drivers/vfio/pci/vfio_pci_zdev.c:151: undefined reference to `kvm_s390_pci_register_kvm'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   7ebfc85e2cd7b08f518b526173e9a33b56b3913b
commit: 8061d1c31f1a018281bc9877ecce44bfc779e21d vfio-pci/zdev: add open/close device hooks
date:   5 weeks ago
config: s390-randconfig-s042-20220811 (https://download.01.org/0day-ci/archive/20220812/202208120916.loN3Qrx7-lkp@xxxxxxxxx/config)
compiler: s390-linux-gcc (GCC) 12.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8061d1c31f1a018281bc9877ecce44bfc779e21d
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 8061d1c31f1a018281bc9877ecce44bfc779e21d
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=s390 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

   s390-linux-ld: drivers/vfio/pci/vfio_pci_zdev.o: in function `vfio_pci_zdev_open_device':
>> drivers/vfio/pci/vfio_pci_zdev.c:151: undefined reference to `kvm_s390_pci_register_kvm'
   s390-linux-ld: drivers/vfio/pci/vfio_pci_zdev.o: in function `vfio_pci_zdev_close_device':
>> drivers/vfio/pci/vfio_pci_zdev.c:161: undefined reference to `kvm_s390_pci_unregister_kvm'


vim +151 drivers/vfio/pci/vfio_pci_zdev.c

   140	
   141	int vfio_pci_zdev_open_device(struct vfio_pci_core_device *vdev)
   142	{
   143		struct zpci_dev *zdev = to_zpci(vdev->pdev);
   144	
   145		if (!zdev)
   146			return -ENODEV;
   147	
   148		if (!vdev->vdev.kvm)
   149			return 0;
   150	
 > 151		return kvm_s390_pci_register_kvm(zdev, vdev->vdev.kvm);
   152	}
   153	
   154	void vfio_pci_zdev_close_device(struct vfio_pci_core_device *vdev)
   155	{
   156		struct zpci_dev *zdev = to_zpci(vdev->pdev);
   157	
   158		if (!zdev || !vdev->vdev.kvm)
   159			return;
   160	
 > 161		kvm_s390_pci_unregister_kvm(zdev);

-- 
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