From CDOT Wiki
→Part 2: Configure VMware Workstation for Nested VMs
:'''Perform the following steps:'''
# In a terminal as the root user, edit the file called: '''/boot/efi/EFI/centos/grub.cfg'''
# Search for the first occurrence of the Linux Kernel boot command.
# Insert the boot option: '''kvm-intel.nested=1''' at the end of the Linux kernel boot options.