nr_superpages    2266 drivers/iommu/intel-iommu.c 				unsigned long nr_superpages, end_pfn;
nr_superpages    2271 drivers/iommu/intel-iommu.c 				nr_superpages = sg_res / lvl_pages;
nr_superpages    2272 drivers/iommu/intel-iommu.c 				end_pfn = iov_pfn + nr_superpages * lvl_pages - 1;