准备工作,阅读【1】中7.5~7.10,阅读【2】【3】中相关部分。
【1】https://pdos.csail.mit.edu/6.828/2020/xv6/book-riscv-rev1.pdfarrow-up-right
【2】https://github.com/mit-pdos/xv6-riscv/blob/riscv/kernel/proc.carrow-up-right
【3】https://github.com/mit-pdos/xv6-riscv/blob/riscv/kernel/sleeplock.carrow-up-right
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