11859 need swapgs mitigation
Reviewed by: Robert Mustacchi <rm@fingolfin.org>
Reviewed by: Dan McDonald <danmcd@joyent.com>
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: Robert Mustacchi <rm@fingolfin.org>

@@ -1,10 +1,10 @@
 /*
  * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 /*
- * Copyright 2018 Joyent, Inc.
+ * Copyright 2019 Joyent, Inc.
  */
 
 #ifndef _SYS_SEGMENTS_H
 #define _SYS_SEGMENTS_H
 

@@ -177,11 +177,10 @@
  */
 extern void __set_ds(selector_t);
 extern void __set_es(selector_t);
 extern void __set_fs(selector_t);
 extern void __set_gs(selector_t);
-extern void __swapgs(void);
 #endif  /* __amd64 */
 
 #if defined(__amd64)
 extern void load_segment_registers(selector_t, selector_t, selector_t,
     selector_t);        /* (alphabetical) */