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Subject[jgunthorpe:vfio_iommufd 25/29] drivers/vfio/vfio_main.c:600: undefined reference to `iommufd_vfio_compat_ioas_id'
tree:   https://github.com/jgunthorpe/linux vfio_iommufd
head: d2ab4343c9f524e9404059830828188b0f8a15b6
commit: 41be72284fea27e79bd85a42d1967b13d7f26147 [25/29] vfio-iommufd: Allow iommufd to be used in place of a container fd
config: microblaze-randconfig-r001-20220820 (https://download.01.org/0day-ci/archive/20220820/202208201310.oYoCaywG-lkp@intel.com/config)
compiler: microblaze-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/jgunthorpe/linux/commit/41be72284fea27e79bd85a42d1967b13d7f26147
git remote add jgunthorpe https://github.com/jgunthorpe/linux
git fetch --no-tags jgunthorpe vfio_iommufd
git checkout 41be72284fea27e79bd85a42d1967b13d7f26147
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=microblaze SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

microblaze-linux-ld: drivers/vfio/vfio_main.o: in function `vfio_group_ioctl_set_container':
>> drivers/vfio/vfio_main.c:600: undefined reference to `iommufd_vfio_compat_ioas_id'


vim +600 drivers/vfio/vfio_main.c

568
569 static int vfio_group_ioctl_set_container(struct vfio_group *group,
570 int __user *arg)
571 {
572 struct vfio_container *container;
573 struct iommufd_ctx *iommufd;
574 struct fd f;
575 int ret = -EINVAL;
576 int fd;
577
578 if (get_user(fd, arg))
579 return -EFAULT;
580
581 f = fdget(fd);
582 if (!f.file)
583 return -EBADF;
584
585 down_write(&group->group_rwsem);
586 if (vfio_group_has_container(group))
587 goto out_unlock;
588
589 container = vfio_container_from_file(f.file);
590 if (container) {
591 ret = vfio_container_attach_group(group, container);
592 goto out_unlock;
593 }
594
595 iommufd = iommufd_ctx_from_file(f.file);
596 if (!IS_ERR(iommufd)) {
597 u32 ioas_id;
598
599 group->iommufd = iommufd;
> 600 ret = iommufd_vfio_compat_ioas_id(iommufd, &ioas_id);
601 goto out_unlock;
602 }
603
604 out_unlock:
605 up_write(&group->group_rwsem);
606 fdput(f);
607 return ret;
608 }
609

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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