I followed the instructions on that linuxreviews.org page on my studio DAW (i7-4770 with HT disabled)... Debian 4.9.0.11-rt kernel, adding "noibrs noibpb nopti nospectre_v2 nospectre_v1 l1tf=off nospec_store_bypass_disable no_stf_barrier mds=off mitigations=off" to the grub command line. Considerable performance improvement... my benchmark for compiling REAPER went from 2:26 to 1:54. Of course, I'll try not to browse the web on this computer...
