From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1FA7574C14; Sat, 20 Sep 2025 05:34:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758346459; cv=none; b=mxqXj7ea1a8yfblzZnquo6MMVbp60/JGDbGOgPe+ZzQA8k7S2r5kxVxqaVwKmPgSKOa16JdU925Q9k7QNbdZ9/Wk6ljpynpL6ce3V46QuQlg14prmdoaB2EfJG0wQLNoGlpTWD7wP4/VsZ7F7V7cVsO5LVC48ek66xAkd7uL5so= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758346459; c=relaxed/simple; bh=S3cEpmKIbzopt8ABoWJ6UUjY73Oyss11N7G2FfIJ5WU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=SI7XHhYFCXoQ4bb7+Ef/vMS1EeKBua+h8yC2/6jKbey27RhUV4ozfXtWPRD0jRP+HHi6UZkDtmFvFsP/0T41RTKxa0ulEsCOi/oJ9FiZpZCG5EOE8zXiBzRxwr7S7kL/ihgOcx32z59mS9qUY1oOm9iMDfufKOUPFt6panCPlm4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=Wwr6Adze; arc=none smtp.client-ip=192.198.163.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="Wwr6Adze" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1758346457; x=1789882457; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=S3cEpmKIbzopt8ABoWJ6UUjY73Oyss11N7G2FfIJ5WU=; b=Wwr6AdzeLVndJx0QpMTTU3ittqrsx21xLvlVYG8lFZ9zyUA2ByD0sdf8 Vf7EyIMKY+4aWF5bRmNcKRn7foZpn4IEZlfOaLjifcYVSqbFEoyh85uBc QYQ16ZBdKuNsZt/oJ81DsPLHnKSUw0a0rDmY01BEYT1EUUDkCLZZQEbPK DyrXDZEbjd3zXKBs4D0tHEEPTkcF99dCF7XmT8dUkYG5fz0vXb3zSB3rg xzq13RSCaVsWRRVESv+s0WfyFxCBBn803Ot4ra88FCZfeDw2PTOQLtchI 4SJHsoAroCI0ijEOBhnGCYYfBn4hxpS+5gLriDoISZz0ThzY+A+fsepKt Q==; X-CSE-ConnectionGUID: MhBDIBXHT7O4SbFwf4Bu3w== X-CSE-MsgGUID: fKPwPJQaQLCuN8EiTkdNCg== X-IronPort-AV: E=McAfee;i="6800,10657,11558"; a="59906702" X-IronPort-AV: E=Sophos;i="6.18,280,1751266800"; d="scan'208";a="59906702" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Sep 2025 22:34:15 -0700 X-CSE-ConnectionGUID: 1yKNnilbTnCaq80CuzlxTg== X-CSE-MsgGUID: 8u2zKYD1TvOjvKbhYaEcFw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.18,280,1751266800"; d="scan'208";a="175256038" Received: from lkp-server01.sh.intel.com (HELO 84a20bd60769) ([10.239.97.150]) by orviesa010.jf.intel.com with ESMTP; 19 Sep 2025 22:34:14 -0700 Received: from kbuild by 84a20bd60769 with local (Exim 4.96) (envelope-from ) id 1uzqEd-00054n-0l; Sat, 20 Sep 2025 05:34:11 +0000 Date: Sat, 20 Sep 2025 13:33:26 +0800 From: kernel test robot To: Cong Wang Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev Subject: Re: [RFC Patch 1/7] kexec: Introduce multikernel support via kexec Message-ID: <202509201300.onsuDJUN-lkp@intel.com> References: <20250918222607.186488-2-xiyou.wangcong@gmail.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250918222607.186488-2-xiyou.wangcong@gmail.com> Hi Cong, [This is a private test report for your RFC patch.] kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-everything] [also build test ERROR on linus/master v6.17-rc6 next-20250919] [cannot apply to tip/x86/core powerpc/next powerpc/fixes] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Cong-Wang/kexec-Introduce-multikernel-support-via-kexec/20250919-062852 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20250918222607.186488-2-xiyou.wangcong%40gmail.com patch subject: [RFC Patch 1/7] kexec: Introduce multikernel support via kexec config: x86_64-buildonly-randconfig-002-20250920 (https://download.01.org/0day-ci/archive/20250920/202509201300.onsuDJUN-lkp@intel.com/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250920/202509201300.onsuDJUN-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202509201300.onsuDJUN-lkp@intel.com/ All errors (new ones prefixed by >>): >> kernel/kexec_core.c:1352:7: error: call to undeclared function 'multikernel_kick_ap'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 1352 | rc = multikernel_kick_ap(cpu, kexec_image->start); | ^ kernel/kexec_core.c:1352:7: note: did you mean 'multikernel_kexec'? kernel/kexec_core.c:1333:5: note: 'multikernel_kexec' declared here 1333 | int multikernel_kexec(int cpu) | ^ 1 error generated. vim +/multikernel_kick_ap +1352 kernel/kexec_core.c 1332 1333 int multikernel_kexec(int cpu) 1334 { 1335 int rc; 1336 1337 pr_info("multikernel kexec: cpu %d\n", cpu); 1338 1339 if (cpu_online(cpu)) { 1340 pr_err("The CPU is currently running with this kernel instance."); 1341 return -EBUSY; 1342 } 1343 1344 if (!kexec_trylock()) 1345 return -EBUSY; 1346 if (!kexec_image) { 1347 rc = -EINVAL; 1348 goto unlock; 1349 } 1350 1351 cpus_read_lock(); > 1352 rc = multikernel_kick_ap(cpu, kexec_image->start); -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki