reproduce (this is a W=1 build):
        # https://github.com/sean-jc/linux/commit/bbe82c73f0093dfe41aecd96de0fa95b6a014be9
        git remote add sean-jc https://github.com/sean-jc/linux
        git fetch --no-tags sean-jc x86/unfudge_irq_bypass
        git checkout bbe82c73f0093dfe41aecd96de0fa95b6a014be9
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash