Linux Kernel Module Cheat

If you followed QEMU Buildroot setup, you can now run the executables created by Buildroot directly as:

./run \
  --userland "$(./getvar buildroot_target_dir)/bin/echo" \
  --cli-args='asdf' \
;

To easily explore the userland executable environment interactively, you can do:

./run \
  --arch aarch64 \
  --userland "$(./getvar --arch aarch64 buildroot_target_dir)/bin/sh" \
  --terminal \
;

or:

./run \
  --arch aarch64 \
  --userland "$(./getvar --arch aarch64 buildroot_target_dir)/bin/sh" \
  --cli-args='-c "uname -a && pwd"' \
;