This patch series are intended to test the power8 and power9 Nest Accelerator (NX) GZIP engine that is being introduced by https://lists.ozlabs.org/pipermail/linuxppc-dev/2020-March/205659.html More information about how to access the NX can be found in that patch, also a complete userspace library and more documentation can be found at: https://github.com/libnxz/power-gzip Thanks, Raphael