grant_handle_t
grant_handle_t xr_page_hdls[BLKIF_MAX_SEGMENTS_PER_REQUEST];
#define INVALID_GRANT_HANDLE ((grant_handle_t)-1)
grant_handle_t xnb_rx_ring_handle;
grant_handle_t xnb_tx_ring_handle;
#define INVALID_GRANT_HANDLE ((grant_handle_t)-1)
grant_handle_t handle;
grant_handle_t handle;
grant_handle_t handle;
grant_handle_t xr_grant_hdl;
grant_handle_t g_handle;