[ros-diffs] [tkreuzer] 44204: On amd64 the NextEntry member of MMPTE_LIST has 32 bits, but 36 would be required to cover the whole pte space. Therefore use MmSystemPtesStart[SystemPtePoolType] as base for the pfn linked list instead of MmSystemPteBase, which is set to PTE_BASE.

Author: tkreuzer
Date: Mon Nov 16 20:35:36 2009
New Revision: 44204

URL: http://svn.reactos.org/svn/reactos?rev=44204&view=rev
Log:
On amd64 the NextEntry member of MMPTE_LIST has 32 bits, but 36 would be required to cover the whole pte space. Therefore use MmSystemPtesStart[SystemPtePoolType] as base for the pfn linked list instead of MmSystemPteBase, which is set to PTE_BASE.

Modified:
    branches/ros-amd64-bringup/reactos/ntoskrnl/mm/ARM3/syspte.c

Modified: branches/ros-amd64-bringup/reactos/ntoskrnl/mm/ARM3/syspte.c
URL: http://svn.reactos.org/svn/reactos/branches/ros-amd64-bringup/reactos/ntoskr...
==============================================================================
--- branches/ros-amd64-bringup/reactos/ntoskrnl/mm/ARM3/syspte.c [iso-8859-1] (original)
+++ branches/ros-amd64-bringup/reactos/ntoskrnl/mm/ARM3/syspte.c [iso-8859-1] Mon Nov 16 20:35:36 2009
@@ -64,7 +64,8 @@
     // Now move to the first free system PTE cluster
     //
     PreviousPte = PointerPte;    
-    PointerPte = MmSystemPteBase + PointerPte->u.List.NextEntry;
+    PointerPte = MmSystemPtesStart[SystemPtePoolType] + 
+                 PointerPte->u.List.NextEntry;

//
     // Loop each cluster
@@ -152,7 +153,8 @@
         // Go to the next cluster
         //
         PreviousPte = PointerPte;
-        PointerPte = MmSystemPteBase + PointerPte->u.List.NextEntry;
+        PointerPte = MmSystemPtesStart[SystemPtePoolType] + 
+                     PointerPte->u.List.NextEntry;
         ASSERT(PointerPte > PreviousPte);
     }

@@ -214,7 +216,7 @@
     // Zero PTEs
     //
     RtlZeroMemory(StartingPte, NumberOfPtes * sizeof(MMPTE));
-    CurrentSize = (ULONG_PTR)(StartingPte - MmSystemPteBase);
+    CurrentSize = (ULONG_PTR)(StartingPte - MmSystemPtesStart[SystemPtePoolType]);

//
     // Acquire the system PTE lock
@@ -235,7 +237,8 @@
         //
         // Get the first real cluster of PTEs and check if it's ours
         //
-        PointerPte = MmSystemPteBase + CurrentPte->u.List.NextEntry;
+        PointerPte = MmSystemPtesStart[SystemPtePoolType] + 
+                     CurrentPte->u.List.NextEntry;
         if (CurrentSize < CurrentPte->u.List.NextEntry)
         {
             //
@@ -395,7 +398,7 @@
     StartingPte->u.List.NextEntry = ((ULONG)0xFFFFF);
     MmFirstFreeSystemPte[PoolType].u.Long = 0;
     MmFirstFreeSystemPte[PoolType].u.List.NextEntry = StartingPte -
-                                                      MmSystemPteBase;
+                                                      MmSystemPtesStart[PoolType];

//
     // The second entry stores the size of this PTE space