Re: [PATCH V1 6/9] iommufd: IOMMU_IOAS_MAP_FILE implementation

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

Hi Steve,

kernel test robot noticed the following build warnings:

[auto build test WARNING on akpm-mm/mm-everything]
[also build test WARNING on linus/master v6.11 next-20240916]
[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/Steve-Sistare/mm-gup-repin_folio_unhugely/20240914-210746
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/1726319158-283074-7-git-send-email-steven.sistare%40oracle.com
patch subject: [PATCH V1 6/9] iommufd: IOMMU_IOAS_MAP_FILE implementation
config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20240917/202409170940.No0O836I-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/20240917/202409170940.No0O836I-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/202409170940.No0O836I-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/iommu/iommufd/io_pagetable.c:458: warning: Function parameter or struct member 'ictx' not described in 'iopt_map_file_pages'
>> drivers/iommu/iommufd/io_pagetable.c:458: warning: Function parameter or struct member 'iopt' not described in 'iopt_map_file_pages'
>> drivers/iommu/iommufd/io_pagetable.c:458: warning: Function parameter or struct member 'iova' not described in 'iopt_map_file_pages'
>> drivers/iommu/iommufd/io_pagetable.c:458: warning: Function parameter or struct member 'file' not described in 'iopt_map_file_pages'
>> drivers/iommu/iommufd/io_pagetable.c:458: warning: Function parameter or struct member 'start' not described in 'iopt_map_file_pages'
>> drivers/iommu/iommufd/io_pagetable.c:458: warning: Function parameter or struct member 'length' not described in 'iopt_map_file_pages'
>> drivers/iommu/iommufd/io_pagetable.c:458: warning: Function parameter or struct member 'iommu_prot' not described in 'iopt_map_file_pages'
>> drivers/iommu/iommufd/io_pagetable.c:458: warning: Function parameter or struct member 'flags' not described in 'iopt_map_file_pages'

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for GET_FREE_REGION
   Depends on [n]: SPARSEMEM [=n]
   Selected by [m]:
   - RESOURCE_KUNIT_TEST [=m] && RUNTIME_TESTING_MENU [=y] && KUNIT [=m]


vim +458 drivers/iommu/iommufd/io_pagetable.c

   448	
   449	/**
   450	 * iopt_map_file_pages() - Like iopt_map_user_pages, but map @file starting
   451	 * at byte offset @start.
   452	 */
   453	int iopt_map_file_pages(struct iommufd_ctx *ictx, struct io_pagetable *iopt,
   454				unsigned long *iova,
   455				struct file *file, unsigned long start,
   456				unsigned long length, int iommu_prot,
   457				unsigned int flags)
 > 458	{
   459		struct iopt_pages *pages;
   460	
   461		pages = iopt_alloc_file_pages(file, start, length,
   462					      iommu_prot & IOMMU_WRITE);
   463		if (IS_ERR(pages))
   464			return PTR_ERR(pages);
   465		return iopt_map_common(ictx, iopt, pages, iova, length,
   466				       start - pages->start,
   467				       iommu_prot, flags);
   468	}
   469	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki