Migrate the thread stack management functions from the machine-dependent

to the machine-independent parts of the VM.  At the same time, this
introduces vm object locking for the non-i386 platforms.

Two details:

1. KSTACK_GUARD has been removed in favor of KSTACK_GUARD_PAGES.  The
different machine-dependent implementations used various combinations
of KSTACK_GUARD and KSTACK_GUARD_PAGES.  To disable guard page, set
KSTACK_GUARD_PAGES to 0.

2. Remove the (unnecessary) clearing of PG_ZERO in vm_thread_new.  In
5.x, (but not 4.x,) PG_ZERO can only be set if VM_ALLOC_ZERO is passed
to vm_page_alloc() or vm_page_grab().

1 files changed, 0 insertions, 4 deletions

diff --git a/sys/vm/pmap.h b/sys/vm/pmap.h
index 36ca187..4f93704 100644
--- a/sys/vm/pmap.h
+++ b/sys/vm/pmap.h
@@ -129,10 +129,6 @@ void		 pmap_zero_page_area(vm_page_t, int off, int size);
 void		 pmap_zero_page_idle(vm_page_t);
 void		 pmap_prefault(pmap_t, vm_offset_t, vm_map_entry_t);
 int		 pmap_mincore(pmap_t pmap, vm_offset_t addr);
-void		 pmap_new_thread(struct thread *td, int pages);
-void		 pmap_dispose_thread(struct thread *td);
-void		 pmap_swapout_thread(struct thread *td);
-void		 pmap_swapin_thread(struct thread *td);
 void		 pmap_activate(struct thread *td);
 vm_offset_t	 pmap_addr_hint(vm_object_t obj, vm_offset_t addr, vm_size_t size);
 void		*pmap_kenter_temporary(vm_offset_t pa, int i);