[fedora-virt] Nested virtualization on Intel with F16 already tested?

[Kashyap Chamarthy]

On 11/04/2011 07:36 PM, Gianluca Cecchi wrote:
> Hello,
> I'm going to test nested virtualization on Intel with F16 host.
> I have used it successfully with Amd, where it is enabled by default
> in its kvm-amd module.
> Based on
> https://github.com/torvalds/linux/blob/master/Documentation/virtual/kvm/nested-vmx.txt
> and
> F16 having now
> [root at f16 ~]# uname -r
> 3.1.0-7.fc16.x86_64
> and the same confirmations in its kernel-doc
> /usr/share/doc/kernel-doc-3.1.0/Documentation/virtual/kvm/nested-vmx.txt
> file
> 
> In F15:
> # uname -r
> 2.6.40.6-0.fc15.x86_64
> # modinfo kvm-intel
> ...
> parm:           bypass_guest_pf:bool
> parm:           vpid:bool
> parm:           flexpriority:bool
> parm:           ept:bool
> parm:           unrestricted_guest:bool
> parm:           emulate_invalid_guest_state:bool
> parm:           vmm_exclusive:bool
> parm:           yield_on_hlt:bool
> parm:           ple_gap:int
> parm:           ple_window:int
> 
> In F16 indeed we have now:
> # modinfo kvm-intel
> ...
> parm:           vpid:bool
> parm:           flexpriority:bool
> parm:           ept:bool
> parm:           unrestricted_guest:bool
> parm:           emulate_invalid_guest_state:bool
> parm:           vmm_exclusive:bool
> parm:           yield_on_hlt:bool
> parm:           nested:bool
> parm:           ple_gap:int
> parm:           ple_window:int
> 
> Based on docs, the "nested" option is disabled by default on Intel
> (and probably not changed in Fedora?)
> Did anyone already enable it and test nested virtualization
> functionalities on Intel during F16 Beta/RC cycle and has now results
> to share?

Not that I know of. But it be interesting to test it. Also would be nice if you could
share your results/experience.

Will give this a shot sometime over the next week.

/kashyap


> thanks in advance,
> Gianluca
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