reproduce (this is a W=1 build):
        # https://github.com/avpatel/linux/commit/774c4e250a9c302151bb8d7b50565c1c228cf3fb
        git remote add avpatel https://github.com/avpatel/linux.git
        git fetch --no-tags avpatel riscv_raid6_rvv_v5
        git checkout 774c4e250a9c302151bb8d7b50565c1c228cf3fb
        # 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 drivers/acpi/