基于多页的龙芯2F软TLB重载入异常处理改进

Loongson 2F software TLB reload exception handling improved based on multi-page

龙芯2F系统在TLB替换处理上开销较大,现有软TLB技术从减少TLB重载入异常处理时间方面考虑,利用软TLB来缓存TLB表项,提高替换处理中Cached命中率,减少了重载入异常处理时间。为进一步提高TLB效率,设计采用多页技术提高TLB的覆盖率,减少TLB替换次数,进而减少重载入异常处理的次数,达到提高系统性能的目的。

Loongson 2F handling system in the TLB replacement cost of a larger, existing software technologies from reducing the TLB exception handling heavy loads of time considerations, the use of soft TLB to cache TLB entries, replace the processing Cached improve hit rate and reduce the heavy load exception handling time.To further improve the efficiency of TLB, design multipage technology to improve TLB coverage, reducing the number of TLB replacement, thereby reducing eth nunber of exception handling heavy loads, aims to improve system performance.