cache_line_size
guc->db_cacheline += cache_line_size();
offset, guc->db_cacheline, cache_line_size());
u_int8_t cache_line_size; /* see 8.4 */
u_int8_t cache_line_size; /* see 8.4 */
u_int8_t cache_line_size; /* see 8.4 */