2511 static void xen_zap_pfn_range(unsigned long vaddr, unsigned int order,  in xen_zap_pfn_range()  argument
2519 	for (i = 0; i < (1UL<<order); i++, vaddr += PAGE_SIZE) {  in xen_zap_pfn_range()
2539 static void xen_remap_exchanged_ptes(unsigned long vaddr, int order,  in xen_remap_exchanged_ptes()  argument
2548 	limit = 1u << order;  in xen_remap_exchanged_ptes()
2562 			if (order == 0)  in xen_remap_exchanged_ptes()
2622 int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order,  in xen_create_contiguous_region()  argument
2640 	if (unlikely(order > MAX_CONTIG_ORDER))  in xen_create_contiguous_region()
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()
2652 	success = xen_exchange_memory(1UL << order, 0, in_frames,  in xen_create_contiguous_region()
2653 				      1, order, &out_frame,  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()
2669 void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order)  in xen_destroy_contiguous_region()  argument
2679 	if (unlikely(order > MAX_CONTIG_ORDER))  in xen_destroy_contiguous_region()
2683 	memset((void *) vstart, 0, PAGE_SIZE << order);  in xen_destroy_contiguous_region()
2691 	xen_zap_pfn_range(vstart, order, NULL, out_frames);  in xen_destroy_contiguous_region()
2694 	success = xen_exchange_memory(1, order, &in_frame, 1UL << order,  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()