arm archtecture
ARMv8 架构与指令集.学习笔记
https://www.cnblogs.com/lvdongjie/p/6644821.html
arm registers
https://developer.arm.com/documentation/ddi0500/e/debug/memory-mapped-register-summary
stage 1 and stage2 address translation
https://yomostatic.oss-cn-shenzhen.aliyuncs.com/courses/10_arm_virtualization/chapter_4_Deep_in_Arm_Virtualization.pdf