Re: NEWS5000 doesn't boot

[Tsubai Masanari <tsubai%iri.co.jp@localhost>]

>This should be resolved with the lastest mips_machdep.c.  I will
>double check the flushing path you describe, it may only actually
>be needed on writeback cache machines.

But why is the cache flush needed in setregs() and pmap_procwr() is
not enough?

in kern_exec.c:

        ...

        /* copy out the process's signal trapoline code */
        if (szsigcode) {
                if (copyout((char *)pack.ep_emul->e_sigcode,
                    p->p_sigacts->ps_sigcode = (char *)PS_STRINGS - szsigcode,
                    szsigcode)) {
#ifdef DEBUG
                        printf("execve: sig trampoline copyout failed\n");
#endif
                        goto exec_abort;
                }
#ifdef PMAP_NEED_PROCWR
                /* This is code. Let the pmap do what is needed. */
                pmap_procwr(p, (vaddr_t)p->p_sigacts->ps_sigcode, szsigcode);
#endif
        }