reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/a7acc3c42586b611e6886e6c157acae728ed4374 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Andre-Przywara/arm_mpam-let-low-level-MSC-accessors-return-an-error/20261001-173426 git checkout a7acc3c42586b611e6886e6c157acae728ed4374 # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # clang-24 might not be officially released. Try a lower version if installation fails. git clone https://github.com/intel/lkp-tests.git ~/lkp-tests # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-24 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm64 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-24 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/