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 (c) 2010, Intel Corporation.
! # Copyright 2017 Joyent, Inc.
  #
  #       This Makefile defines file modules in the directory uts/i86pc
  #       and its children. These are the source files which are i86pc
  #       "implementation architecture" dependent.
  #
--- 21,31 ----
  
  #
  # Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
  #
  # Copyright (c) 2010, Intel Corporation.
! # Copyright 2018 Joyent, Inc.
  #
  #       This Makefile defines file modules in the directory uts/i86pc
  #       and its children. These are the source files which are i86pc
  #       "implementation architecture" dependent.
  #
*** 73,83 ****
          i86_mmu.o               \
          ibft.o                  \
          instr_size.o            \
          intr.o                  \
          kboot_mmu.o             \
-         kdi_subr.o              \
          kdi_idt.o               \
          kdi_idthdl.o            \
          kdi_asm.o               \
          lgrpplat.o              \
          mach_kdi.o              \
--- 73,82 ----
*** 156,166 ****
  
  SPECIAL_OBJS_64 +=              \
          locore.o                \
          fast_trap_asm.o         \
          interrupt.o             \
!         syscall_asm_amd64.o
  
  SPECIAL_OBJS += $(SPECIAL_OBJS_$(CLASS))
  
  #
  # Objects that get compiled into the identity mapped PT_LOAD section of unix
--- 155,166 ----
  
  SPECIAL_OBJS_64 +=              \
          locore.o                \
          fast_trap_asm.o         \
          interrupt.o             \
!         syscall_asm_amd64.o     \
!         kpti_trampolines.o
  
  SPECIAL_OBJS += $(SPECIAL_OBJS_$(CLASS))
  
  #
  # Objects that get compiled into the identity mapped PT_LOAD section of unix
*** 265,276 ****
          mpcore.o                \
          sseblk.o                \
          swtch.o                 \
          syscall_asm.o           \
          syscall_asm_amd64.o     \
          cpr_wakecode.o
  
  CPR_IMPL_OBJS   = cpr_impl.o    cpr_wakecode.o
  
  $(KDI_ASSYM_DEPS:%=$(OBJS_DIR)/%):      $(DSF_DIR)/$(OBJS_DIR)/kdi_assym.h
- 
- ASSYM_DEPS += kdi_asm.o
--- 265,275 ----
          mpcore.o                \
          sseblk.o                \
          swtch.o                 \
          syscall_asm.o           \
          syscall_asm_amd64.o     \
+         kpti_trampolines.o      \
          cpr_wakecode.o
  
  CPR_IMPL_OBJS   = cpr_impl.o    cpr_wakecode.o
  
  $(KDI_ASSYM_DEPS:%=$(OBJS_DIR)/%):      $(DSF_DIR)/$(OBJS_DIR)/kdi_assym.h