[Lguest] Communication between host and guest

[Rusty Russell]

Earlence Fernandes <earlenceferns at gmail.com> writes:
> So the rings are always designed to be in userspace?
> Or can I simply allocate them in kernel space?

Well, if you put them in kernel space, how will the guest reach them?
It's simpler to put them in userspace.

> What is the point of the "kernel-space" functions then?

The CAIF system uses virtio rings to talk to heterogeneous CPUs,
entirely in-kernel.

Cheers,
Rusty.