From caccb5cc8f64faf97d87a823affe0e39b36628c1 Mon Sep 17 00:00:00 2001
From: Stefan Ginsberg <stefanginsberg@gmail.com>
Date: Wed, 14 Oct 2015 20:42:18 +0000
Subject: [PATCH] [NTOS] Global pages may not have been enabled when
 KeFlushCurrentTb is first called, so don't enable them in there.

svn path=/trunk/; revision=69531
---
 reactos/ntoskrnl/ke/i386/cpu.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/reactos/ntoskrnl/ke/i386/cpu.c b/reactos/ntoskrnl/ke/i386/cpu.c
index 3d4ea82d9b8..ea582d8885b 100644
--- a/reactos/ntoskrnl/ke/i386/cpu.c
+++ b/reactos/ntoskrnl/ke/i386/cpu.c
@@ -891,15 +891,15 @@ KeFlushCurrentTb(VOID)
     {
         ULONG Cr4;
 
-        /* Disable PGE */
-        Cr4 = __readcr4() & ~CR4_PGE;
-        __writecr4(Cr4);
+        /* Disable PGE (Note: may not have been enabled yet) */
+        Cr4 = __readcr4();
+        __writecr4(Cr4 & ~CR4_PGE);
 
         /* Flush everything */
         __writecr3(__readcr3());
 
         /* Re-enable PGE */
-        __writecr4(Cr4 | CR4_PGE);
+        __writecr4(Cr4);
     }
     else
     {