reproduce (this is a W=1 build):
        git checkout 3d5f968a177d468cd13568ef901c5be84d83d32b
        b4 shazam https://lore.kernel.org/r/20240826-iopf-for-all-v1-4-59174e6a7528@samsung.com
        # 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/iommu/