Alexander Eichner wrote:
> Hi Amit,
> 
> Am Mittwoch, den 04.02.2009, 19:36 +0530 schrieb Amit k. Saha:
>> On Wed, Feb 4, 2009 at 3:23 PM, Frank Mehnert <frank.mehn...@sun.com> wrote:
>>> Amit,
>>>
>>> On Wednesday 04 February 2009, Amit k. Saha wrote:
>>>> I have got the Linux 'kvm' module loaded. When I start VBox I get this
>>>> message:
>>>>
>>>> "VirtualBox can't operate in VMX root mode. Please disable the KVM
>>>> kernel extension, recompile your kernel and reboot
>>>> (VERR_VMX_IN_VMX_ROOT_MODE).
>>>>
>>>> [...]
>>>>
>>>> Is it because of the fact that when vboxdrv was compiled, the 'kvm'
>>>> was not loaded?
>>> No. The problem is that the kvm modules change the operating mode of
>>> the host CPU (the so-called root mode), even if the modules are only
>>> loaded but not really used. VirtualBox cannot work in that mode. To
>>> use the root mode, this mode has to be initialized by VirtualBox itself,
>>> not by any other instance.
>> Hmm..How to do that?
>>
>> Best regards,
>> -Amit
>>
> 
> This depends on the distribution you have but on most it is enough to do
> "rmmod kvm-intel" as root.
> 

Is it possible to "insmod kvm-intel" after starting VirtualBox, so that 
you have both kvm and VirtualBox (without using cpu virtualisation 
extensions) virtual machines on the same host?

Alternatively, is it possible to run VirtualBox within a kvm virtual 
machine?



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