Proxmox 8, Bugs kernel 6.8.xxx can not run guest vm, used cpu host only kvm64 (AMD)

The Main Issue : Nested can not loaded in AMD CPU

The Main Issue : Nested can not loaded in AMD CPU, the impact guest vm can not run used CPU host or custom with flag host.

Solution, rollback to kernel 6.5.13–5 :

# apt install proxmox-kernel-6.5.13-5-pve
# pve-efiboot-tool kernel pin 6.5.13-5-pve
# reboot