arm64: Handle 1GB mappings in pmap_enter_quick_locked()

[alc]

sys/arm64/arm64/pmap.c

4598–4611

I wish we had pmap_X_to_X+1() variants that returned the PTE value rather than its address so that we didn't repeatedly pmap_load() afterwards.

[markj]

sys/arm64/arm64/pmap.c

4598–4611

Maybe something following this example?

pd_entry_t
pmap_l1e_to_l2e(pdp_entry_t l1e, vm_offset_t va)
{
    pd_entry_t *l2;

    l2 = (pd_entry_t *)PHYS_TO_DMAP(l1e & ~ATTR_MASK);
    return (l2[pmap_l2_index(va)]);
}

On the other hand, I'm not really sure why the arm64 pmap uses pmap_load() to begin with.

[alc]

sys/arm64/arm64/pmap.c

4598–4611

Yes, something like that.