM. I am running Linux as the host OS and would normally leverage kvm and vfio-pci to get this done. On my EC2 instance however I see no IOMMU groups or vfio kernel module. I have heard that PCIe passthrough is possible on EC2 bare-metal. Can I get some details on how to do that? I would prefer to use Ubuntu 22.04 as my bare-metal OS but if I need to use something else Linux based I can.

Thanks

Stephen