reproduce (this is a W=1 build):
        # https://github.com/Xilinx/linux-xlnx/commit/ffcd87653ec43ef1f8c7de5718e5f8da1026d48d
        git remote add xilinx-xlnx https://github.com/Xilinx/linux-xlnx
        git fetch --no-tags xilinx-xlnx xlnx_rebase_v6.6_LTS_2024.1_update
        git checkout ffcd87653ec43ef1f8c7de5718e5f8da1026d48d
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash