reproduce:
        # https://github.com/AsahiLinux/linux/commit/d33e6a701bd26fadd63f260c9b1dbdee36ce8e2b
        git remote add asahilinux https://github.com/AsahiLinux/linux
        git fetch --no-tags asahilinux bits/110-smc
        git checkout d33e6a701bd26fadd63f260c9b1dbdee36ce8e2b
        make menuconfig
        # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS
        # pip install -r Documentation/sphinx/requirements.txt
        make htmldocs