linux-kernel - undefined reference to `memremap'

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Message-ID: <201905181712.RQuLwcQQ%lkp@intel.com>
Date:   Sat, 18 May 2019 17:08:14 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org
Subject: undefined reference to `memremap'

Hi Paolo,

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:   72cf0b07418a9c8349aa9137194b1ccba6e54a9d
commit: c011d23ba046826ccf8c4a4a6c1d01c9ccaa1403 kvm: fix compilation on aarch64
date:   21 hours ago
config: s390-defconfig (attached as .config)
compiler: s390x-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout c011d23ba046826ccf8c4a4a6c1d01c9ccaa1403
        # save the attached .config to linux build tree
        GCC_VERSION=7.2.0 make.cross ARCH=s390 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   s390x-linux-gnu-ld: arch/s390/../../virt/kvm/kvm_main.o: in function `kvm_vcpu_map':
>> (.text+0x803c): undefined reference to `memremap'
   s390x-linux-gnu-ld: arch/s390/../../virt/kvm/kvm_main.o: in function `kvm_vcpu_unmap':
>> (.text+0x82e4): undefined reference to `memunmap'

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0-DAY kernel test infrastructure                Open Source Technology Center
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