Add CLFLUSHOPT instruction wrappers.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week

diff --git a/sys/amd64/include/cpufunc.h b/sys/amd64/include/cpufunc.h
index c0c5b0a99a117c99f24c9fe08a1249443471be0d..f2961d6d9eac566b78f4c9d0e30723b2b3a971a4 100644 (file)
--- a/sys/amd64/include/cpufunc.h
+++ b/sys/amd64/include/cpufunc.h
@@ -106,6 +106,13 @@ clflush(u_long addr)
        __asm __volatile("clflush %0" : : "m" (*(char *)addr));
 }
 
+static __inline void
+clflushopt(u_long addr)
+{
+
+       __asm __volatile(".byte 0x66;clflush %0" : : "m" (*(char *)addr));
+}
+
 static __inline void
 clts(void)
 {

diff --git a/sys/i386/include/cpufunc.h b/sys/i386/include/cpufunc.h
index 3bc25d42116eac28af3681c47a4b514d552de8b1..ca7207d856632f7eb2110f1d5014d62711ff4e1c 100644 (file)
--- a/sys/i386/include/cpufunc.h
+++ b/sys/i386/include/cpufunc.h
@@ -85,6 +85,13 @@ clflush(u_long addr)
        __asm __volatile("clflush %0" : : "m" (*(char *)addr));
 }
 
+static __inline void
+clflushopt(u_long addr)
+{
+
+       __asm __volatile(".byte 66;clflush %0" : : "m" (*(char *)addr));
+}
+
 static __inline void
 clts(void)
 {