Mark Russinovich has posted an updated version of the “Coreinfo” tool in the Sysinternals suite. You can read more about it (and download it from) here:
The latest version adds a very useful option for Hyper-V systems. The “-v” parameter – which displays information about the virtualization-related features which the physical processor supports. This is particularly useful if you are trying to determine if your system supports second level address translation (needed for Remote FX and running 3D intensive applications in the parent partition).