Re: [PATCH] iommu/vt-d: Flush piotlb for SVM and Nested domain

[Yi Liu <yi.l.liu@intel.com>]

On 2025/12/8 23:50, kernel test robot wrote:
> Hi Yi,
> 
> kernel test robot noticed the following build errors:
> 
> [auto build test ERROR on linus/master]
> [also build test ERROR on v6.18 next-20251208]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Yi-Liu/iommu-vt-d-Flush-piotlb-for-SVM-and-Nested-domain/20251208-172359
> base:   linus/master
> patch link:    https://lore.kernel.org/r/20251208091907.74719-1-yi.l.liu%40intel.com
> patch subject: [PATCH] iommu/vt-d: Flush piotlb for SVM and Nested domain
> config: x86_64-defconfig (https://download.01.org/0day-ci/archive/20251208/202512082342.IdZjYepb-lkp@intel.com/config)
> compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251208/202512082342.IdZjYepb-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/202512082342.IdZjYepb-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
> 
>     ld: vmlinux.o: in function `dmar_domain_attach_device':
>>> iommu.c:(.text+0x70aa38): undefined reference to `intel_svm_domain_ops'
>     ld: vmlinux.o: in function `paging_domain_compatible':
>>> (.text+0x70ab8f): undefined reference to `intel_svm_domain_ops'
>     ld: vmlinux.o: in function `intel_iommu_set_dev_pasid':
>     iommu.c:(.text+0x70b487): undefined reference to `intel_svm_domain_ops'
>     ld: vmlinux.o: in function `cache_tag_flush_iotlb':
>>> cache.c:(.text+0x70e74a): undefined reference to `intel_svm_domain_ops'
>     ld: vmlinux.o: in function `cache_tag_flush_range_np':
>     (.text+0x70f2d3): undefined reference to `intel_svm_domain_ops'
> 

hmmm. this happens when CONFIG_INTEL_IOMMU_SVM is not Y. will fix it
thanks.