Hi. Recently, "Makefiles", "Kconfig" files were given with SPDX License tags. Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Date: Sun May 19 13:07:45 2019 +0100 treewide: Add SPDX license identifier - Makefile/Kconfig But, the file name "Kbuild" is also a Makefile. Conventionally, Linux build system uses both "Kbuild" and "Makefile". For example, SPDX tag is missing in arch/x86/Kbuild arch/x86/include/uapi/asm/Kbuild arch/x86/include/asm/Kbuild Will somebody work on "Kbuild" files please ? -- Best Regards Masahiro Yamada