[iommu:core 10/22] include/linux/iommu.h:1085: multiple definition of `iommu_paging_domain_alloc_flags'; arch/x86/kvm/../../../virt/kvm/vfio.o:include/linux/iommu.h:1085: first defined here

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux.git core
head:   a33bf8d8ce7e06bf0f033865b0cea5887cd2ac8c
commit: 20858d4ebb423826b7a978d54cde195f51d87e20 [10/22] iommu: Introduce iommu_paging_domain_alloc_flags()
config: x86_64-randconfig-r064-20241029 (https://download.01.org/0day-ci/archive/20241030/202410300824.FoaIMuCP-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241030/202410300824.FoaIMuCP-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410300824.FoaIMuCP-lkp@intel.com/

Note: the iommu/core HEAD a33bf8d8ce7e06bf0f033865b0cea5887cd2ac8c builds fine.
      It only hurts bisectability.

All errors (new ones prefixed by >>):

   ld: arch/x86/kvm/x86.o: in function `iommu_paging_domain_alloc_flags':
>> include/linux/iommu.h:1085: multiple definition of `iommu_paging_domain_alloc_flags'; arch/x86/kvm/../../../virt/kvm/vfio.o:include/linux/iommu.h:1085: first defined here


vim +1085 include/linux/iommu.h

  1082	
  1083	struct iommu_domain *iommu_paging_domain_alloc_flags(struct device *dev,
  1084							     unsigned int flags)
> 1085	{
  1086		return ERR_PTR(-ENODEV);
  1087	}
  1088	

-- 
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https://github.com/intel/lkp-tests/wiki