HALF_SLICE_CHICKEN2
wa_mcr_masked_en(wal, HALF_SLICE_CHICKEN2, GEN8_ST_PO_DISABLE);
MMIO_DFH(HALF_SLICE_CHICKEN2, D_BDW_PLUS, F_MODE_MASK | F_CMD_ACCESS, NULL, NULL);
if (REG_EQUAL(reg, HALF_SLICE_CHICKEN2))
MMIO_D(HALF_SLICE_CHICKEN2);