25. A Framework for Porting Linux OS to a cc-NUMA Server Based on Loongson Processors

In order to make the Linux operating system available on a cache coherence NUMA (cc-NUMA) server based on Loongson processors, a family of general-purpose MIPS64 CPUs developed by the Institute of Computing Technology in China, this paper proposes a framework for porting Linux operating system to this cc-NUMA server. Researchers present the overall port scheme after analyzing the framework of the Linux kernel and the architecture of the hardware platform, and then they discuss the transplantation in details with processor-level transplantation, memory management transplantation, interrupt and trap transplantation. The performance evaluation shows that the whole system works stable and the ported operating system could reach about 30 % of the theoretical peak value of floating-point calculation. The method could port Linux OS to the target board successfully and can be used on other platforms. The research has great significance to the development of the domestic Loongson processor and the cc-NUMA platform based on Loongson processors.