Bhyve - EPT/Real Address Mode - Unrestricted Guest

[Peter Grehan]

Hi James,

> Can someone please confirm that having EPT support in the CPU is not
> necessarily enough to run Bhyve. I have an Intel Xeon L5520 (Nehalem
> family) that supports EPT but when trying to run an VM, receive
  ...
> My understanding is that the L5520 does not have support for
> "Unrestricted Guest/Real Address Mode"  which was introduce with the
> release of the Westmere architecture.

  Yes, that's correct.

> I assume its a non starter without the unrestricted guest feature.

  Mostly. You'll only be able to run single vCPU FreeBSD guests since 
they boot directly into 64-bit mode: everything else (including multiple 
vCPU guests) requires either 16-bit support or 32-bit non-paged 
protected mode, both of which are only available on Intel with the 
'unrestricted guest' feature.

later,

Peter.