reproduce: git clone https://github.com/intel/lkp-tests.git ~/lkp-tests # apt-get install sparse # sparse version: v0.6.4-66-g0196afe1 # https://github.com/intel-lab-lkp/linux/commit/d62ae4cd35d3ca642a89ece03c13d9776c49770c git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Jonathan-Cameron/memregion-Support-fine-grained-invalidate-by-cpu_cache_invalidate_memregion/20250624-235402 git checkout d62ae4cd35d3ca642a89ece03c13d9776c49770c # save the config file mkdir build_dir && cp config build_dir/.config ~/lkp-tests/kbuild/make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__ -fmax-errors=unlimited -fmax-warnings=unlimited' O=build_dir ARCH=arm64 olddefconfig ~/lkp-tests/kbuild/make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__ -fmax-errors=unlimited -fmax-warnings=unlimited' O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/base/