When passing through a Meteor Lake CPU to a VM (e.g., with Proxmox or KVM), the hypervisor sees Family 6 Model 183 . You should set the CPU type to host or Intel-Core-ultra (newer libvirt) rather than kvm64 to enable:
Using an older CPU model like Skylake-Server will hide these new instructions. intel64 family 6 model 183
Supports up to PCI Express 5.0 and 4.0 for next-gen GPUs and NVMe SSDs. When passing through a Meteor Lake CPU to a VM (e
The identifier refers to processors from Intel's 13th Generation (Raptor Lake) and 14th Generation (Raptor Lake Refresh) desktop families. with Proxmox or KVM)
Are you checking this model identifier to verify with a specific motherboard or to troubleshoot a performance issue? Intel Core i9-13900K Analysis - Jeez It's fast!!