[root@kvm-hypervisor ~]# cat /etc/modprobe.d/kvm-nested.conf options kvm-intel nested=1 options kvm-intel enable_shadow_vmcs=1 options kvm-intel enable_apicv=1 options kvm-intel ept=1 [root@kvm-hypervisor ~]# modprobe -r kvm_intel [root@kvm-hypervisor ~]# modprobe -a kvm_intel