svn commit: r197700 - in stable/8/sys: . amd64/amd64 amd64/include/xen cddl/contrib/opensolaris contrib/dev/acpica contrib/pf dev/xen/xenpci

[Alan Cox]

Author: alc
Date: Fri Oct  2 05:11:46 2009
New Revision: 197700
URL: http://svn.freebsd.org/changeset/base/197700

Log:
  MFC r197580
    Temporarily disable the use of 1GB page mappings by the direct map.
  
  Approved by:	re (kib)

Modified:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/amd64/pmap.c
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/xen/xenpci/   (props changed)

Modified: stable/8/sys/amd64/amd64/pmap.c
==============================================================================
--- stable/8/sys/amd64/amd64/pmap.c	Fri Oct  2 02:28:59 2009	(r197699)
+++ stable/8/sys/amd64/amd64/pmap.c	Fri Oct  2 05:11:46 2009	(r197700)
@@ -440,7 +440,7 @@ create_pagetables(vm_paddr_t *firstaddr)
 	if (ndmpdp < 4)		/* Minimum 4GB of dirmap */
 		ndmpdp = 4;
 	DMPDPphys = allocpages(firstaddr, NDMPML4E);
-	if ((amd_feature & AMDID_PAGE1GB) == 0)
+	if (TRUE || (amd_feature & AMDID_PAGE1GB) == 0)
 		DMPDphys = allocpages(firstaddr, ndmpdp);
 	dmaplimit = (vm_paddr_t)ndmpdp << PDPSHIFT;
 
@@ -474,7 +474,7 @@ create_pagetables(vm_paddr_t *firstaddr)
 
 	/* Now set up the direct map space using either 2MB or 1GB pages */
 	/* Preset PG_M and PG_A because demotion expects it */
-	if ((amd_feature & AMDID_PAGE1GB) == 0) {
+	if (TRUE || (amd_feature & AMDID_PAGE1GB) == 0) {
 		for (i = 0; i < NPDEPG * ndmpdp; i++) {
 			((pd_entry_t *)DMPDphys)[i] = (vm_paddr_t)i << PDRSHIFT;
 			((pd_entry_t *)DMPDphys)[i] |= PG_RW | PG_V | PG_PS |