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List:       lguest
Subject:    Re: [Lguest] Communication between host and guest
From:       Rusty Russell <rusty () rustcorp ! com ! au>
Date:       2013-06-03 0:25:42
Message-ID: 87a9n8uk3t.fsf () rustcorp ! com ! au
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Earlence Fernandes <earlenceferns@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.
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