tpressure

Unfortunately, your Intel P8600 CPU does not support the XSAVE instruction which is currently a requirement to run VirtualBox with our KVM backend.

Intel Core i5 M 460 is Nehalem (microarchitecture) which also does not support XSAVE. Currently, you need at least Sandy Bridge (2nd generation Core Processors) in order to use VirtualBox...

> Alright, thanks for the info! It seems you are politely saying all my CPUs are old.. :) :smile: XSAVE _should_ be the only thing ... can't give you 100%...

Closing this because the limitation has been added to the readme.

> Then what I saw in virt-manager must have been managed by qemu-kvm. It's a bit of a disappointment, since it appears to work better in that regard and it...

@dionorgua can you try building it with `--disable-hardening` and check if this changes the behavior?

@dionorgua this is correct. The KVM-Backend only works with `--disable-hardening`. The hardening feature is mainly thre to prevent side-loading of VBox kernel code, which is no longer present with the...

@dionorgua I agree. Maybe you could open another ticket for this specific issue so we can track this correctly?

You can generated a patch like that from the cloned repo: `git diff -u baa237b0d2ed1d715b8163ff2839301771fd3ab8 > vbox-kvm.patch`

@blitz can we close this now that https://github.com/NixOS/nixpkgs/pull/288579 has been merged?