tree: https://github.com/intel/tdx.git guest head: 3e3ee9731488f58ed27a7ec4ce674f602de44e73 commit: e9464906e1a3feb753ec5169ea0d153bf86f842e [55/127] x86/acpi, x86/boot: Add multiprocessor wake-up support config: i386-randconfig-c021-20210912 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/intel/tdx/commit/e9464906e1a3feb753ec5169ea0d153bf86f842e git remote add intel-tdx https://github.com/intel/tdx.git git fetch --no-tags intel-tdx guest git checkout e9464906e1a3feb753ec5169ea0d153bf86f842e # save the attached .config to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from <command-line>: arch/x86/kernel/acpi/boot.c: In function 'acpi_wakeup_cpu': 328 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^ include/linux/compiler_types.h:309:4: note: in definition of macro '__compiletime_assert' 309 | prefix ## suffix(); \ | ^~~~~~ include/linux/compiler_types.h:328:2: note: in expansion of macro '_compiletime_assert' 328 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) | ^~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:331:2: note: in expansion of macro 'compiletime_assert' 331 | compiletime_assert(__native_word(t), \ | ^~~~~~~~~~~~~~~~~~ arch/x86/include/asm/barrier.h:65:2: note: in expansion of macro 'compiletime_assert_atomic_type' 65 | compiletime_assert_atomic_type(*p); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/asm-generic/barrier.h:138:33: note: in expansion of macro '__smp_store_release' 138 | #define smp_store_release(p, v) __smp_store_release(p, v) | ^~~~~~~~~~~~~~~~~~~ arch/x86/kernel/acpi/boot.c:366:2: note: in expansion of macro 'smp_store_release' 366 | smp_store_release(&acpi_mp_wake_mailbox->wakeup_vector, start_ip); | ^~~~~~~~~~~~~~~~~ vim +/__compiletime_assert_230 +328 include/linux/compiler_types.h eb5c2d4b45e3d2d Will Deacon 2020-07-21 314 eb5c2d4b45e3d2d Will Deacon 2020-07-21 315 #define _compiletime_assert(condition, msg, prefix, suffix) \ eb5c2d4b45e3d2d Will Deacon 2020-07-21 316 __compiletime_assert(condition, msg, prefix, suffix) eb5c2d4b45e3d2d Will Deacon 2020-07-21 317 eb5c2d4b45e3d2d Will Deacon 2020-07-21 318 /** eb5c2d4b45e3d2d Will Deacon 2020-07-21 319 * compiletime_assert - break build and emit msg if condition is false eb5c2d4b45e3d2d Will Deacon 2020-07-21 320 * @condition: a compile-time constant condition to check eb5c2d4b45e3d2d Will Deacon 2020-07-21 321 * @msg: a message to emit if condition is false eb5c2d4b45e3d2d Will Deacon 2020-07-21 322 * eb5c2d4b45e3d2d Will Deacon 2020-07-21 323 * In tradition of POSIX assert, this macro will break the build if the eb5c2d4b45e3d2d Will Deacon 2020-07-21 324 * supplied condition is *false*, emitting the supplied error message if the eb5c2d4b45e3d2d Will Deacon 2020-07-21 325 * compiler has support to do so. eb5c2d4b45e3d2d Will Deacon 2020-07-21 326 */ eb5c2d4b45e3d2d Will Deacon 2020-07-21 327 #define compiletime_assert(condition, msg) \ eb5c2d4b45e3d2d Will Deacon 2020-07-21 @328 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) eb5c2d4b45e3d2d Will Deacon 2020-07-21 329 :::::: The code at line 328 was first introduced by commit :::::: eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5 compiler.h: Move compiletime_assert() macros into compiler_types.h :::::: TO: Will Deacon <will(a)kernel.org&gt; :::::: CC: Will Deacon <will(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org