摘要： 针对64 位的Linux 提出了一个减少TLB 失效开销的方法——FAST_TLB_REFILL（快速TLB 重载入）。测试结果表明，这种方法可以将TLB 失效处理时间减少30%以上，对TLB 失效比较频繁的程序会有1%~7%的性能提高。

关键词: TLB 重载入异常；STLB；FAST_TLB_REFILL；龙芯2 号CPU

Abstract: This paper presents a novel method named FAST_TLB_REFILL to decrease the cost of TLB miss. This method decreases the time to handle TLB miss by more than 30%, and improves the performance of high frequent TLB miss applications by 1% to 7%.

Key words: TLB refill exception; Software TLB; FAST_TLB_REFILL; Godson2 CPU