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/757eb114409e356da9a8ba10930884ba3c39b155 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Bibek-Kumar-Patro/iommu-arm-smmu-re-enable-context-caching-in-smmu-reset-operation/20240627-074037 git checkout 757eb114409e356da9a8ba10930884ba3c39b155 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.2.0 ~/lkp-tests/kbuild/make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__ -fmax-errors=unlimited -fmax-warnings=unlimited' O=build_dir ARCH=arm64 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.2.0 ~/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/iommu/arm/arm-smmu/