2564 	unsigned long vstart = (unsigned long)phys_to_virt(pstart);  in xen_create_contiguous_region()  local
2575 	memset((void *) vstart, 0, PAGE_SIZE << order);  in xen_create_contiguous_region()
2580 	xen_zap_pfn_range(vstart, order, in_frames, NULL);  in xen_create_contiguous_region()
2583 	out_frame = virt_to_pfn(vstart);  in xen_create_contiguous_region()
2590 		xen_remap_exchanged_ptes(vstart, order, NULL, out_frame);  in xen_create_contiguous_region()
2592 		xen_remap_exchanged_ptes(vstart, order, in_frames, 0);  in xen_create_contiguous_region()
2596 	*dma_handle = virt_to_machine(vstart).maddr;  in xen_create_contiguous_region()
2606 	unsigned long vstart;  in xen_destroy_contiguous_region()  local
2611 	vstart = (unsigned long)phys_to_virt(pstart);  in xen_destroy_contiguous_region()
2612 	memset((void *) vstart, 0, PAGE_SIZE << order);  in xen_destroy_contiguous_region()
2617 	in_frame = virt_to_mfn(vstart);  in xen_destroy_contiguous_region()
2620 	xen_zap_pfn_range(vstart, order, NULL, out_frames);  in xen_destroy_contiguous_region()
2628 		xen_remap_exchanged_ptes(vstart, order, out_frames, 0);  in xen_destroy_contiguous_region()
2630 		xen_remap_exchanged_ptes(vstart, order, NULL, in_frame);  in xen_destroy_contiguous_region()