On Fri, 23 Jun 2023, Marc Zyngier wrote:
That sounds great, but my initial question would be whether, with such a
setup, one could then run VMs under such a kernel without hardware that
supports nested virtualisation? I suspect the answer would be no.
The answer is yes. All you need to do is to switch between the host
and guest stage-2s in the hypervisor, which is what KVM running in
protected mode does.
Well I think his point was that there are machines running without a
hypervisor and kernel replication needs to work on that. We certainly
benefit a lot from kernel replication and our customers may elect to run
ARM64 kernels without hypervisors on bare metal.
