11787 Kernel needs to be built with retpolines
11788 Kernel needs to generally use RSB stuffing
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: John Levon <john.levon@joyent.com>

*** 19,32 ****
   * CDDL HEADER END
   */
  /*
   * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  #include <sys/asm_linkage.h>
  #include <sys/asm_misc.h>
  #include <sys/regset.h>
  #include <sys/psw.h>
  
--- 19,31 ----
   * CDDL HEADER END
   */
  /*
   * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
+  * Copyright 2019 Joyent, Inc.
   */
  
  #include <sys/asm_linkage.h>
  #include <sys/asm_misc.h>
  #include <sys/regset.h>
  #include <sys/psw.h>
  
*** 99,109 ****
  #if defined(__amd64)
  
          .globl  gethrtimef
          ENTRY_NP(get_hrtime)
          FAST_INTR_PUSH
!         call    *gethrtimef(%rip)
          movq    %rax, %rdx
          shrq    $32, %rdx                       /* high 32-bit in %edx */
          FAST_INTR_POP
          FAST_INTR_RETURN
          SET_SIZE(get_hrtime)
--- 98,109 ----
  #if defined(__amd64)
  
          .globl  gethrtimef
          ENTRY_NP(get_hrtime)
          FAST_INTR_PUSH
!         movq    gethrtimef(%rip), %rax
!         INDIRECT_CALL_REG(rax)
          movq    %rax, %rdx
          shrq    $32, %rdx                       /* high 32-bit in %edx */
          FAST_INTR_POP
          FAST_INTR_RETURN
          SET_SIZE(get_hrtime)
*** 125,135 ****
          .globl  gethrestimef
          ENTRY_NP(get_hrestime)
          FAST_INTR_PUSH
          subq    $TIMESPEC_SIZE, %rsp
          movq    %rsp, %rdi
!         call    *gethrestimef(%rip)
          movl    (%rsp), %eax
          movl    CLONGSIZE(%rsp), %edx
          addq    $TIMESPEC_SIZE, %rsp
          FAST_INTR_POP
          FAST_INTR_RETURN
--- 125,136 ----
          .globl  gethrestimef
          ENTRY_NP(get_hrestime)
          FAST_INTR_PUSH
          subq    $TIMESPEC_SIZE, %rsp
          movq    %rsp, %rdi
!         movq    gethrestimef(%rip), %rax
!         INDIRECT_CALL_REG(rax)
          movl    (%rsp), %eax
          movl    CLONGSIZE(%rsp), %edx
          addq    $TIMESPEC_SIZE, %rsp
          FAST_INTR_POP
          FAST_INTR_RETURN