MFC r273701, r274556

  By the time that pmap_init() runs, vm_phys_segs[] has been initialized.
  Obtaining the end of memory address from vm_phys_segs[] is a little
  easier than obtaining it from phys_avail[].

  Enable the use of VM_PHYSSEG_SPARSE on amd64 and i386, making it the
  default on i386 PAE.  (The use of VM_PHYSSEG_SPARSE on i386 PAE saves
  us some precious kernel virtual address space that would have been
  wasted on unused vm_page structures.)

1 files changed, 1 insertions, 0 deletions

diff --git a/sys/vm/vm_phys.h b/sys/vm/vm_phys.h
index f39943c..62fa0d4 100644
--- a/sys/vm/vm_phys.h
+++ b/sys/vm/vm_phys.h
@@ -69,6 +69,7 @@ extern int vm_phys_nsegs;
  * The following functions are only to be used by the virtual memory system.
  */
 void vm_phys_add_page(vm_paddr_t pa);
+void vm_phys_add_seg(vm_paddr_t start, vm_paddr_t end);
 vm_page_t vm_phys_alloc_contig(u_long npages, vm_paddr_t low, vm_paddr_t high,
     u_long alignment, vm_paddr_t boundary);
 vm_page_t vm_phys_alloc_freelist_pages(int flind, int pool, int order);