9600 LDT still not happy under KPTI

*** 19,29 ****
   * CDDL HEADER END
   */
  
  /*
   * Copyright (c) 1988, 2010, Oracle and/or its affiliates. All rights reserved.
!  * Copyright 2017 Joyent, Inc.
   */
  
  /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  /*        All Rights Reserved   */
  
--- 19,29 ----
   * CDDL HEADER END
   */
  
  /*
   * Copyright (c) 1988, 2010, Oracle and/or its affiliates. All rights reserved.
!  * Copyright 2018 Joyent, Inc.
   */
  
  /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  /*        All Rights Reserved   */
  
*** 299,309 ****
          /*
           * LDT support.
           */
          kmutex_t        p_ldtlock;      /* protects the following fields */
          user_desc_t     *p_ldt;         /* Pointer to private LDT */
!         system_desc_t   p_ldt_desc;     /* segment descriptor for private LDT */
          ushort_t        p_ldtlimit;     /* highest selector used */
  #endif
          size_t p_swrss;                 /* resident set size before last swap */
          struct aio      *p_aio;         /* pointer to async I/O struct */
          struct itimer   **p_itimer;     /* interval timers */
--- 299,310 ----
          /*
           * LDT support.
           */
          kmutex_t        p_ldtlock;      /* protects the following fields */
          user_desc_t     *p_ldt;         /* Pointer to private LDT */
!         uint64_t        p_unused1;      /* no longer used */
!         uint64_t        p_unused2;      /* no longer used */
          ushort_t        p_ldtlimit;     /* highest selector used */
  #endif
          size_t p_swrss;                 /* resident set size before last swap */
          struct aio      *p_aio;         /* pointer to async I/O struct */
          struct itimer   **p_itimer;     /* interval timers */