[sir_richard] 49193: [NTOS]: Complete the VAD-to-MAREA Synchronization hack by removing fake MAREAs that were added when inserting real VADs. To do this, we have to track the fake MAREA associated ...
18 Oct
2010
18 Oct
'10
1:10 p.m.
Author: sir_richard
Date: Mon Oct 18 13:10:54 2010
New Revision: 49193
URL: http://svn.reactos.org/svn/reactos?rev=49193&view=rev
Log:
[NTOS]: Complete the VAD-to-MAREA Synchronization hack by removing fake MAREAs that were
added when inserting real VADs. To do this, we have to track the fake MAREA associated
with a VAD, so we overload the FirstProtoTypePte field in the VAD, if this is NOT a
section VAD (which we don't use yet). We'll figure something out for section VADs
later.
[NTOS]: Now that VAD and MAREA views are synchronized, remove the VAD limit and let VADs
be created at any address. Also do not create an arbitrary 16MB VAD memory area anymore.
This basically now allows for as many PEB/TEBs as can fit in the address space, fixing the
recent known regression that limited the number of threads a process could have.
Modified:
trunk/reactos/ntoskrnl/mm/ARM3/miarm.h
trunk/reactos/ntoskrnl/mm/ARM3/procsup.c
trunk/reactos/ntoskrnl/mm/ARM3/vadnode.c
trunk/reactos/ntoskrnl/mm/ARM3/virtual.c
Modified: trunk/reactos/ntoskrnl/mm/ARM3/miarm.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/ARM3/miarm.h?r…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/ARM3/miarm.h [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/ARM3/miarm.h [iso-8859-1] Mon Oct 18 13:10:54 2010
@@ -45,9 +45,7 @@
#define MM_HIGHEST_VAD_ADDRESS \
(PVOID)((ULONG_PTR)MM_HIGHEST_USER_ADDRESS - (16 * PAGE_SIZE))
-
-/* The range 0x10000->0x7FEFFFFF is reserved for the ROSMM MAREA Allocator */
-#define MI_LOWEST_VAD_ADDRESS (PVOID)0x7FF00000
+#define MI_LOWEST_VAD_ADDRESS (PVOID)MM_LOWEST_USER_ADDRESS
#endif /* !_M_AMD64 */
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] Mon Oct 18 13:10:54 2010
@@ -29,14 +29,14 @@
NTSTATUS Status;
PMEMORY_AREA MemoryArea;
PHYSICAL_ADDRESS BoundaryAddressMultiple;
- PVOID AllocatedBase = (PVOID)MI_LOWEST_VAD_ADDRESS;
+ PVOID AllocatedBase = (PVOID)USER_SHARED_DATA;
BoundaryAddressMultiple.QuadPart = 0;
Status = MmCreateMemoryArea(&Process->Vm,
MEMORY_AREA_OWNED_BY_ARM3,
&AllocatedBase,
((ULONG_PTR)MM_HIGHEST_USER_ADDRESS - 1) -
- (ULONG_PTR)MI_LOWEST_VAD_ADDRESS,
+ (ULONG_PTR)USER_SHARED_DATA,
PAGE_READWRITE,
&MemoryArea,
TRUE,
@@ -141,6 +141,8 @@
Process->VadRoot.NodeHint = Vad;
Vad->ControlArea = NULL; // For Memory-Area hack
Vad->FirstPrototypePte = NULL;
+ DPRINT("VAD: %p\n", Vad);
+ DPRINT("Allocated PEB/TEB at: 0x%p for %16s\n", *Base,
Process->ImageFileName);
MiInsertNode(&Process->VadRoot, (PVOID)Vad, Parent, Result);
/* Release the working set */
@@ -150,7 +152,6 @@
KeReleaseGuardedMutex(&Process->AddressCreationLock);
/* Return the status */
- DPRINT("Allocated PEB/TEB at: 0x%p for %16s\n", *Base,
Process->ImageFileName);
return Status;
}
Modified: trunk/reactos/ntoskrnl/mm/ARM3/vadnode.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/ARM3/vadnode.c…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/ARM3/vadnode.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/ARM3/vadnode.c [iso-8859-1] Mon Oct 18 13:10:54 2010
@@ -100,35 +100,16 @@
{
/* Insert it into the tree */
RtlpInsertAvlTreeNode(Table, NewNode, Parent, Result);
-}
-
-VOID
-NTAPI
-MiInsertVad(IN PMMVAD Vad,
- IN PEPROCESS Process)
-{
- TABLE_SEARCH_RESULT Result;
- PMMADDRESS_NODE Parent = NULL;
-
- /* Validate the VAD and set it as the current hint */
- ASSERT(Vad->EndingVpn >= Vad->StartingVpn);
- Process->VadRoot.NodeHint = Vad;
-
- /* Find the parent VAD and where this child should be inserted */
- Result = RtlpFindAvlTableNodeOrParent(&Process->VadRoot,
(PVOID)Vad->StartingVpn, &Parent);
- ASSERT(Result != TableFoundNode);
- ASSERT((Parent != NULL) || (Result == TableEmptyTree));
-
- /* Do the actual insert operation */
- MiInsertNode(&Process->VadRoot, (PVOID)Vad, Parent, Result);
-
+
/* Now insert an ARM3 MEMORY_AREA for this node, unless the insert was already from
the MEMORY_AREA code */
+ PMMVAD Vad = (PMMVAD)NewNode;
if (Vad->u.VadFlags.Spare == 0)
{
NTSTATUS Status;
PMEMORY_AREA MemoryArea;
PHYSICAL_ADDRESS BoundaryAddressMultiple;
SIZE_T Size;
+ PEPROCESS Process = CONTAINING_RECORD(Table, EPROCESS, VadRoot);
PVOID AllocatedBase = (PVOID)(Vad->StartingVpn << PAGE_SHIFT);
BoundaryAddressMultiple.QuadPart = 0;
Size = ((Vad->EndingVpn + 1) - Vad->StartingVpn) << PAGE_SHIFT;
@@ -142,7 +123,41 @@
0,
BoundaryAddressMultiple);
ASSERT(NT_SUCCESS(Status));
- }
+
+ /* Check if this is VM VAD */
+ if (Vad->ControlArea == NULL)
+ {
+ /* We store the reactos MEMORY_AREA here */
+ DPRINT("Storing %p in %p\n", MemoryArea, Vad);
+ Vad->FirstPrototypePte = (PMMPTE)MemoryArea;
+ }
+ else
+ {
+ /* This is a section VAD, this code doesn't happen yet */
+ ASSERT(FALSE);
+ }
+ }
+}
+
+VOID
+NTAPI
+MiInsertVad(IN PMMVAD Vad,
+ IN PEPROCESS Process)
+{
+ TABLE_SEARCH_RESULT Result;
+ PMMADDRESS_NODE Parent = NULL;
+
+ /* Validate the VAD and set it as the current hint */
+ ASSERT(Vad->EndingVpn >= Vad->StartingVpn);
+ Process->VadRoot.NodeHint = Vad;
+
+ /* Find the parent VAD and where this child should be inserted */
+ Result = RtlpFindAvlTableNodeOrParent(&Process->VadRoot,
(PVOID)Vad->StartingVpn, &Parent);
+ ASSERT(Result != TableFoundNode);
+ ASSERT((Parent != NULL) || (Result == TableEmptyTree));
+
+ /* Do the actual insert operation */
+ MiInsertNode(&Process->VadRoot, (PVOID)Vad, Parent, Result);
}
VOID
@@ -162,6 +177,38 @@
/* Get a new hint, unless we're empty now, in which case nothing */
if (!Table->NumberGenericTableElements) Table->NodeHint = NULL;
else Table->NodeHint = Table->BalancedRoot.RightChild;
+ }
+
+ /* Free the node from ReactOS view as well */
+ PMMVAD Vad = (PMMVAD)Node;
+ if (Vad->u.VadFlags.Spare == 0)
+ {
+ PMEMORY_AREA MemoryArea;
+ PEPROCESS Process;
+
+ /* Check if this is VM VAD */
+ if (Vad->ControlArea == NULL)
+ {
+ /* We store the ReactOS MEMORY_AREA here */
+ MemoryArea = (PMEMORY_AREA)Vad->FirstPrototypePte;
+ if (MemoryArea)
+ {
+ /* Get the process */
+ Process = CONTAINING_RECORD(Table, EPROCESS, VadRoot);
+
+ /* We only create fake memory-areas for ARM3 VADs */
+ ASSERT(MemoryArea->Type == MEMORY_AREA_OWNED_BY_ARM3);
+ ASSERT(MemoryArea->Vad == NULL);
+
+ /* Free it */
+ MmFreeMemoryArea(&Process->Vm, MemoryArea, NULL, NULL);
+ }
+ }
+ else
+ {
+ /* This is a section VAD, this code doesn't happen yet */
+ ASSERT(FALSE);
+ }
}
}
Modified: trunk/reactos/ntoskrnl/mm/ARM3/virtual.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/ARM3/virtual.c…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/ARM3/virtual.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/ARM3/virtual.c [iso-8859-1] Mon Oct 18 13:10:54 2010
@@ -241,12 +241,12 @@
/* We usually only get a VAD when it's not a VM address */
if (Vad)
{
+ /* Get out if this is a fake VAD, RosMm will free the marea pages */
+ if (Vad->u.VadFlags.Spare == 1) return;
+
/* At process deletion, we may get a VAD, but it should be a VM VAD */
ASSERT(Vad->u.VadFlags.PrivateMemory);
- ASSERT(Vad->FirstPrototypePte == NULL);
-
- /* Get out if this is a fake VAD, RosMm will free the marea pages */
- if (Vad->u.VadFlags.Spare == 1) return;
+ //ASSERT(Vad->FirstPrototypePte == NULL); memory_area fuckers
}
/* In all cases, we don't support fork() yet */
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