[libvirt-users] Access to virtualization on a multi-user system

Hi libvirt-users, I find myself wanting to do something that seems like it must have some obvious solution: I have multiple users (let's just assume local Unix accounts) on a Linux system, and I want them all to have access to KVM-accelerated virtualization. But, I don't want them to be able to meddle with each other's virtual machines. Is there a solution to this problem? Methods of attack that have occured to me: - Use PolicyKit to only allow a user to access qemu:///system VMs that are somehow marked as owned by that user - Run multiple libvirt qemu:///system daemons and restrict access to each on a per-user basis - Allow qemu:///session VMs to actually be KVM-accelerated (this seems like the best way to do it, but I have no idea if that's even possible) Again, the third seems like the best way, but I'm not sure of how to allow such VMs to be KVM-accelerated, and not sure if it's possible for them to use anything other than usermode networking. Hopefully I'm missing some obvious way to do it! Thanks for any assistance!