【摘要】 多核已成为处理器发展的趋势,我国自主设计和研发的龙芯也已有相应的多核产品——龙芯3A等系列。利用QEMU在龙芯上运行x86的操作系统和应用程序是推广龙芯使用的一种有效方法。目前,官方发布的QEMU还不能利用多核并行化运行,造成巨大的资源浪费。为充分使用龙芯3A的多核,就QEMU在龙芯3A上的多核并行化问题进行研究,发现并解决了移植过程中遇到的原子指令问题,使得QEMU全系统模拟器能利用龙芯3A的多核来稳定地支持通用操作系统windows XP和x86/Linux的运行。更多还原

【Abstract】 Multi-core has become the development trend of the processor. The Loongson,as China’s independently designed and developed chip,also has its corresponding multi-core product,the Loongson-3A series. A good way to promote the use of Loongson is to make x86 operating systems and applications run on the Loongson by QEMU. Currently,the official release of QEMU can not yet make use of multi-core to run parallelly,this results in a huge waste of resources. For full use of multi-core of Loongson-3A,in this paper we explore the multi-core parallelisation issue of QEMU on Loongson-3A processor hardware platform,find and give solution to the atomic instruction problem in transplant process,and enable the QEMU systemwide simulator to take the advantages of multi-core of Loongson-3A to support the common operating systems as windows XP and x86 / Linux stably.更多还原