Nested Virtualization Enabling

[xxvii27]

Hello,

I am trying to enable nested virtualization on one of my existing VM. 

I followed the docs https://cloud.google.com/compute/docs/instances/nested-virtualization/enabling 

and verified the instance information is updated 

"advancedMachineFeatures": { "enableNestedVirtualization": true }, "canIpForward": false,

However grep -cw vmx /proc/cpuinfo still yields 0? 

any insights?