Lguest: minimal 32-bit x86 hypervisor for the Linux kernel

Ran across this in linux-source-2.6.32/Documentation/lguest

Just how many Hypervisors are shipped in the Linux Kernel now? KVM,qemu and lguest at least. And extensions for Xen and VmWare.

http://lguest.ozlabs.org

__
 (___()'`;  Rusty's Remarkably Unreliable Guide to Lguest
 /,    /`      - or, A Young Coder's Illustrated Hypervisor
 \\"--\\    http://lguest.ozlabs.org

Lguest is designed to be a minimal 32-bit x86 hypervisor for the Linux kernel,
for Linux developers and users to experiment with virtualization with the
minimum of complexity.  Nonetheless, it should have sufficient features to
make it useful for specific tasks, and, of course, you are encouraged to fork
and enhance it (see drivers/lguest/README).

Features:

- Kernel module which runs in a normal kernel.
- Simple I/O model for communication.
- Simple program to create new guests.
- Logo contains cute puppies: http://lguest.ozlabs.org

Developer features:

- Fun to hack on.
- No ABI: being tied to a specific kernel anyway, you can change anything.
- Many opportunities for improvement or feature implementation.