vmtransfer_page_packet_header
(offsetof(struct vmtransfer_page_packet_header, ranges) + \
const struct vmtransfer_page_packet_header *vmxferpage_packet
= container_of(desc, const struct vmtransfer_page_packet_header, d);
if ((desc->offset8 << 3) < sizeof(struct vmtransfer_page_packet_header)) {