Intel server machine. The TLB flushing IPI can reduce up to44.3%. 这个patch的实现,其实是参考pte_clear_flush函数,判定是否需要执行tlb flush操作,必须确认pte access是否支持; 127 /* 128 * Could the pte be present in the TLB? We must check mm_tlb_flush_pending 129 * so that we don't erro...