Author: kib
Date: Wed Aug 1 17:24:53 2012
New Revision: 238972
URL: http://svn.freebsd.org/changeset/base/238972
Log:
Add lfence().
MFC after: 1 week
Modified:
head/sys/amd64/include/cpufunc.h
head/sys/i386/include/cpufunc.h
Modified: head/sys/amd64/include/cpufunc.h
==============================================================================
--- head/sys/amd64/include/cpufunc.h Wed Aug 1 16:32:44 2012
(r238971)
+++ head/sys/amd64/include/cpufunc.h Wed Aug 1 17:24:53 2012
(r238972)
@@ -290,6 +290,13 @@ popcntq(u_long mask)
}
static __inline void
+lfence(void)
+{
+
+ __asm __volatile("lfence" : : : "memory");
+}
+
+static __inline void
mfence(void)
{
Modified: head/sys/i386/include/cpufunc.h
==============================================================================
--- head/sys/i386/include/cpufunc.h Wed Aug 1 16:32:44 2012
(r238971)
+++ head/sys/i386/include/cpufunc.h Wed Aug 1 17:24:53 2012
(r238972)
@@ -155,6 +155,13 @@ cpu_mwait(u_long extensions, u_int hints
}
static __inline void
+lfence(void)
+{
+
+ __asm __volatile("lfence" : : : "memory");
+}
+
+static __inline void
mfence(void)
{
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