Single Kernel and micro kernel

Single-core and micro-kernel-general Linux technology-Linux programming and kernel information. The following is a detailed description. Single Kernel: the kernel is implemented as a large process and runs in a separate address space at the same time. All kernel services run in one address space and call functions directly between them, which is simple and efficient.

Micro-kernel: functions are divided into independent processes, which communicate with each other through IPC. A high degree of modularization does not affect the failure of one service.

Linux is a single-core structure, while absorbing the advantages of the micro-kernel: modular design, support for dynamic loading of kernel modules.

Linux also avoids the design defect of the microkernel, so that everything runs in the kernel state and calls functions directly without passing messages.