9210 remove KMDB branch debugging support
9211 ::crregs could do with cr2/cr3 support
9209 ::ttrace should be able to filter by thread
Reviewed by: Patrick Mooney <patrick.mooney@joyent.com>

*** 19,28 ****
--- 19,30 ----
   * CDDL HEADER END
   */
  /*
   * Copyright 2009 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).
*** 152,162 ****
          kdi->kdi_kmdb_enter = kmdb_enter;
          kdi->mkdi_activate = kdi_activate;
          kdi->mkdi_deactivate = kdi_deactivate;
          kdi->mkdi_idt_switch = kdi_idt_switch;
          kdi->mkdi_update_drreg = kdi_update_drreg;
-         kdi->mkdi_set_debug_msrs = kdi_set_debug_msrs;
          kdi->mkdi_get_userlimit = kdi_get_userlimit;
          kdi->mkdi_get_cpuinfo = kdi_get_cpuinfo;
          kdi->mkdi_stop_slaves = kdi_stop_slaves;
          kdi->mkdi_start_slaves = kdi_start_slaves;
          kdi->mkdi_slave_wait = kdi_slave_wait;
--- 154,163 ----