Re: Bhyve - EPT/Real Address Mode - Unrestricted Guest

2016-01-19 Thread James Lodge
>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.


Hi Peter, 

Thank you for the clarification. It looks like I'll need to purchase a couple 
to Westmere X5650 CPU's that do have the 'unregistered guest' feature as I need 
to be able to running multi vcpu FreeBSD vms and Windows. 

Thank you again for your help. 

Regards
James Lodge
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Re: Bhyve - EPT/Real Address Mode - Unrestricted Guest

2016-01-18 Thread 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.
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