VMs without unrestricted mode support

[Matthew Grooms]

On 4/1/2019 4:34 PM, James Crist wrote:
> Hello, I originally asked this on the FreeNAS forums and was directed here. I'm not sure if this is a FreeNAS issue, a bhyve issue, or a me doing something wrong issue.
>
> My processor (W3550) supports virtualization but does not have unrestricted guest capability. According to the documentation (https://www.freebsd.org/doc/handbook/virtualization-host-bhyve.html) it sounds like I should still be able to run VMs as long as they only have one vCPU but I still get the error. According to this post (https://redmine.ixsystems.com/issues/31338) it sounds like this is only true for FreeBSD VMs but the source provided doesn't talk about number of cores.
>
> Can someone confirm under what conditions a VM can be run without unrestricted guest?

I can't remember exact, but I believe unrestricted guest is also 
required for UEFI/CSM ( BIOS ) support. If that's true, you may still be 
able to use bhyveload or grub2-bhyve to boot single vCPU VMs, but not 
UEFI. Hopefully someone with more knowledge will chime in to correct me 
if I'm misleading you.

-Matthew