svn commit: r204973 - releng/7.3/sys/amd64/amd64

[Ken Smith]

Author: kensmith
Date: Wed Mar 10 19:55:27 2010
New Revision: 204973
URL: http://svn.freebsd.org/changeset/base/204973

Log:
  Back out r203073 due to issues recently discovered with machine check
  hardware on some AMD processors that causes problems with running
  FreeBSD as a guest on some virtual machine monitors.  What is believed
  to be the correct fix has been committed but should receive more testing
  before it becomes part of a release.
  
  Submitted by:	alc
  Approved by:	re (kib)

Modified:
  releng/7.3/sys/amd64/amd64/pmap.c
Directory Properties:
  releng/7.3/sys/   (props changed)
  releng/7.3/sys/cddl/contrib/opensolaris/   (props changed)
  releng/7.3/sys/contrib/dev/acpica/   (props changed)
  releng/7.3/sys/contrib/pf/   (props changed)

Modified: releng/7.3/sys/amd64/amd64/pmap.c
==============================================================================
--- releng/7.3/sys/amd64/amd64/pmap.c	Wed Mar 10 19:50:52 2010	(r204972)
+++ releng/7.3/sys/amd64/amd64/pmap.c	Wed Mar 10 19:55:27 2010	(r204973)
@@ -180,7 +180,7 @@ pt_entry_t pg_nx;
 
 SYSCTL_NODE(_vm, OID_AUTO, pmap, CTLFLAG_RD, 0, "VM/pmap parameters");
 
-static int pg_ps_enabled = 1;
+static int pg_ps_enabled;
 SYSCTL_INT(_vm_pmap, OID_AUTO, pg_ps_enabled, CTLFLAG_RDTUN, &pg_ps_enabled, 0,
     "Are large page mappings enabled?");