Unikernels are mentioned in passing, but are not the cause of the speedup. The main point of the paper is instead the introduction of "LightVM, a complete re-de

Unikernels are mentioned in passing, but are not the cause of the speedup. The main point of the paper is instead the introduction of "LightVM, a complete re-design of the basic Xen control plane optimized to provide lightweight virtualization".