VM unrestricted guest capability required

Dave Cottlehuber dch at skunkwerks.at
Fri Oct 3 08:50:06 UTC 2014


> >> I'm trying to install Ubuntu Linux 14.10 as a guest in FreeBSD
> >> 11-CURRENT r272460 host. When I try to run grub-bhyve (version 0.23)
> >> I see in console message: VM unrestricted guest capability required
> >> Error in initializing VM
> >>
> >> I've read a thread with the similar problem. As far as I understood,
> >> this message happen when CPU doesn't have unrestricted guest
> >> capability support (EPT).
> >
> > 'Unrestricted guest' is a different feature than EPT (Extended Page
> >Tables). It allows the CPU to run in real mode and unpaged protected
> >mode. This feature was introduced with the Westmere microarchitecture,
> >and isn't available in your core i7 780 (aka Lynnfield, a Nehalem-based
> >model)

Thanks Peter for the clarification. Is there a way to tell this from dmesg?

A+
Dave


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