[ros-diffs] [ros-arm-bringup] 34664: - Implement MmRawDeleteVirtualMapping. - RamdiskUnmapPages works now.

Author: ros-arm-bringup
Date: Tue Jul 22 02:11:33 2008
New Revision: 34664

URL: http://svn.reactos.org/svn/reactos?rev=34664&view=rev
Log:
- Implement MmRawDeleteVirtualMapping.
- RamdiskUnmapPages works now.


Modified:
    trunk/reactos/ntoskrnl/mm/arm/stubs.c

Modified: trunk/reactos/ntoskrnl/mm/arm/stubs.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/arm/stubs.c?re…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/arm/stubs.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/arm/stubs.c [iso-8859-1] Tue Jul 22 02:11:33 2008
@@ -226,10 +226,30 @@
 NTAPI
 MmRawDeleteVirtualMapping(IN PVOID Address)
 {
-    //
-    // TODO
-    //
-    UNIMPLEMENTED;
+    PMMPTE PointerPte, PointerPde;
+    
+    //
+    // Get the PDE
+    //
+    PointerPde = MiGetPdeAddress(Address);
+    if (PointerPde->u.Hard.L1.Fault.Type == FaultPte) return;
+
+    //
+    // Get the PTE
+    //
+    PointerPte = MiGetPteAddress(Address);
+    ASSERT(PointerPte->u.Hard.L2.Small.Type == SmallPte);
+    
+    //
+    // Destroy the PTE
+    //
+    PointerPte->u.Hard.AsUlong = 0;
+    ASSERT(PointerPte->u.Hard.L2.Fault.Type == FaultPte);
+    
+    //
+    // Flush the TLB
+    //
+    KiFlushSingleTb(TRUE, Address);
 }
 
 VOID