学：读本文件，了解相关OS知识，在某个开发环境（在线或本地）中正确编译运行rcore-tutorial-ch6；根据本章的exercise.md ...

前置知识：建议先完成第一章（tg-rcore-tutorial-ch1）和第二章（tg-rcore-tutorial-ch2）的学习，理解裸机启动、Trap 处理、系统调用等基础概念。 ch3/ ├── .cargo/ │ └── config.toml # Cargo 配置：交叉编译目标和 QEMU runner ├── .gitignore # Git 忽略规则 ├── build.rs ...

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