[kernel] xbook2 kernel

[JasonHu]

Hello everyone, this time my xbook2 kernel is a hybrid kernel, combining macro kernel and micro kernel, made some improvements, the file system and network protocol are all run as a service in user mode, the kernel becomes smaller, but efficiency It may be lower, and I will gradually improve efficiency in the future.
This is my github address, everyone is welcome to check, and our open source website, welcome to visit!

https://github.com/hzcx998/xbook2
http://www.book-os.org