I committed most of Romans work in the linuxolator to current. The new syscalls aren’t used until you run
sysctl compat.linux.osrelease=2.6.16
to switch back (after exiting all linux programs) you just have to run
sysctl compat.linux.osrelease=2.4.2
But you have to do this on i386. Amd64 support is not complete (and besides this, amd64 is still broken and nobody provided the neccessary debugging info to jhb@).
There are some known problems with osrelease=2.6.16, e.g., problems with futexes (visible in acroread, realplay and skype), but some programs already run without obvious problems (linux-firefox, linux-opera).
Any reports about new problems to netchild@ and rdivacky@ please. Reviews, debugging info and patches are welcome too.