- Eliminate the pte object from the pmap. Instead, page table pages are

   allocated as "no object" pages.  Similar changes were made to the amd64
   and i386 pmap last year.  The primary reason being that maintaining
   a pte object leads to lock order violations.  A secondary reason being
   that the pte object is redundant, i.e., the page table itself can be
   used to lookup page table pages.  (Historical note: The pte object
   predates our ability to allocate "no object" pages.  Thus, the pte
   object was a necessary evil.)
 - Unconditionally check the vm object lock's status in vm_page_remove().
   Previously, this assertion could not be made on Alpha due to its use
   of a pte object.

1 files changed, 0 insertions, 2 deletions

diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c
index 3a62334..06599d5 100644
--- a/sys/vm/vm_page.c
+++ b/sys/vm/vm_page.c
@@ -594,9 +594,7 @@ vm_page_remove(vm_page_t m)
 	mtx_assert(&vm_page_queue_mtx, MA_OWNED);
 	if (m->object == NULL)
 		return;
-#ifndef	__alpha__
 	VM_OBJECT_LOCK_ASSERT(m->object, MA_OWNED);
-#endif
 	if ((m->flags & PG_BUSY) == 0) {
 		panic("vm_page_remove: page not busy");
 	}