Hi, [auto build test ERROR on tip/x86/core] [also build test ERROR on v4.7-rc6 next-20160706] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Wei-Jiangang/kexec-Fix-kdump-failure-with-notsc/20160707-152535 config: x86_64-randconfig-s5-07071541 (attached as .config) compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): arch/x86/kernel/machine_kexec_64.c: In function 'machine_kexec': >> arch/x86/kernel/machine_kexec_64.c:272:33: error: implicit declaration of function 'lapic_disabled' [-Werror=implicit-function-declaration] if (image->preserve_context || lapic_disabled()) { ^~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/lapic_disabled +272 arch/x86/kernel/machine_kexec_64.c 266 save_ftrace_enabled = __ftrace_enabled_save(); 267 268 /* Interrupts aren't acceptable while we reboot */ 269 local_irq_disable(); 270 hw_breakpoint_disable(); 271 > 272 if (image->preserve_context || lapic_disabled()) { 273 #ifdef CONFIG_X86_IO_APIC 274 /* 275 * We need to put APICs in legacy mode so that we can --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation -------------- next part -------------- A non-text attachment was scrubbed... Name: .config.gz Type: application/octet-stream Size: 30554 bytes Desc: not available URL: <http://lists.infradead.org/pipermail/kexec/attachments/20160707/4034830e/attachment-0001.obj>