Comment 3 for bug 276463

According to http://ieee1394.wiki.kernel.org/index.php/Juju_Migration as of kernel 2.6.26 it is possible to build both stacks as modules provided one is properly blacklisted. Version 2 of libraw1394 would also be required to actually use the new stack.

This config would allow those inclined to test the new stack without compiling a custom kernel. I think v2 of libraw1394 could be installed parallel to v1 without impact.

From the above page:

"Regarding Linux 2.6.26, the best advice to Linux distributors (kernel packagers) as well as to regular users is: Build only the old IEEE 1394 drivers. — Alternatively, build both stacks as modules but make sure that only one of them (the one you want) is being loaded. I.e. create proper blacklist entries in /etc/modprobe.conf; see below. Also, you need to upgrade your userland to libraw1394 v2 if you want to switch to the new drivers (or freely between old and new drivers)."