memblock_region_reserved_end_pfn
res->end = __pfn_to_phys(memblock_region_reserved_end_pfn(region)) - 1;
res->end = __pfn_to_phys(memblock_region_reserved_end_pfn(region)) - 1;
res->end = __pfn_to_phys(memblock_region_reserved_end_pfn(region)) - 1;