Hi Masahiro,

I love your patch! Perhaps something to improve:

[auto build test WARNING on masahiroy-kbuild/for-next]
[cannot apply to arm64/for-next/core gerg-m68knommu/for-next geert-m68k/for-next deller-parisc/for-next powerpc/next s390/features tip/x86/core linus/master v6.0-rc6 next-20220923]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Masahiro-Yamada/kbuild-various-cleanups/20220925-022150
base:   https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next
config: um-x86_64_defconfig
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/d721cc5614aaa17b2965db04e9319d4ef5f7eaf7
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Masahiro-Yamada/kbuild-various-cleanups/20220925-022150
        git checkout d721cc5614aaa17b2965db04e9319d4ef5f7eaf7
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=um SUBARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> /usr/bin/ld: warning: ./arch/x86/um/vdso/vdso.o: missing .note.GNU-stack section implies executable stack
   /usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
   /usr/bin/ld: warning: .tmp_vmlinux.kallsyms1 has a LOAD segment with RWX permissions
   /usr/bin/ld: warning: .tmp_vmlinux.kallsyms1.o: missing .note.GNU-stack section implies executable stack
   /usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
   /usr/bin/ld: warning: .tmp_vmlinux.kallsyms2 has a LOAD segment with RWX permissions
   /usr/bin/ld: warning: .tmp_vmlinux.kallsyms2.o: missing .note.GNU-stack section implies executable stack
   /usr/bin/ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker
   /usr/bin/ld: warning: vmlinux has a LOAD segment with RWX permissions

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