A way to build the kgraft samples easily and additional scripts.
Install anything you need to build a kernel module.
Then type make.
Insert the module:
sudo insmod kgraft_patcher.ko
Check dmesg, and you'll need to wait for everything to converge.
If you are impatient you can use the hurryup.sh script.
Tested on Ubuntu Utopic with the following build: http://people.canonical.com/~arges/kgraft-utopic/
Git tree for kernel sources here: http://zinc.ubuntu.com/git?p=arges/ubuntu-utopic.git;a=shortlog;h=refs/heads/kgraft-utopic
Original sources here: https://git.kernel.org/cgit/linux/kernel/git/jirislaby/kgraft.git/
Thanks to Jiri for his help via email on getting this working.