LinuxCon + ContainerCon + CloudOpen China 2018

LKL (Linux Kernel Library) is a great work of reusing the Linux kernel code as extensively as possible with minimal effort and reduced maintenance overhead. It may be used on many potential interesting scenarios, e.g. to create a near full feature LibOS without reinvent wheels or to reuse mature network stack of Linux even in other OS. Internally, it provides a pseudo architecture that may be implemented under user space. However, it still lacks some important features so far, especially SMP support. We would like introduce to its internals and some highlights of our works : a try of adding SMP support on x86 and AArch64, which contains how to support IPI, across-CPU timing and tree RCU. Device drivers of Linux are great resources of open sources world, another interesting work is a try of reusing Linux device drivers by extending LKL. Lastly, we will show some drawbacks of LKL too.