Other kernel loaded as process

As we have nano-kernel, so we have possibility to load other kernels (something like linux kernel) under our nano-kernel, or not?
What do you think about it?

JNode's nano-kernel would not support this.

The JNode nano-kernel is far too primitive to support loading and running other kernels. (This is by design ... we want as much as possible of JNode to be implemented in Java.)

Anyway why would you want to do this? Surely it would make more sense to run JNode as a guest OS on (say) Xen and run the other kernel as another guest.