[tkreuzer] 67796: [NTOSKRNL] Get rid of MiRosTakeOverSharedUserPage. We don't need it anymore, since the user page is manually handled in the page fault handler and since it's outside the VAD regio...

Author: tkreuzer
Date: Sun May 17 00:35:23 2015
New Revision: 67796

URL: http://svn.reactos.org/svn/reactos?rev=67796&view=rev
Log:
[NTOSKRNL]
Get rid of MiRosTakeOverSharedUserPage. We don't need it anymore, since the user page
is manually handled in the page fault handler and since it's outside the VAD region,
we don't need to block that range. Now there should be no memory areas left at all in
MmDeleteProcessAddressSpace.

Modified:
    trunk/reactos/ntoskrnl/mm/ARM3/procsup.c
    trunk/reactos/ntoskrnl/mm/marea.c

Modified: trunk/reactos/ntoskrnl/mm/ARM3/procsup.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/ARM3/procsup.c…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/ARM3/procsup.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/ARM3/procsup.c	[iso-8859-1] Sun May 17 00:35:23 2015
@@ -23,25 +23,6 @@
 SLIST_HEADER MmDeadStackSListHead;
 
 /* PRIVATE FUNCTIONS **********************************************************/
-
-VOID
-NTAPI
-MiRosTakeOverSharedUserPage(IN PEPROCESS Process)
-{
-    NTSTATUS Status;
-    PMEMORY_AREA MemoryArea;
-    PVOID AllocatedBase = (PVOID)MM_SHARED_USER_DATA_VA;
-
-    Status = MmCreateMemoryArea(&Process->Vm,
-                                MEMORY_AREA_OWNED_BY_ARM3,
-                                &AllocatedBase,
-                                PAGE_SIZE,
-                                PAGE_READWRITE,
-                                &MemoryArea,
-                                0,
-                                PAGE_SIZE);
-    ASSERT(NT_SUCCESS(Status));
-}
 
 NTSTATUS
 NTAPI
@@ -973,9 +954,6 @@
     /* Release PFN lock */
     KeReleaseQueuedSpinLock(LockQueuePfnLock, OldIrql);
 
-    /* Lock the VAD, ARM3-owned ranges away */
-    MiRosTakeOverSharedUserPage(Process);
-
     /* Check if there's a Section Object */
     if (SectionObject)
     {
@@ -1077,7 +1055,6 @@
 MmInitializeHandBuiltProcess2(IN PEPROCESS Process)
 {
     /* Lock the VAD, ARM3-owned ranges away */
-    MiRosTakeOverSharedUserPage(Process);
     return STATUS_SUCCESS;
 }
 

Modified: trunk/reactos/ntoskrnl/mm/marea.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/marea.c?rev=67…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/marea.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/marea.c	[iso-8859-1] Sun May 17 00:35:23 2015
@@ -1173,7 +1173,6 @@
 MmDeleteProcessAddressSpace(PEPROCESS Process)
 {
     PVOID Address;
-    PMEMORY_AREA MemoryArea;
 
     DPRINT("MmDeleteProcessAddressSpace(Process %p (%s))\n", Process,
            Process->ImageFileName);
@@ -1183,16 +1182,8 @@
 #endif
     MmLockAddressSpace(&Process->Vm);
 
-    while ((MemoryArea = (PMEMORY_AREA)Process->Vm.WorkingSetExpansionLinks.Flink) !=
NULL)
-    {
-        /* There should be nothing else left */
-        ASSERT(MemoryArea->Type == MEMORY_AREA_OWNED_BY_ARM3);
-
-        MmFreeMemoryArea(&Process->Vm,
-                         MemoryArea,
-                         NULL,
-                         NULL);
-    }
+    /* There should not be any memory areas left! */
+    ASSERT(Process->Vm.WorkingSetExpansionLinks.Flink == NULL);
 
 #if (_MI_PAGING_LEVELS == 2)
     {