[ubuntu] Enable KVM on Ubuntu 14

Hi,

I have installed Ubuntu 14 on VirtualBox, but cannot enable the KVM. I have followed the instruction on https://www.howtoforge.com/tutorial/...-ubuntu-14.04/. The VirtualBox is running on a Windows 10 machine and Virtualization Technology is already enabled in the BIOS.

$ kvm-ok
INFO: Your CPU does not support KVM extensions
INFO: For more detailed results, you should run this as root
HINT: sudo /usr/sbin/kvm-ok
$ sudo kvm-ok
INFO: Your CPU does not support KVM extensions
KVM acceleration can NOT be used

Any advice on how I can get KVM to work? Thanks.