[jcjgraf]

Indeed, victim (e.g. userspace hypervisor like QEMU, firecracker, etc) and attacker (e.g. malicious guest) need to run on the same core. But with VMScape this is always give, because a guest runs as the same process as its hypervisor. Before VMScape, developers only isolated different VMs, different processes and supervisor domains from malicious users. VMScape explits a novel threat model.