svn commit: r329171 - head/sys/amd64/amd64

[Jonathan T. Looney]

Author: jtl
Date: Mon Feb 12 17:27:50 2018
New Revision: 329171
URL: https://svnweb.freebsd.org/changeset/base/329171

Log:
  Mark the pages used for the initial page-table entries as wired. This
  makes them consistent with the way other page-table pages are allocated.
  It also provides the rest of the VM system a good clue that these pages
  are used.
  
  Reviewed by:	alc, kib, markj
  Sponsored by:	Netflix
  Differential Revision:	https://reviews.freebsd.org/D14269

Modified:
  head/sys/amd64/amd64/pmap.c

Modified: head/sys/amd64/amd64/pmap.c
==============================================================================
--- head/sys/amd64/amd64/pmap.c	Mon Feb 12 16:25:56 2018	(r329170)
+++ head/sys/amd64/amd64/pmap.c	Mon Feb 12 17:27:50 2018	(r329171)
@@ -1244,7 +1244,9 @@ pmap_init(void)
 		    ("pmap_init: page table page is out of range"));
 		mpte->pindex = pmap_pde_pindex(KERNBASE) + i;
 		mpte->phys_addr = KPTphys + (i << PAGE_SHIFT);
+		mpte->wire_count = 1;
 	}
+	atomic_add_int(&vm_cnt.v_wire_count, nkpt);
 
 	/*
 	 * If the kernel is running on a virtual machine, then it must assume