How to use qubes with kvm?

Jaydon · April 4, 2024, 4:05am

I installed qubes on my laptop and i want to use kvm inside pvh virtual machine, is it possible?

apparatus · April 4, 2024, 5:37am

github.com/QubesOS/qubes-issues

No virtualization is available in a HVM qube

opened 09:05PM - 18 Jul 18 UTC

closed 12:51AM - 19 Jul 18 UTC

SurinameClubcard

R: upstream issue

### Qubes OS version:  R4.0 ### Affected component(s): Depending on the outcome of a risk and threat assessment, it might be allowable to enable nested virtualization in HVM mode. E.g., I'd like to run GNS3 in a HVM based Linux distribution. Without proper support for nested virtualization, that won't work / perform. --- ### Steps to reproduce the behavior:  - Install your favorite Linux distribution in a HVM-based qube. - Install VirtualBox in that HVM. - VirtualBox will complain that VT-x/AMD-V hardware acceleration is missing. ### Expected behavior: Hardware acceleration should be availabe in HVM. ### Actual behavior: Currently I'm unable to run GNS3 in a Linux based HVM with acceptable performance. ### General notes: I will not participate in a flame war on nested virtualization. ;-) I'm aware of risks introduced by nested virtualization. In my situation, I've done the assessment and I accept these risks. --- ### Related issues: I'm more than happy to patch Qubes myself to make this possible. E.g., there is https://groups.google.com/forum/#!msg/qubes-devel/UzO0BsIfIow/wWjpd3IPAgAJ which already contains a patch. Is it really that simple to enable it? Or did things change massively between then and now. There is also https://wiki.xenproject.org/wiki/Nested_Virtualization_in_Xen#Current_status, which I don't understand, because it looks to me that newer versions of Xen won't work but older versions do? Maybe I greatly underestimate the complexity of this matter ...