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You can. It's just neither recommended nor enabled by default. https://forum.qubes-os.org/t/nested-virtualization/14790 https://forum.qubes-os.org/t/nested-vi
by Syonyk 3y ago
You can. It's just neither recommended nor enabled by default.
https://forum.qubes-os.org/t/nested-virtualization/14790 https://forum.qubes-os.org/t/nested-virtualization/14790
Poke around /etc/libvirt/libxl and your particular VM's config file. You'll find some lines like:
<feature name='vmx' policy='disable'/>
<feature name='svm' policy='disable'/>
Enable it, and you should have working nested virtualization.
- flashback2199 3y agoI did that very thing about a year ago when I still had QubesOS installed, and it did not work. There seems to be a lot of misinformation about this swirling around the web. It simply does not work. There is a post somewhere that confirms it but I don't have the link. Unless the QubesOS devs/maintainers made a 180 degree turn since I tried it and decided to start compiling QubesOS with xen nested virtualization enabled, but I doubt it because their reason was that xen's nested virtualization feature is basically broken anyway.
- flashback2199 3y agoShoot, as soon as I hit reply some neurons lit up and now I remember I was actually able to enable nested virtualization in QubesOS, and the relevant options in the VirtualBox preferences inside a qube became enabled once I did that, but whenever I tried booting any VM the whole system hanged. The same system and BIOS settings worked in Ubuntu to boot a nested VM in VirtualBox, so I think I had the BIOS settings correct. Anyhow, it seemed like a dead-end, so I abandoned it.
- Syonyk 3y agoI'll have to look at it more. I mostly use AMD systems these days, which don't support nested virt in Xen, as I understand it, but it looks like it should work on Intel.
- flashback2199 3y agoI was on Intel when I tried. No worries though, not really planning on trying it again.