快捷键
https://qemu-project.gitlab.io/qemu/system/keys.html
https://qemu-project.gitlab.io/qemu/system/mux-chardev.html
GDB调试
https://qemu-project.gitlab.io/qemu/system/gdb.html#gdb-usage
工具使用说明
https://qemu-project.gitlab.io/qemu/tools/index.html#tools