OS-7125 Need mitigation of L1TF (CVE-2018-3646)
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>

*** 27,36 ****
--- 27,37 ----
   * All rights reserved.
   */
  /*
   * Copyright 2013 Nexenta Systems, Inc.  All rights reserved.
   * Copyright 2013 Pluribus Networks, Inc.
+  * Copyright 2018 Joyent, Inc.
   */
  
  #include <sys/processor.h>
  #include <sys/time.h>
  #include <sys/psm.h>
*** 64,73 ****
--- 65,75 ----
  #include <sys/dditypes.h>
  #include <sys/sunddi.h>
  #include <sys/x_call.h>
  #include <sys/reboot.h>
  #include <sys/apix.h>
+ #include <sys/ht.h>
  
  static int apix_get_avail_vector_oncpu(uint32_t, int, int);
  static apix_vector_t *apix_init_vector(processorid_t, uchar_t);
  static void apix_cleanup_vector(apix_vector_t *);
  static void apix_insert_av(apix_vector_t *, void *, avfunc, caddr_t, caddr_t,
*** 801,810 ****
--- 803,815 ----
          if (vecp->v_type == APIX_TYPE_FIXED && apic_level_intr[vecp->v_inum])
                  mem->av_flags |= AV_PENTRY_LEVEL;
  
          vecp->v_share++;
          vecp->v_pri = (ipl > vecp->v_pri) ? ipl : vecp->v_pri;
+ 
+         ht_intr_alloc_pil(vecp->v_pri);
+ 
          if (vecp->v_autovect == NULL) { /* Nothing on list - put it at head */
                  vecp->v_autovect = mem;
                  return;
          }