We rst encounter a call to savu in the newproc function { the context is shown below:

savu(u.u_rsav);

rpp = p;

u.u_procp = rpp;

rip = up;

n = rip->p_size;

a1 = rip->p_addr;

rpp->p_size = n;

a2 = malloc(coremap, n);

Note that up refers to the \parent" process, while p refers to the new process being created.

Why is it so important that savu be called here, within the newproc function, and before the call

to malloc (and the subsequent initialization of the new process's user data area)? Explain.

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