UefiCpuPkg/PiSmmCpuDxeSmm: Add paging protection.

[mirror_edk2.git] / UefiCpuPkg / PiSmmCpuDxeSmm / X64 / SmiException.asm

diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmiException.asm b/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmiException.asm
index ab716450b71a624eeb0f742e224de472170e258b..f55ba723ff3878e698b43b157e6036999ffd6eec 100644 (file)
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmiException.asm
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmiException.asm
@@ -1,5 +1,5 @@
 ;------------------------------------------------------------------------------ ;\r
-; Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>\r
+; Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR>\r
 ; This program and the accompanying materials\r
 ; are licensed and made available under the terms and conditions of the BSD License\r
 ; which accompanies this distribution.  The full text of the license may be found at\r
@@ -144,27 +144,8 @@ gcSmiGdtr   LABEL   FWORD
     DQ      offset NullSeg\r
 \r
 gcSmiIdtr   LABEL   FWORD\r
-    DW      IDT_SIZE - 1\r
-    DQ      offset _SmiIDT\r
-\r
-    .data\r
-\r
-;\r
-; Here is the IDT. There are 32 (not 255) entries in it since only processor\r
-; generated exceptions will be handled.\r
-;\r
-_SmiIDT:\r
-REPEAT      32\r
-    DW      0                           ; Offset 0:15\r
-    DW      CODE_SEL                    ; Segment selector\r
-    DB      0                           ; Unused\r
-    DB      8eh                         ; Interrupt Gate, Present\r
-    DW      0                           ; Offset 16:31\r
-    DQ      0                           ; Offset 32:63\r
-            ENDM\r
-_SmiIDTEnd:\r
-\r
-IDT_SIZE = (offset _SmiIDTEnd - offset _SmiIDT)\r
+    DW      0\r
+    DQ      0\r
 \r
     .code\r
 \r
@@ -400,14 +381,4 @@ PageFaultIdtHandlerSmmProfile    PROC
     iretq\r
 PageFaultIdtHandlerSmmProfile ENDP\r
 \r
-InitializeIDTSmmStackGuard   PROC\r
-;\r
-; If SMM Stack Guard feature is enabled, set the IST field of\r
-; the interrupt gate for Page Fault Exception to be 1\r
-;\r
-    lea     rax, _SmiIDT + 14 * 16\r
-    mov     byte ptr [rax + 4], 1\r
-    ret\r
-InitializeIDTSmmStackGuard   ENDP\r
-\r
     END\r