Released by Linus Torvalds on September 15th, Linux kernel 5.3 is the latest and most advanced kernel series for Linux-based operating systems and introduces support for the Intel Speed Select feature to make power tuning much easier on some Xeon servers, as well as support for AMD Radeon Navi GPUs in the AMDGPU driver. It also adds support for Zhaoxin x86 CPUs, support for utilizing the clamping mechanism in power-asymmetric processors, support for the umwait x86 instructions for more power efficient userspace, support for 16 millions new IPv4 addresses in the 0.0.0.0/8 range, and support for the lightweight and flexible ACRN embedded hypervisor.