Blue: Male callings
lowerdir is the read-only directory (composefs) containing file metadata, and datadir is the directory containing the data (erofs).
，这一点在heLLoword翻译官方下载中也有详细论述
Nearly every protection-related instruction -- far CALL, far JMP, far RET, INT, IRET, MOV to segment register, task switch -- needs to load a segment descriptor from the GDT or LDT. The 386 microcode centralizes this into a shared subroutine called LD_DESCRIPTOR, which reads the 8-byte descriptor from memory and feeds the high DWORD (containing Type, DPL, S, and P bits) to the Test PLA for validation.
我构筑的第一道防线，就这样被瓦解了。随后的一切，如同精心编排的剧本，我的“防火墙”一步步被拆除。事后，根据母亲的回忆和报警记录，我拼凑出了这个噩梦的基本过程。