> On 10 Jul 2020, at 16:00, Jason Long <hack3r...@yahoo.com> wrote: > > Thank you Richard. > Kernel == The libraries that an App need to run. > Am I right?
In the context of a unikernel, I think that’s a reasonable analogy. But those libraries will not perform all the functions you would normally expect an OS kernel to perform. > In the Unikernel, no operating system exist and the Xen play the role of OS. > Is it true? "It depends.” What do you mean by the operating system? In terms of functionality, for a unikernel system, much of the functionality you would usually rely on the operating system to perform (in most cases, by a kernel) is provided by library code (unikernels — certainly Mirage OS — are strongly inspired by library operating systems). But not all — if you are using Xen as your host environment then yes, Xen will provide some of that functionality as well. > The Xen hypervisor can do anything that an OS kernel do??? I don’t think that’s a well-formed question — first, you probably need to declare what an OS kernel can do. > The source of photo is: https://github.com/cetic/unikernels > <https://github.com/cetic/unikernels> > > Can you show me a clear and better diagram about Unikernel? Well, it depends what you want the diagram to help explain. I don’t have any to hand right now. — Richard Mortier richard.mort...@cl.cam.ac.uk
