MIPS3_PG_RO
#define MIPS3_PG_ROPAGE (MIPS3_PG_V | MIPS3_PG_RO | MIPS3_PG_CACHED)
#define mips_pg_ro_bit() (MIPS3_PG_RO)
return (MIPS3_PG_RO);
| ((prot & VM_PROT_WRITE) ? MIPS3_PG_D : MIPS3_PG_RO)
xpte &= ~(MIPS3_PG_WIRED|MIPS3_PG_RO);
? (MIPS3_PG_RO | MIPS3_PG_WIRED)