reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/651c474aa81fd5a23e9392b8bdb69a6b55412111
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Ashwin-Gundarapu/x86-acpi-remove-unused-ACPI_FLUSH_CPU_CACHE-macro/20260614-224607
        git checkout 651c474aa81fd5a23e9392b8bdb69a6b55412111
        # apt-get install llvm-dev

        # save the config file
        make W=1 ARCH=i386 olddefconfig
        make W=1 ARCH=i386 
        make W=1 headers_install
        make W=1 -C tools/testing/selftests