core.c:undefined reference to `fpu_save'
From: kbuild test robot
Date: Sun Jul 03 2016 - 07:18:51 EST
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: 4f302921c1458d790ae21147f7043f4e6b6a1085
commit: c60f169202c7643991a8b4bfeea60e06843d5b5a arch/mn10300/kernel/fpu-nofpu.c: needs asm/elf.h
date: 4 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'
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