reproduce (this is a W=1 build):
        git checkout a7f2e10ecd8f18b83951b0bab47ddaf48f93bf47
        b4 shazam https://lore.kernel.org/r/20250403-riscv-swab-v3-1-3bf705d80e33@iencinas.com
        # 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