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

*** 21,31 ****
  
  /*
   * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
   * Copyright 2014 Nexenta Systems, Inc.  All rights reserved.
   * Copyright (c) 2014 by Delphix. All rights reserved.
!  * Copyright 2016 Joyent, Inc.
   */
  
  /*
   *  Copyright (c) 1990, 1991 UNIX System Laboratories, Inc.
   *  Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T
--- 21,31 ----
  
  /*
   * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
   * Copyright 2014 Nexenta Systems, Inc.  All rights reserved.
   * Copyright (c) 2014 by Delphix. All rights reserved.
!  * Copyright 2018 Joyent, Inc.
   */
  
  /*
   *  Copyright (c) 1990, 1991 UNIX System Laboratories, Inc.
   *  Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T
*** 434,464 ****
  
  #if defined(__lint)
  
  /* ARGSUSED */
  void
! mmu_tlbflush_entry(caddr_t m)
  {}
  
  #else   /* __lint */
  
! #if defined(__amd64)
! 
!         ENTRY(mmu_tlbflush_entry)
          invlpg  (%rdi)
          ret
!         SET_SIZE(mmu_tlbflush_entry)
  
- #elif defined(__i386)
- 
-         ENTRY(mmu_tlbflush_entry)
-         movl    4(%esp), %eax
-         invlpg  (%eax)
-         ret
-         SET_SIZE(mmu_tlbflush_entry)
- 
- #endif  /* __i386 */
  #endif  /* __lint */
  
  
  /*
   * Get/Set the value of various control registers
--- 434,453 ----
  
  #if defined(__lint)
  
  /* ARGSUSED */
  void
! mmu_invlpg(caddr_t m)
  {}
  
  #else   /* __lint */
  
!         ENTRY(mmu_invlpg)
          invlpg  (%rdi)
          ret
!         SET_SIZE(mmu_invlpg)
  
  #endif  /* __lint */
  
  
  /*
   * Get/Set the value of various control registers