Working wonderfully.
Delta 44 down to 2ms, Intel HDA to 8. No compensations made either, this is
a full-featured mobile workstation with suspension, dynamic frequency
scaling, and everything else working as well. No extensive patching/tweaking
of kernel options - just the essentials.
I believe this is not only an improvement with RT, but the Linux kernel has
also improved greatly over the past 3 years.