Nested virtualization with Hyper-V

Discussions about using Windows guests in VirtualBox.

Nested virtualization with Hyper-V

Postby m3a2r1 » 8. Dec 2021, 10:26

Is it possible to run Windows Server machine with Hyper-V hypervisor? I've got error that cpu doesn't support SLAT (it's Intel Xeon).
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Re: Nested virtualization with Hyper-V

Postby fth0 » 8. Dec 2021, 10:31

VirtualBox 6.1.x (and earlier) do not support Hyper-V as a nested hypervisor, because they do not provide SLAT/EPT to the guest OS.
Last edited by fth0 on 8. Dec 2021, 19:57, edited 1 time in total.
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Re: Nested virtualization with Hyper-V

Postby m3a2r1 » 8. Dec 2021, 11:54

Will it be possible in near future?
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Re: Nested virtualization with Hyper-V

Postby mpack » 8. Dec 2021, 12:13

These are user to user discussion forums. We rarely have any idea what features VirtualBox will have in future. Official policy thus far is that the only officially supported nested hypervisor scenario will always be VirtualBox within VirtualBox, since that's the only scenario that's completely with the devs control. As usual, "not supported" does not mean that other scenarios will definitely not work.
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Re: Nested virtualization with Hyper-V

Postby fth0 » 8. Dec 2021, 20:00

I amended my previous post, since I meant "do not support" in the stronger sense of "definitely". ;)
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