I'd like to remove the following code segment from vm_machdep.c which
is shared by all of NetBSD ports.  Unfortunately I have no R4000
descenders at hand and no chance to check the removal is valid or not.
Can MIPS3 owers verify the ommision makes no harm or does matter? 

void
cpu_fork(p1, p2, stack, stacksize, func, arg)
        struct proc *p1, *p2;
        void *stack; 
        size_t stacksize;
        void (*func) __P((void *));
        void *arg;
{
	...
#ifdef MIPS3
        /* ? make sense ? */
        if (CPUISMIPS3)
                MachHitFlushDCache((vaddr_t)p2->p_addr, USPACE);
#endif
        ...

Tohru Nishimura