How to enable nested KVM in ubuntu 16.04

  1. Check whether the nested KVM is enabled?
    cat /sys/module/kvm_intel/parameters/nested
    N
  2. Upgrade the kernel to at least 3.18
    You can check you kernel version by #uname -a
  3. Edit /etc/default/grub
    sudo vim /etc/default/grub
    append kvm-intel.nested=1 to the value of GRUB_CMDLINE_LINUX
  4. #update-grub
  5. Reboot your system.
    Reference
    http://www.linuxidc.com/Linux/2015-05/117026.htm
    http://www.rdoxenham.com/?p=275
    http://www.cnblogs.com/saptechnique/archive/2012/04/05/2433643.html
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