Supporting the whole range of personal computer and workstation platforms was just the beginning and the developers set on to support the various CPUs used in embedded systems such as: ARM, Motorola 68000, SuperH and the newer: AVR32, Blackfin and Cris CPUs.

As some of the CPUs do not come with a Memory Management Unit (MMU), support for the modified Linux variant named uClinux supporting MMU-less architectures was added.

Additionally add-on kernel patches such as RTAI for real-time capability can optionally be enabled to be applied.

With all the many volunteers and employees working and contributing to Linux world-wide Linux is one of the most flexible kernel to choose. Even in absence of a MMU it is capable of running on a wide range of CPUs, supporting real-time requirements and allows choosing from a great pool of different CPU architectures to match exactly the performance and power consumption requirements set by the target system specification.