42     pub fn iter_range(start: Self, end: Self) -> PhysPageFrameIter {  in iter_range()
43         return PhysPageFrameIter::new(start, end);  in iter_range()
52     end: PhysPageFrame,  field
56     pub fn new(start: PhysPageFrame, end: PhysPageFrame) -> Self {  in new()
59             end,  in new()
68         if unlikely(self.current == self.end) {  in next()
106     pub fn iter_range(start: Self, end: Self) -> VirtPageFrameIter {  in iter_range()
109             end,  in iter_range()
125     end: VirtPageFrame,  field
130     pub fn new(start: VirtPageFrame, end: VirtPageFrame) -> Self {  in new()
133             end,  in new()
142         if unlikely(self.current == self.end) {  in next()