Linaro Stable Kernel (LSK) aims to provide a stable basis for system integration of ARM hardware, integrating Linaro developed features available in mainline with kernel.org Long Term Stable (LTS) releases to allow integration of those features in production systems. Most LSK features can be disabled at either build or run time so are included as part of the core LSK functionality. To support those feature sets which have substantial impacts on the kernel and cannot be disabled at build or run time, the LSK is provided in multiple flavours. Currently these are:
|Feature||LSK v3.18||LSK v4.1||LSK v4.4||LSK 4.9|
* OPTEE(Open Portable Trusted Execution Environment) out of upstream code were maintained as separate branches, [v3.18|v4.4|v4.9]/topic/optee, out of the LSK mainline. From lsk 4.9, the upstream merged OPTEE also backported into LSK mainline.
* ION is backported as out of LSK tree branch v4.9/topic/ion, since it includs ABI changes.