NBPD_L3
#define NBPD_L3 (1UL << L3_SHIFT) /* # bytes mapped by L3 ent (1G) */
#define NBPD_L3 (1UL << L3_SHIFT) /* # bytes mapped by L3 ent (1G) */
#define NBPD_L3 (1ULL << L3_SHIFT) /* # bytes mapped by L3 ent (1GB) */