reproduce:
        git remote add krzk https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux.git
        git fetch krzk for-next
        git checkout krzk/for-next
        b4 shazam https://lore.kernel.org/r/20250223123044.725493-5-ivo.ivanov.ivanov1@gmail.com
        make menuconfig
        # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS
        # install Sphinx 2.4.4
        make htmldocs