[jgunthorpe:iommu_pt_vtd 32/40] drivers/iommu/iommu-pages.h:129:45: warning: cast from pointer to integer of different size

[jgunthorpe:iommu_pt_vtd 32/40] drivers/iommu/iommu-pages.h:129:45: warning: cast from pointer to integer of different size

[kernel test robot]

tree:   https://github.com/jgunthorpe/linux iommu_pt_vtd
head:   282698ed3a69e2f70fd682b369cf39c972c0bb2b
commit: ad56432cfa24006650b9487a6d476854af83321b [32/40] iommu/pages: Add support for a incoherent IOMMU page walker
config: arc-allyesconfig (https://download.01.org/0day-ci/archive/20250610/202506101725.ZGOeUtos-lkp@intel.com/config)
compiler: arc-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250610/202506101725.ZGOeUtos-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/202506101725.ZGOeUtos-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from drivers/iommu/iommu-pages.c:6:
   drivers/iommu/iommu-pages.h: In function 'iommu_pages_flush_incoherent':
>> drivers/iommu/iommu-pages.h:129:45: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
     129 |         dma_sync_single_for_device(dma_dev, (dma_addr_t)virt + offset, len,
         |                                             ^
--
   In file included from drivers/iommu/iommufd/selftest.c:16:
   drivers/iommu/iommufd/../iommu-pages.h: In function 'iommu_pages_flush_incoherent':
>> drivers/iommu/iommufd/../iommu-pages.h:129:45: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
     129 |         dma_sync_single_for_device(dma_dev, (dma_addr_t)virt + offset, len,
         |                                             ^
--
   In file included from drivers/iommu/generic_pt/fmt/../iommu_pt.h:15,
                    from drivers/iommu/generic_pt/fmt/iommu_template.h:40,
                    from drivers/iommu/generic_pt/fmt/iommu_amdv1.c:15:
   drivers/iommu/generic_pt/fmt/../../iommu-pages.h: In function 'iommu_pages_flush_incoherent':
>> drivers/iommu/generic_pt/fmt/../../iommu-pages.h:129:45: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
     129 |         dma_sync_single_for_device(dma_dev, (dma_addr_t)virt + offset, len,
         |                                             ^


vim +129 drivers/iommu/iommu-pages.h

   124	
   125	static inline void iommu_pages_flush_incoherent(struct device *dma_dev,
   126							void *virt, size_t offset,
   127							size_t len)
   128	{
 > 129		dma_sync_single_for_device(dma_dev, (dma_addr_t)virt + offset, len,
   130					   DMA_TO_DEVICE);
   131	}
   132	void iommu_pages_stop_incoherent_list(struct iommu_pages_list *list,
   133	                                      struct device *dma_dev);
   134	#endif
   135	

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