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简介
Lec01 Introduction and Examples (Robert)
Lec03 OS Organization and System Calls (Frans)
3.1 上一节课回顾
3.2 操作系统隔离性（isolation）
3.3 操作系统防御性（Defensive）
3.4 硬件对于强隔离的支持
3.5 User/Kernel mode切换
3.6 宏内核 vs 微内核 （Monolithic Kernel vs Micro Kernel）
3.7 编译运行kernel
3.8 QEMU
3.9 XV6 启动过程
Lec04 Page tables (Frans)
Lec05 Calling conventions and stack frames RISC-V (TA)
Lec06 Isolation & system call entry/exit (Robert)
Lec08 Page faults (Frans)
Lec09 Interrupts (Frans)
Lec10 Multiprocessors and locking (Frans)
Lec11 Thread switching (Robert)
Lec13 Sleep & Wake up (Robert)
Lec14 File systems (Frans)
Lec15 Crash recovery (Frans)
Lec16 File system performance and fast crash recovery (Robert)
Lec17 Virtual memory for applications (Frans)
Lec18 OS organization (Robert)
Lec19 Virtual Machines (Robert)
Lec20 Kernels and HLL (Frans)
Lec21 Networking (Robert)
Lec22 Meltdown (Robert)
Lec23 RCU (Robert)
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Lec03 OS Organization and System Calls (Frans)
准备工作：阅读【1】中的chapter2和XV6的代码。
【1】
https://pdos.csail.mit.edu/6.828/2020/xv6/book-riscv-rev1.pdf
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1.10 I/O Redirect
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3.1 上一节课回顾
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