Work Flow

• measure cycle of fast path of TMC
• measure misses of TLB 
• conflict miss
• compulsory miss
• capacity miss

=======================================================================

• Optimization 2 seems useless
• no performance gain in my implementation.
• Large TLB Table: 2^8 -> 2^16
• 2^11 has best performance gain, about 64K bytes.
• performance drop after 2^12, 2^15 and 2^16 -40% in GCC
• why ?

========================================================================
Enable Run-time Optimizations on Cross-ISA System

• Cross-Page Block Linking:
• Other approaches?
• reverse physical page mapping
• Check All conditions
• Large TLB Size
• system time increases along with size
• probably related to tlb flush 
• use structure of array for TLB: TBD
• Combine Big Lv2 Cache + Victim Cacahe
• Hash Table of Linked List
• LRU replacement

========================================================================

• question: is opt5 broken?
• ???
• Run experiments quickly
• 實驗一定要將數據"當下"變成圖表，存下。否則只是廢物。

========================================================================

tlb_table initialization problem:

• First initialized by memset in main->vexpress_a9_init->vexpress_common_init->cpu_init->cpu_arm_init->arm_cpu_reset->tlb_flush
• Then initialized by memset again in main->qemu_system_reset->do_cpu_reset->arm_cpu_reset
• Then initialized by memset AGAIN in main->qemu_system_reset->do_cpu_reset->arm_cpu_reset->tlb_flush