L3_FRAME
#define L3_TRUNC_BLOCK(x) ((x) & L3_FRAME)
#define PTP_FRAME_INITIALIZER { L1_FRAME, L2_FRAME, L3_FRAME, L4_FRAME }
#define L2_FRAME (L3_FRAME|L2_MASK)
#define L2_FRAME (L3_FRAME|L2_MASK)
#define L2_FRAME (L3_FRAME | L2_MASK)
#define pl3_i(VA) (((VA_SIGN_POS(VA)) & L3_FRAME) >> L3_SHIFT)