run nested KVM hypervisor VMs

i success  on esxi5.1.0.

according to http://communities.vmware.com/docs/DOC-8970 ,but i have to appent   "featMask.vm.hv.capable = "Min:1"  and
vhv.enable = "true"" to KVM hypervisor's vmx file.

both of them is created throught  web client,"Expose hardware-assisted virtualization to the guest operating system.".

so i you  create guest KVM hypervisor, should append this 2 lines to  VM'vmx conf file.

1).

i have confusion  to figure out.

looking  the following two steps , both need to be done,or just  one is ok.

1.add the following lines to the outer guest's configuration file

cpuid.1.ecx="----:----:----:----:----:----:--h-:----"
cpuid.80000001.ecx.amd="----:----:----:----:----:----:----:-h--"
cpuid.8000000a.eax.amd="hhhh:hhhh:hhhh:hhhh:hhhh:hhhh:hhhh:hhhh"
cpuid.8000000a.ebx.amd="hhhh:hhhh:hhhh:hhhh:hhhh:hhhh:hhhh:hhhh"
cpuid.8000000a.edx.amd="hhhh:hhhh:hhhh:hhhh:hhhh:hhhh:hhhh:hhhh"

2. IN vsphere or vcenter, edit guest KVM VM,change the Guest Operating System to Other - VMWare ESXi 5.x.

are they the same thing?

2)

here are my knowledge.

1.vhv.allow = TRUE   == enable virtualized HV  on ESXi 5.X

2.cpuid.80000......  == export virtualized HV to guest hypervisors

3.vhv.enable = TRUE  ==  same with (1).

am i right?