The
pmap_init ();
function initializes the
pmap(9)
sub-system.
It is called during system initialization by
vm_init (,);
to initialize any structures that the
system needs in order to map between physical and virtual memory.
The
pmap_init2 ();
function initializes a zone for the PV entries.
These are used to implement page sharing at the physical level.
A high water mark is set so that the system can recover from
excessive numbers of PV entries.
