From 020f18ca0b641dab66f2cd585b42fc04c70bcd94 Mon Sep 17 00:00:00 2001
From: Hartmut Birr <osexpert@googlemail.com>
Date: Thu, 19 Aug 2004 21:51:06 +0000
Subject: [PATCH] - Set the pde's for the kernel stack at thread creation time
 and not at any task switch.

svn path=/trunk/; revision=10604
---
 reactos/ntoskrnl/ke/i386/tskswitch.S | 17 -----------------
 reactos/ntoskrnl/ke/kthread.c        |  4 +++-
 2 files changed, 3 insertions(+), 18 deletions(-)

diff --git a/reactos/ntoskrnl/ke/i386/tskswitch.S b/reactos/ntoskrnl/ke/i386/tskswitch.S
index 66a13ac47fa..aa4e61640b9 100644
--- a/reactos/ntoskrnl/ke/i386/tskswitch.S
+++ b/reactos/ntoskrnl/ke/i386/tskswitch.S
@@ -145,23 +145,6 @@ _Ki386ContextSwitch:
 	movl	KPROCESS_DIRECTORY_TABLE_BASE(%ebx), %eax
 	movl	%eax, %cr3
 
-	/*
-	 * Set up the PDE for the top of the new stack.
-	 */
-	movl	$0, %ebx
-.L2:	movl	%edi, %esi
-	shr	$22, %esi
-	movl	0xF03C0000(,%esi, 4), %eax
-	cmpl	$0, %eax
-	jne	.L1
-	movl	_MmGlobalKernelPageDirectory(,%esi, 4), %eax
-	movl	%eax, 0xF03C0000(,%esi, 4)
-.L1:
-	addl	$4096, %edi
-	incl	%ebx
-	cmp	$(MM_STACK_SIZE / 4096), %ebx
-	jl	.L2
-		
 	/*
 	 * FIXME: Restore floating point state
 	 */
diff --git a/reactos/ntoskrnl/ke/kthread.c b/reactos/ntoskrnl/ke/kthread.c
index 2c2a1566283..ba76399e039 100644
--- a/reactos/ntoskrnl/ke/kthread.c
+++ b/reactos/ntoskrnl/ke/kthread.c
@@ -16,7 +16,7 @@
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
-/* $Id: kthread.c,v 1.49 2004/08/15 16:39:05 chorns Exp $
+/* $Id: kthread.c,v 1.50 2004/08/19 21:51:06 hbirr Exp $
  *
  * FILE:            ntoskrnl/ke/kthread.c
  * PURPOSE:         Microkernel thread support
@@ -189,6 +189,8 @@ KeInitializeThread(PKPROCESS Process, PKTHREAD Thread, BOOLEAN First)
       Thread->KernelStack = (PVOID)&init_stack_top;
     }
   
+  MmUpdatePageDir((PEPROCESS)Process, (PVOID)Thread->StackLimit, MM_STACK_SIZE);
+
   /* 
    * The Native API function will initialize the TEB field later 
    */