reproduce (this is a W=1 build): # https://github.com/LuBaolu/intel-iommu/commit/5157215b83e7ab5a8457a87584a85f1126c4c4ce git remote add lubaolu-intel-iommu https://github.com/LuBaolu/intel-iommu.git git fetch --no-tags lubaolu-intel-iommu vtd-update-for-v6.10 git checkout 5157215b83e7ab5a8457a87584a85f1126c4c4ce # 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/intel/