Existing work on software-emulated hypervisor extension?

[dram]

Hi all,

If I understand correctly, the hypervisor extension specification
alludes multiple times throughout the document that it can be completely
emulated in software by trapping all the hypervisor instructions. This
would support nested virtualization and hardware without special
hypervisor support.

Is there any existing or WIP implementation of this software emulation
later? If so I would be happy to be pointed to one.


Regards,

dram