8956 Implement KPTI
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: Robert Mustacchi <rm@joyent.com>

*** 19,32 ****
   * CDDL HEADER END
   */
  /*
   * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  /*
   * Kernel/Debugger Interface (KDI) routines.  Called during debugger under
   * various system states (boot, while running, while the debugger has control).
   * Functions intended for use while the debugger has control may not grab any
   * locks or perform any functions that assume the availability of other system
--- 19,32 ----
   * CDDL HEADER END
   */
  /*
   * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
+  *
+  * Copyright 2018 Joyent, Inc.
   */
  
  /*
   * Kernel/Debugger Interface (KDI) routines.  Called during debugger under
   * various system states (boot, while running, while the debugger has control).
   * Functions intended for use while the debugger has control may not grab any
   * locks or perform any functions that assume the availability of other system
*** 111,126 ****
                  panic("invalid debug register dr%d", reg);
                  /*NOTREACHED*/
          }
  }
  
- void
- kdi_flush_caches(void)
- {
-         reload_cr3();
- }
- 
  extern void kdi_slave_entry(void);
  
  void
  kdi_stop_slaves(int cpu, int doxc)
  {
--- 111,120 ----