[ros-diffs] [sir_richard] 48164: [NTOS]: Handle faults on user-mode addresses, from user-mode processes, if they are owned by ARM3, so they can be forwarded to the VAD fault handler.

Author: sir_richard
Date: Wed Jul 21 18:09:31 2010
New Revision: 48164

URL: http://svn.reactos.org/svn/reactos?rev=48164&view=rev
Log:
[NTOS]: Handle faults on user-mode addresses, from user-mode processes, if they are owned
by ARM3, so they can be forwarded to the VAD fault handler.

Modified:
    trunk/reactos/ntoskrnl/mm/mmfault.c

Modified: trunk/reactos/ntoskrnl/mm/mmfault.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/mmfault.c?rev=…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/mmfault.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/mmfault.c [iso-8859-1] Wed Jul 21 18:09:31 2010
@@ -284,6 +284,11 @@
      * can go away.
      */
     MemoryArea = MmLocateMemoryAreaByAddress(MmGetKernelAddressSpace(), Address);
+    if (!(MemoryArea) && (Address <= MM_HIGHEST_VAD_ADDRESS))
+    {
+        /* Could this be a VAD fault from user-mode? */
+        MemoryArea = MmLocateMemoryAreaByAddress(MmGetCurrentAddressSpace(), Address);
+    }
     if ((!(MemoryArea) && ((ULONG_PTR)Address >= (ULONG_PTR)MmPagedPoolStart))
||
         ((MemoryArea) && (MemoryArea->Type == MEMORY_AREA_OWNED_BY_ARM3)))
     {
@@ -292,7 +297,7 @@
         //
         DPRINT("ARM3 fault %p\n", MemoryArea);
         return MmArmAccessFault(StoreInstruction, Address, Mode, TrapInformation);
-    }   
+    }
 
     /* Keep same old ReactOS Behaviour */
     if (StoreInstruction)