svn commit: r239903 - in stable/8/sys: amd64/include i386/include

[Konstantin Belousov]

Author: kib
Date: Thu Aug 30 11:00:00 2012
New Revision: 239903
URL: http://svn.freebsd.org/changeset/base/239903

Log:
  MFC r238972:
  Add lfence().

Modified:
  stable/8/sys/amd64/include/cpufunc.h
  stable/8/sys/i386/include/cpufunc.h
Directory Properties:
  stable/8/sys/   (props changed)

Modified: stable/8/sys/amd64/include/cpufunc.h
==============================================================================
--- stable/8/sys/amd64/include/cpufunc.h	Thu Aug 30 10:38:41 2012	(r239902)
+++ stable/8/sys/amd64/include/cpufunc.h	Thu Aug 30 11:00:00 2012	(r239903)
@@ -274,6 +274,13 @@ outw(u_int port, u_short data)
 }
 
 static __inline void
+lfence(void)
+{
+
+	__asm __volatile("lfence" : : : "memory");
+}
+
+static __inline void
 mfence(void)
 {
 

Modified: stable/8/sys/i386/include/cpufunc.h
==============================================================================
--- stable/8/sys/i386/include/cpufunc.h	Thu Aug 30 10:38:41 2012	(r239902)
+++ stable/8/sys/i386/include/cpufunc.h	Thu Aug 30 11:00:00 2012	(r239903)
@@ -146,6 +146,13 @@ cpu_mwait(int extensions, int hints)
 }
 
 static __inline void
+lfence(void)
+{
+
+	__asm __volatile("lfence" : : : "memory");
+}
+
+static __inline void
 mfence(void)
 {