XBB_MAX_RING_PAGES
__CONST_RING_SIZE(blkif, PAGE_SIZE * XBB_MAX_RING_PAGES)
struct gnttab_unmap_grant_ref ops[XBB_MAX_RING_PAGES];
struct gnttab_map_grant_ref gnts[XBB_MAX_RING_PAGES];
struct gnttab_unmap_grant_ref unmap[XBB_MAX_RING_PAGES];
if (xbb->ring_config.ring_pages > XBB_MAX_RING_PAGES) {
XBB_MAX_RING_PAGES);
grant_handle_t handle[XBB_MAX_RING_PAGES];
uint64_t bus_addr[XBB_MAX_RING_PAGES];
max_ring_page_order = flsl(XBB_MAX_RING_PAGES) - 1;
grant_ref_t ring_ref[XBB_MAX_RING_PAGES];