Hi, It's probably a bug fix that unveils the link errors.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: da2f6aba4a21f8da3331e5251a117c52764da579 commit: c60f169202c7643991a8b4bfeea60e06843d5b5a arch/mn10300/kernel/fpu-nofpu.c: needs asm/elf.h date: 3 months ago config: mn10300-allnoconfig (attached as .config) compiler: am33_2.0-linux-gcc (GCC) 4.9.0 reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout c60f169202c7643991a8b4bfeea60e06843d5b5a # save the attached .config to linux build tree make.cross ARCH=mn10300 All errors (new ones prefixed by >>): kernel/built-in.o: In function `.L412': >> core.c:(.sched.text+0x257): undefined reference to `fpu_save' --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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