Disable interrupt when changing IDTR register.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10046 6f19259b-4bc3-4df7-8a09-765794883524
2010-02-23 07:32:20 +00:00
parent f18f2882e9
commit 28b5f7c062
5 changed files with 20 additions and 5 deletions
--- a/MdePkg/Library/BaseLib/Ia32/WriteIdtr.c
+++ b/MdePkg/Library/BaseLib/Ia32/WriteIdtr.c
@@ -1,7 +1,7 @@
 /** @file
  AsmWriteIdtr function

-  Copyright (c) 2006 - 2008, Intel Corporation<BR>
+  Copyright (c) 2006 - 2010, Intel Corporation<BR>
  All rights reserved. This program and the accompanying materials
  are licensed and made available under the terms and conditions of the BSD License
  which accompanies this distribution.  The full text of the license may be found at
@@ -32,7 +32,10 @@ InternalX86WriteIdtr (
 {
  _asm {
    mov     eax, Idtr
+    pushfd
+    cli
    lidt    fword ptr [eax]
+    popfd
  }
 }