PG_NX_IDX
[PG_NX_IDX] = 0, /* no support in EPT */
pmap->pmap_bits[PG_NX_IDX] = 0;
[PG_NX_IDX] = X86_PG_NX,
pmap_bits_default[PG_NX_IDX] = 0;
*kp = pmap_bits_default[PG_NX_IDX];
*kp |= pmap_bits_default[PG_NX_IDX];