Linux kernel modules in safe Rust

1. Install cargo-xbuild and the rust-src rustup component:

cargo install cargo-xbuild
rustup component add --toolchain=nightly rust-src

2. cd to one of the examples

cd hello-world

3. Build the static object with cargo xbuild, pointing it at our custom target

cargo xbuild --target $(pwd)/../x86_64-linux-kernel-module.json

4. Build the kernel module using the Linux kernel build system (kbuild)

make

5. Load and unload the module!

sudo insmod helloworld.ko
sudo rmmod helloworld
dmesg | tail