reproduce (this is a W=1 build):
        # https://github.com/zen-kernel/zen-kernel/commit/567908cc05dc5e02b1b9c26620bce3791559f9d4
        git remote add zen https://github.com/zen-kernel/zen-kernel
        git fetch --no-tags zen 6.11/zen-sauce
        git checkout 567908cc05dc5e02b1b9c26620bce3791559f9d4
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=um olddefconfig
        make W=1 O=build_dir ARCH=um SHELL=/bin/bash drivers/pci/controller/