2629 	unsigned long vstart = (unsigned long)phys_to_virt(pstart);  in xen_create_contiguous_region()  local
2643 	memset((void *) vstart, 0, PAGE_SIZE << order);  in xen_create_contiguous_region()
2648 	xen_zap_pfn_range(vstart, order, in_frames, NULL);  in xen_create_contiguous_region()
2651 	out_frame = virt_to_pfn(vstart);  in xen_create_contiguous_region()
2658 		xen_remap_exchanged_ptes(vstart, order, NULL, out_frame);  in xen_create_contiguous_region()
2660 		xen_remap_exchanged_ptes(vstart, order, in_frames, 0);  in xen_create_contiguous_region()
2664 	*dma_handle = virt_to_machine(vstart).maddr;  in xen_create_contiguous_region()
2674 	unsigned long vstart;  in xen_destroy_contiguous_region()  local
2682 	vstart = (unsigned long)phys_to_virt(pstart);  in xen_destroy_contiguous_region()
2683 	memset((void *) vstart, 0, PAGE_SIZE << order);  in xen_destroy_contiguous_region()
2688 	in_frame = virt_to_mfn(vstart);  in xen_destroy_contiguous_region()
2691 	xen_zap_pfn_range(vstart, order, NULL, out_frames);  in xen_destroy_contiguous_region()
2699 		xen_remap_exchanged_ptes(vstart, order, out_frames, 0);  in xen_destroy_contiguous_region()
2701 		xen_remap_exchanged_ptes(vstart, order, NULL, in_frame);  in xen_destroy_contiguous_region()