[dgorbachev] 40020: Trying to use r39938 variant again...

Author: dgorbachev
Date: Sun Mar 15 04:23:47 2009
New Revision: 40020

URL: http://svn.reactos.org/svn/reactos?rev=40020&view=rev
Log:
Trying to use r39938 variant again...

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

Modified: trunk/reactos/ntoskrnl/mm/hypermap.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/hypermap.c?rev…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/hypermap.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/hypermap.c [iso-8859-1] Sun Mar 15 04:23:47 2009
@@ -139,7 +139,6 @@
 {
     MMPTE TempPte;
     PMMPTE PointerPte;
-    PFN_NUMBER Offset;
     PVOID Address; 
 
     //
@@ -154,47 +153,24 @@
     TempPte.u.Hard.PageFrameNumber = Page;
 
     //
-    // Pick the first zeroing PTE
+    // Get the Zero PTE and its address
     //
-    PointerPte = MmFirstReservedZeroingPte;
+    PointerPte = MiAddressToPte(MI_ZERO_PTE);
+    Address = (PVOID)((ULONG_PTR)PointerPte << 10);
 
     //
-    // Now get the first free PTE
+    // Invalidate the old address
     //
-    Offset = PFN_FROM_PTE(PointerPte);
-    if (!Offset)
-    {
-        //
-        // Reset the PTEs
-        //
-        Offset = MI_ZEROING_PTES;
-        KeFlushProcessTb();
-    }
-
-    //
-    // Prepare the next PTE
-    //
-    PointerPte->u.Hard.PageFrameNumber = Offset - 1;
+    __invlpg(Address);
 
     //
     // Write the current PTE
     //
-    PointerPte += Offset;
+    TempPte.u.Hard.PageFrameNumber = Page;
     *PointerPte = TempPte;
 
     //
     // Return the address
     //
-    Address = (PVOID)((ULONG_PTR)PointerPte << 10);
     return Address;
 }
-
-VOID
-NTAPI
-MiUnmapPageInZeroSpace(IN PVOID Address)
-{
-    //
-    // Blow away the mapping
-    //
-    MiAddressToPte(Address)->u.Long = 0;
-}