SA_CTRL_DP_LBP_W
prot->lbp_w = (dp_page->prot_bits & SA_CTRL_DP_LBP_W) ? 1 :0;
if (dp_changeable->prot_bits & SA_CTRL_DP_LBP_W) {
dp_page->prot_bits |= SA_CTRL_DP_LBP_W;
dp_page->prot_bits &= ~SA_CTRL_DP_LBP_W;