Function pmap_zero_page

freebsd/amd64/amd64/pmap.c:7771–7777

* Zero the specified hardware page. */

 * Zero the specified hardware page.
 */
void
pmap_zero_page(vm_page_t m)
{
	vm_offset_t va = PHYS_TO_DMAP(VM_PAGE_TO_PHYS(m));

	pagezero((void *)va);
}

/*
 * Zero an an area within a single hardware page.  off and size must not