[$] Hash-based module integrity for reproducible distributions

We last looked in on hash-based integrity checking for kernel modules just over a year and half ago. Since that time, the patch set has undergone multiple revisions. At the 2026 Linux Plumbers Conference (LPC), Thomas Weißschuh described the need for kernel-module integrity guarantees while still providing reproducible builds, how his patches implement that, and some ideas for possible further work.