Function pmap_release

freebsd/mips/mips/pmap.c:1274–1289

* Release any resources held by the given physical map. * Called when a pmap initialized by pmap_pinit is being released. * Should only be called if the map contains no valid mappings. */

 * Should only be called if the map contains no valid mappings.
 */
void
pmap_release(pmap_t pmap)
{
	vm_offset_t ptdva;
	vm_page_t ptdpg;

	KASSERT(pmap->pm_stats.resident_count == 0,
	    ("pmap_release: pmap resident count %ld != 0",
	    pmap->pm_stats.resident_count));

	ptdva = (vm_offset_t)pmap->pm_segtab;
	ptdpg = PHYS_TO_VM_PAGE(MIPS_DIRECT_TO_PHYS(ptdva));

	vm_page_unwire_noq(ptdpg);
	vm_page_free_zero(ptdpg);
}

/*
 * grow the number of kernel page table entries, if needed