I recently tried to deploy Cisco VIRL on VMWare Workstation 10 - the install instructions ↗ are for v8 - there are a few differences I noted.
- It doesn’t account for the
host-onlynetwork installed by default so increment all vmnets by1

- The labelling for VT-x/EPT has changed, it now lives under Settings -> Hardware -> Processors -> Virtualisation engine -> Preferred mode:
- You need to explicitly select
Intel VT-x/EPT or AMD-V/RVImode

After this entering the sudo kvm-ok command in the VIRL CLI still output KVM acceleration can NOT be used.
I needed to edit the .vmx file directly and add/change these lines:
monitor.virtual_mmu = "hardware"
monitor.virtual_exec = "hardware"
vhv.enable = "TRUE"
monitor_control.restrict_backdoor = "true"
After that booting into VIRL and running sudo kvm-ok output KVM acceleration can be used.
Once this was overcome configuration went quite smoothly and was fairly simple to setup, be sure to follow the tutorials ↗ once you are ready to go.
Why not follow @mylesagray on Twitter ↗ for more like this!
