OS-8347 Update SmartOS to support illumos 13917

*** 22,32 ****
   * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  /*
!  * Copyright 2019 Joyent, Inc.
   */
  
  #include <sys/errno.h>
  #include <sys/systm.h>
  #include <sys/archsystm.h>
--- 22,32 ----
   * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  /*
!  * Copyright 2022 Joyent, Inc.
   */
  
  #include <sys/errno.h>
  #include <sys/systm.h>
  #include <sys/archsystm.h>
*** 55,67 ****
  #include <sys/sunddi.h>
  #include <sys/dlpi.h>
  #include <sys/sysmacros.h>
  
  /* Linux specific functions and definitions */
! static void lx_save(klwp_t *);
! static void lx_restore(klwp_t *);
  
  /*
   * Set the return code for the forked child, always zero
   */
  /*ARGSUSED*/
  void
--- 55,75 ----
  #include <sys/sunddi.h>
  #include <sys/dlpi.h>
  #include <sys/sysmacros.h>
  
  /* Linux specific functions and definitions */
! static void lx_save(void *);
! static void lx_restore(void *);
  
+ /* Context op template. */
+ static const struct ctxop_template lx_ctxop_template = {
+         .ct_rev         = CTXOP_TPL_REV,
+         .ct_save        = lx_save,
+         .ct_restore     = lx_restore,
+         .ct_exit        = lx_save,
+ };
+ 
  /*
   * Set the return code for the forked child, always zero
   */
  /*ARGSUSED*/
  void
*** 118,129 ****
           */
          lwpd->br_stack_mode = LX_STACK_MODE_PREINIT;
          lwpd->br_ntv_stack = 0;
          lwpd->br_ntv_stack_current = 0;
  
!         installctx(lwptot(lwp), lwp, lx_save, lx_restore, NULL, NULL, lx_save,
!             NULL, NULL);
  
          /*
           * clear out the tls array
           */
          bzero(lwpd->br_tls, sizeof (lwpd->br_tls));
--- 126,136 ----
           */
          lwpd->br_stack_mode = LX_STACK_MODE_PREINIT;
          lwpd->br_ntv_stack = 0;
          lwpd->br_ntv_stack_current = 0;
  
!         ctxop_install(lwptot(lwp), &lx_ctxop_template, lwp);
  
          /*
           * clear out the tls array
           */
          bzero(lwpd->br_tls, sizeof (lwpd->br_tls));
*** 344,355 ****
          /*
           * Remove our system call interposer.
           */
          lwp->lwp_brand_syscall = NULL;
  
!         (void) removectx(lwptot(lwp), lwp, lx_save, lx_restore, NULL, NULL,
!             lx_save, NULL);
          if (lwpd->br_pid != 0) {
                  lx_pid_rele(lwptoproc(lwp)->p_pid, lwptot(lwp)->t_tid);
          }
  
          /*
--- 351,366 ----
          /*
           * Remove our system call interposer.
           */
          lwp->lwp_brand_syscall = NULL;
  
!         /*
!          * If this process is being de-branded during an exec(),
!          * the LX ctxops may have already been removed, so the result
!          * from ctxop_remove is irrelevant.
!          */
!         (void) ctxop_remove(lwptot(lwp), &lx_ctxop_template, lwp);
          if (lwpd->br_pid != 0) {
                  lx_pid_rele(lwptoproc(lwp)->p_pid, lwptot(lwp)->t_tid);
          }
  
          /*
*** 496,507 ****
           * Having performed the lx pid assignement, the lpid reference is no
           * longer needed.  The underlying data will be freed during lx_freelwp.
           */
          lwpd->br_lpid = NULL;
  
!         installctx(lwptot(lwp), lwp, lx_save, lx_restore, NULL, NULL,
!             lx_save, NULL, NULL);
  
          /*
           * Install branded system call hooks for this LWP:
           */
          lwp->lwp_brand_syscall = lx_syscall_enter;
--- 507,517 ----
           * Having performed the lx pid assignement, the lpid reference is no
           * longer needed.  The underlying data will be freed during lx_freelwp.
           */
          lwpd->br_lpid = NULL;
  
!         ctxop_install(lwptot(lwp), &lx_ctxop_template, lwp);
  
          /*
           * Install branded system call hooks for this LWP:
           */
          lwp->lwp_brand_syscall = lx_syscall_enter;
*** 611,622 ****
  /*
   * When switching a Linux process off the CPU, clear its GDT entries.
   */
  /* ARGSUSED */
  static void
! lx_save(klwp_t *t)
  {
          int i;
  
  #if defined(__amd64)
          reset_sregs();
  #endif
--- 621,633 ----
  /*
   * When switching a Linux process off the CPU, clear its GDT entries.
   */
  /* ARGSUSED */
  static void
! lx_save(void *arg)
  {
+         klwp_t *t = (klwp_t *)arg;
          int i;
  
  #if defined(__amd64)
          reset_sregs();
  #endif
*** 631,642 ****
   * %fsbase via wrmsr(MSR_AMD_FSBASE) here. Instead, that should happen
   * automatically in update_sregs if we are executing in user-land. If this
   * is the case then pcb_rupdate should be set.
   */
  static void
! lx_restore(klwp_t *t)
  {
          struct lx_lwp_data *lwpd = lwptolxlwp(t);
          user_desc_t *tls;
          int i;
  
          ASSERT(lwpd);
--- 642,654 ----
   * %fsbase via wrmsr(MSR_AMD_FSBASE) here. Instead, that should happen
   * automatically in update_sregs if we are executing in user-land. If this
   * is the case then pcb_rupdate should be set.
   */
  static void
! lx_restore(void *arg)
  {
+         klwp_t *t = (klwp_t *)arg;
          struct lx_lwp_data *lwpd = lwptolxlwp(t);
          user_desc_t *tls;
          int i;
  
          ASSERT(lwpd);