DMAR_ROOT_R1_CTP_MASK
dmar_pte_store(&re->r1, DMAR_ROOT_R1_P | (DMAR_ROOT_R1_CTP_MASK &
root_table[bus].r1 & DMAR_ROOT_R1_CTP_MASK,
root_table[bus].r2 & DMAR_ROOT_R1_CTP_MASK,
DMAR_ROOT_R1_CTP_MASK);