8 Apr
2021
8 Apr
'21
1:40 p.m.
https://git.reactos.org/?p=reactos.git;a=commitdiff;h=43378411fb258a02d3384…
commit 43378411fb258a02d3384acb3e301eb1774a119a
Author: Jérôme Gardou <jerome.gardou(a)reactos.org>
AuthorDate: Mon Mar 22 09:52:11 2021 +0100
Commit: Jérôme Gardou <zefklop(a)users.noreply.github.com>
CommitDate: Thu Apr 8 15:40:37 2021 +0200
[NTOS:MM] Rewrite arch-specifics of the legacy Mm
Properly handle PDE refcounting
Clean-up of the internal API
Enforce attaching to the process when modifying its memory layout, instead of
making circonvoluted mappings which always end up being broken.
---
ntoskrnl/include/internal/mm.h | 48 +--
ntoskrnl/mm/i386/page.c | 843 +++++++++++++++++++----------------------
ntoskrnl/mm/marea.c | 18 -
ntoskrnl/mm/rmap.c | 30 +-
ntoskrnl/mm/section.c | 17 +-
5 files changed, 429 insertions(+), 527 deletions(-)
diff --git a/ntoskrnl/include/internal/mm.h b/ntoskrnl/include/internal/mm.h
index 93c44e5bd05..d2cb0123bed 100644
--- a/ntoskrnl/include/internal/mm.h
+++ b/ntoskrnl/include/internal/mm.h
@@ -1034,8 +1034,7 @@ MmCreateVirtualMapping(
struct _EPROCESS* Process,
PVOID Address,
ULONG flProtect,
- PPFN_NUMBER Pages,
- ULONG PageCount
+ PFN_NUMBER Page
);
NTSTATUS
@@ -1044,8 +1043,7 @@ MmCreateVirtualMappingUnsafe(
struct _EPROCESS* Process,
PVOID Address,
ULONG flProtect,
- PPFN_NUMBER Pages,
- ULONG PageCount
+ PFN_NUMBER Page
);
ULONG
@@ -1080,13 +1078,6 @@ VOID
NTAPI
MmInitGlobalKernelPageDirectory(VOID);
-VOID
-NTAPI
-MmGetPageFileMapping(
- struct _EPROCESS *Process,
- PVOID Address,
- SWAPENTRY* SwapEntry);
-
VOID
NTAPI
MmDeletePageFileMapping(
@@ -1103,16 +1094,16 @@ MmCreatePageFileMapping(
SWAPENTRY SwapEntry
);
-BOOLEAN
+VOID
NTAPI
-MmIsPageSwapEntry(
- struct _EPROCESS *Process,
- PVOID Address
-);
+MmGetPageFileMapping(
+ PEPROCESS Process,
+ PVOID Address,
+ SWAPENTRY *SwapEntry);
-VOID
+BOOLEAN
NTAPI
-MmSetDirtyPage(
+MmIsPageSwapEntry(
struct _EPROCESS *Process,
PVOID Address
);
@@ -1156,6 +1147,12 @@ MmSetCleanPage(
PVOID Address
);
+VOID
+NTAPI
+MmSetDirtyBit(PEPROCESS Process, PVOID Address, BOOLEAN Bit);
+#define MmSetCleanPage(__P, __A) MmSetDirtyBit(__P, __A, FALSE)
+#define MmSetDirtyPage(__P, __A) MmSetDirtyBit(__P, __A, TRUE)
+
VOID
NTAPI
MmDeletePageTable(
@@ -1208,21 +1205,6 @@ MmDeleteVirtualMapping(
PPFN_NUMBER Page
);
-BOOLEAN
-NTAPI
-MmIsDirtyPage(
- struct _EPROCESS *Process,
- PVOID Address
-);
-
-VOID
-NTAPI
-MmClearPageAccessedBit(PEPROCESS Process, PVOID Address);
-
-BOOLEAN
-NTAPI
-MmIsPageAccessed(PEPROCESS Process, PVOID Address);
-
/* wset.c ********************************************************************/
NTSTATUS
diff --git a/ntoskrnl/mm/i386/page.c b/ntoskrnl/mm/i386/page.c
index e1aac494dcb..35b0921d0ae 100644
--- a/ntoskrnl/mm/i386/page.c
+++ b/ntoskrnl/mm/i386/page.c
@@ -134,17 +134,6 @@ ULONG MmProtectToValue[32] =
/* FUNCTIONS ***************************************************************/
-static BOOLEAN MmUnmapPageTable(PULONG Pt, KIRQL OldIrql);
-
-VOID
-MiFlushTlb(PULONG Pt, PVOID Address, KIRQL OldIrql)
-{
- if ((Pt && MmUnmapPageTable(Pt, OldIrql)) || Address >=
MmSystemRangeStart)
- {
- KeInvalidateTlbEntry(Address);
- }
-}
-
static ULONG
ProtectToPTE(ULONG flProtect)
{
@@ -191,120 +180,38 @@ NTAPI
MiFillSystemPageDirectory(IN PVOID Base,
IN SIZE_T NumberOfBytes);
-static PULONG
-MmGetPageTableForProcess(PEPROCESS Process, PVOID Address, BOOLEAN Create, PKIRQL
OldIrql)
+PFN_NUMBER
+NTAPI
+MmGetPfnForProcess(PEPROCESS Process,
+ PVOID Address)
{
- PFN_NUMBER Pfn;
- PULONG Pt;
- PMMPDE PointerPde;
-
- if (Address < MmSystemRangeStart)
- {
- /* We should have a process for user land addresses */
- ASSERT(Process != NULL);
+ PMMPTE PointerPte;
+ PFN_NUMBER Page;
- if(Process != PsGetCurrentProcess())
- {
- PMMPDE PdeBase;
- ULONG PdeOffset = MiGetPdeOffset(Address);
-
- ASSERT(!Create);
-
- PdeBase = MiMapPageInHyperSpace(PsGetCurrentProcess(),
-
PTE_TO_PFN(Process->Pcb.DirectoryTableBase[0]),
- OldIrql);
- if (PdeBase == NULL)
- {
- KeBugCheck(MEMORY_MANAGEMENT);
- }
- PointerPde = PdeBase + PdeOffset;
- if (PointerPde->u.Hard.Valid == 0)
- {
- MiUnmapPageInHyperSpace(PsGetCurrentProcess(), PdeBase, *OldIrql);
- return NULL;
- }
-
- Pfn = PointerPde->u.Hard.PageFrameNumber;
- MiUnmapPageInHyperSpace(PsGetCurrentProcess(), PdeBase, *OldIrql);
- Pt = MiMapPageInHyperSpace(PsGetCurrentProcess(), Pfn, OldIrql);
- if (Pt == NULL)
- {
- KeBugCheck(MEMORY_MANAGEMENT);
- }
- return Pt + MiAddressToPteOffset(Address);
- }
+ /* Must be called for user mode only */
+ ASSERT(Process != NULL);
+ ASSERT(Address < MmSystemRangeStart);
- /* This is for our process */
- PointerPde = MiAddressToPde(Address);
- Pt = (PULONG)MiAddressToPte(Address);
+ /* And for our process */
+ ASSERT(Process == PsGetCurrentProcess());
- if ((PointerPde->u.Hard.Valid == 0) && (Create == FALSE))
- {
- /* Do not fault PDE in if not needed */
- return NULL;
- }
+ /* Lock for reading */
+ MiLockProcessWorkingSetShared(Process, PsGetCurrentThread());
- return (PULONG)MiAddressToPte(Address);
- }
-
- /* This is for kernel land address */
- ASSERT(Process == NULL);
- PointerPde = MiAddressToPde(Address);
- Pt = (PULONG)MiAddressToPte(Address);
- if (PointerPde->u.Hard.Valid == 0)
+ if (MiQueryPageTableReferences(Address) == 0)
{
- /* Let ARM3 synchronize the PDE */
- if(!MiSynchronizeSystemPde(PointerPde))
- {
- /* PDE (still) not valid, let ARM3 allocate one if asked */
- if(Create == FALSE)
- return NULL;
- MiFillSystemPageDirectory(Address, PAGE_SIZE);
- }
- }
- return Pt;
-}
-
-static BOOLEAN MmUnmapPageTable(PULONG Pt, KIRQL OldIrql)
-{
- if (!IS_HYPERSPACE(Pt))
- {
- return TRUE;
+ MiUnlockProcessWorkingSetShared(Process, PsGetCurrentThread());
+ return 0;
}
- MiUnmapPageInHyperSpace(PsGetCurrentProcess(), Pt, OldIrql);
-
- return FALSE;
-}
-
-static ULONG MmGetPageEntryForProcess(PEPROCESS Process, PVOID Address)
-{
- ULONG Pte;
- PULONG Pt;
- KIRQL OldIrql;
+ /* Make sure we can read the PTE */
+ MiMakePdeExistAndMakeValid(MiAddressToPde(Address), Process, MM_NOIRQL);
- Pt = MmGetPageTableForProcess(Process, Address, FALSE, &OldIrql);
- if (Pt)
- {
- Pte = *Pt;
- MmUnmapPageTable(Pt, OldIrql);
- return Pte;
- }
- return 0;
-}
+ PointerPte = MiAddressToPte(Address);
+ Page = PointerPte->u.Hard.Valid ? PFN_FROM_PTE(PointerPte) : 0;
-PFN_NUMBER
-NTAPI
-MmGetPfnForProcess(PEPROCESS Process,
- PVOID Address)
-{
- ULONG Entry;
- Entry = MmGetPageEntryForProcess(Process, Address);
- if (!(Entry & PA_PRESENT))
- {
- return 0;
- }
- return(PTE_TO_PFN(Entry));
+ MiUnlockProcessWorkingSetShared(Process, PsGetCurrentThread());
+ return Page;
}
VOID
@@ -315,130 +222,150 @@ MmDeleteVirtualMapping(PEPROCESS Process, PVOID Address,
* FUNCTION: Delete a virtual mapping
*/
{
- BOOLEAN WasValid = FALSE;
- PFN_NUMBER Pfn;
+ PMMPTE PointerPte;
ULONG Pte;
- PULONG Pt;
- KIRQL OldIrql;
- DPRINT("MmDeleteVirtualMapping(%p, %p, %p, %p)\n",
- Process, Address, WasDirty, Page);
+ DPRINT("MmDeleteVirtualMapping(%p, %p, %p, %p)\n", Process, Address,
WasDirty, Page);
+
+ ASSERT(((ULONG_PTR)Address % PAGE_SIZE) == 0);
- Pt = MmGetPageTableForProcess(Process, Address, FALSE, &OldIrql);
+ /* And we should be at low IRQL */
+ ASSERT(KeGetCurrentIrql() < DISPATCH_LEVEL);
- if (Pt == NULL)
+ /* Make sure our PDE is valid, and that everything is going fine */
+ if (Process == NULL)
{
- if (WasDirty != NULL)
+ if (Address < MmSystemRangeStart)
{
- *WasDirty = FALSE;
+ DPRINT1("NULL process given for user-mode mapping at %p\n",
Address);
+ KeBugCheck(MEMORY_MANAGEMENT);
}
- if (Page != NULL)
+
+ if (!MiSynchronizeSystemPde(MiAddressToPde(Address)))
{
- *Page = 0;
+ /* There can't be a page if there is no PDE */
+ if (WasDirty)
+ *WasDirty = FALSE;
+ if (Page)
+ *Page = 0;
+ return;
}
- return;
}
-
- /*
- * Atomically set the entry to zero and get the old value.
- */
- Pte = InterlockedExchangePte(Pt, 0);
-
- /* We count a mapping as valid if it's a present page, or it's a nonzero pfn
with
- * the swap bit unset, indicating a valid page protected to PAGE_NOACCESS. */
- WasValid = (Pte & PA_PRESENT) || ((Pte >> PAGE_SHIFT) && !(Pte
& 0x800));
- if (WasValid)
+ else
{
- /* Flush the TLB since we transitioned this PTE
- * from valid to invalid so any stale translations
- * are removed from the cache */
- MiFlushTlb(Pt, Address, OldIrql);
+ if ((Address >= MmSystemRangeStart) || Add2Ptr(Address, PAGE_SIZE) >=
MmSystemRangeStart)
+ {
+ DPRINT1("Process %p given for kernel-mode mapping at %p -- %lu pages
starting at %Ix\n", Process, Address);
+ KeBugCheck(MEMORY_MANAGEMENT);
+ }
- if (Address < MmSystemRangeStart)
- {
- /* Remove PDE reference */
- Process->Vm.VmWorkingSetList->UsedPageTableEntries[MiGetPdeOffset(Address)]--;
- ASSERT(Process->Vm.VmWorkingSetList->UsedPageTableEntries[MiGetPdeOffset(Address)]
< PTE_PER_PAGE);
- }
+ /* Only for current process !!! */
+ ASSERT(Process = PsGetCurrentProcess());
+ MiLockProcessWorkingSetUnsafe(Process, PsGetCurrentThread());
- Pfn = PTE_TO_PFN(Pte);
- }
- else
- {
- MmUnmapPageTable(Pt, OldIrql);
- Pfn = 0;
+ /* No PDE --> No page */
+ if (MiQueryPageTableReferences(Address) == 0)
+ {
+ MiUnlockProcessWorkingSetUnsafe(Process, PsGetCurrentThread());
+ if (WasDirty)
+ *WasDirty = 0;
+ if (Page)
+ *Page = 0;
+ return;
+ }
+
+ MiMakePdeExistAndMakeValid(MiAddressToPde(Address), Process, MM_NOIRQL);
}
- /*
- * Return some information to the caller
- */
- if (WasDirty != NULL)
+ PointerPte = MiAddressToPte(Address);
+ Pte = InterlockedExchangePte(PointerPte, 0);
+
+ if (Pte == 0)
{
- *WasDirty = ((Pte & PA_DIRTY) && (Pte & PA_PRESENT)) ? TRUE :
FALSE;
+ /* There was nothing here */
+ if (Address < MmSystemRangeStart)
+ MiUnlockProcessWorkingSetUnsafe(Process, PsGetCurrentThread());
+ if (WasDirty)
+ *WasDirty = 0;
+ if (Page)
+ *Page = 0;
+ return;
}
- if (Page != NULL)
+
+ /* It must have been present, or not a swap entry */
+ ASSERT(FlagOn(Pte, PA_PRESENT) || !FlagOn(Pte, 0x800));
+
+ if (FlagOn(Pte, PA_PRESENT))
+ KeInvalidateTlbEntry(Address);
+
+ if (Address < MmSystemRangeStart)
{
- *Page = Pfn;
+ /* Remove PDE reference */
+ MiDecrementPageTableReferences(Address);
+ if (MiQueryPageTableReferences(Address) == 0)
+ {
+ KIRQL OldIrql = MiAcquirePfnLock();
+ MiDeletePte(MiAddressToPte(PointerPte), PointerPte, Process, NULL);
+ MiReleasePfnLock(OldIrql);
+ }
+
+ MiUnlockProcessWorkingSetUnsafe(Process, PsGetCurrentThread());
}
-}
-VOID
-NTAPI
-MmGetPageFileMapping(PEPROCESS Process, PVOID Address,
- SWAPENTRY* SwapEntry)
-/*
- * FUNCTION: Get a page file mapping
- */
-{
- ULONG Entry = MmGetPageEntryForProcess(Process, Address);
- *SwapEntry = Entry >> 1;
+ if (WasDirty)
+ *WasDirty = FlagOn(Pte, PA_DIRTY);
+ if (Page)
+ *Page = PTE_TO_PFN(Pte);
}
+
VOID
NTAPI
-MmDeletePageFileMapping(PEPROCESS Process, PVOID Address,
- SWAPENTRY* SwapEntry)
-/*
- * FUNCTION: Delete a virtual mapping
- */
+MmDeletePageFileMapping(
+ PEPROCESS Process,
+ PVOID Address,
+ SWAPENTRY* SwapEntry)
{
+ PMMPTE PointerPte;
ULONG Pte;
- PULONG Pt;
- KIRQL OldIrql;
- Pt = MmGetPageTableForProcess(Process, Address, FALSE, &OldIrql);
+ /* This should not be called for kernel space anymore */
+ ASSERT(Process != NULL);
+ ASSERT(Address < MmSystemRangeStart);
- if (Pt == NULL)
- {
- *SwapEntry = 0;
- return;
- }
+ /* And we don't support deleting for other process */
+ ASSERT(Process == PsGetCurrentProcess());
- /*
- * Atomically set the entry to zero and get the old value.
- */
- Pte = InterlockedExchangePte(Pt, 0);
+ /* And we should be at low IRQL */
+ ASSERT(KeGetCurrentIrql() < DISPATCH_LEVEL);
- if (Address < MmSystemRangeStart)
- {
- /* Remove PDE reference */
- Process->Vm.VmWorkingSetList->UsedPageTableEntries[MiGetPdeOffset(Address)]--;
- ASSERT(Process->Vm.VmWorkingSetList->UsedPageTableEntries[MiGetPdeOffset(Address)]
< PTE_PER_PAGE);
- }
+ /* We are tinkering with the PDE here. Ensure it will be there */
+ MiLockProcessWorkingSetUnsafe(Process, PsGetCurrentThread());
- /* We don't need to flush here because page file entries
- * are invalid translations, so the processor won't cache them */
- MmUnmapPageTable(Pt, OldIrql);
+ /* Callers must ensure there is actually something there */
+ ASSERT(MiAddressToPde(Address)->u.Long != 0);
- if ((Pte & PA_PRESENT) || !(Pte & 0x800))
+ MiMakePdeExistAndMakeValid(MiAddressToPde(Address), Process, MM_NOIRQL);
+
+ PointerPte = MiAddressToPte(Address);
+ Pte = InterlockedExchangePte(PointerPte, 0);
+ if (!FlagOn(Pte, 0x800) || FlagOn(Pte, PA_PRESENT))
{
- DPRINT1("Pte %x (want not 1 and 0x800)\n", Pte);
- KeBugCheck(MEMORY_MANAGEMENT);
+ KeBugCheckEx(MEMORY_MANAGEMENT, Pte, (ULONG_PTR)Process, (ULONG_PTR)Address, 0);
}
- /*
- * Return some information to the caller
- */
+ /* This used to be a non-zero PTE, now we can let the PDE go. */
+ MiDecrementPageTableReferences(Address);
+ if (MiQueryPageTableReferences(Address) == 0)
+ {
+ /* We can let it go */
+ KIRQL OldIrql = MiAcquirePfnLock();
+ MiDeletePte(MiAddressToPte(PointerPte), PointerPte, Process, NULL);
+ MiReleasePfnLock(OldIrql);
+ }
+
+ MiUnlockProcessWorkingSetUnsafe(Process, PsGetCurrentThread());
+
*SwapEntry = Pte >> 1;
}
@@ -459,149 +386,160 @@ Mmi386MakeKernelPageTableGlobal(PVOID Address)
BOOLEAN
NTAPI
-MmIsDirtyPage(PEPROCESS Process, PVOID Address)
+MmIsPagePresent(PEPROCESS Process, PVOID Address)
{
- return MmGetPageEntryForProcess(Process, Address) & PA_DIRTY ? TRUE : FALSE;
-}
+ BOOLEAN Ret;
-VOID
-NTAPI
-MmSetCleanPage(PEPROCESS Process, PVOID Address)
-{
- PULONG Pt;
- ULONG Pte;
- KIRQL OldIrql;
-
- if (Address < MmSystemRangeStart && Process == NULL)
+ if (Address >= MmSystemRangeStart)
{
- DPRINT1("MmSetCleanPage is called for user space without a
process.\n");
- KeBugCheck(MEMORY_MANAGEMENT);
- }
+ ASSERT(Process == NULL);
+ if (!MiSynchronizeSystemPde(MiAddressToPde(Address)))
+ {
+ /* It can't be present if there is no PDE */
+ return FALSE;
+ }
- Pt = MmGetPageTableForProcess(Process, Address, FALSE, &OldIrql);
- if (Pt == NULL)
- {
- KeBugCheck(MEMORY_MANAGEMENT);
+ return MiAddressToPte(Address)->u.Hard.Valid;
}
- do
- {
- Pte = *Pt;
- } while (Pte != InterlockedCompareExchangePte(Pt, Pte & ~PA_DIRTY, Pte));
+ ASSERT(Process != NULL);
+ ASSERT(Process == PsGetCurrentProcess());
- if (!(Pte & PA_PRESENT))
+ MiLockProcessWorkingSetShared(Process, PsGetCurrentThread());
+
+ if (MiQueryPageTableReferences(Address) == 0)
{
- KeBugCheck(MEMORY_MANAGEMENT);
+ /* It can't be present if there is no PDE */
+ MiUnlockProcessWorkingSetShared(Process, PsGetCurrentThread());
+ return FALSE;
}
- else if (Pte & PA_DIRTY)
+
+ MiMakePdeExistAndMakeValid(MiAddressToPde(Address), Process, MM_NOIRQL);
+
+ Ret = MiAddressToPte(Address)->u.Hard.Valid;
+
+ MiUnlockProcessWorkingSetShared(Process, PsGetCurrentThread());
+
+ return Ret;
+}
+
+BOOLEAN
+NTAPI
+MmIsDisabledPage(PEPROCESS Process, PVOID Address)
+{
+ BOOLEAN Ret;
+ ULONG Pte;
+
+ if (Address >= MmSystemRangeStart)
{
- MiFlushTlb(Pt, Address, OldIrql);
+ ASSERT(Process == NULL);
+ if (!MiSynchronizeSystemPde(MiAddressToPde(Address)))
+ {
+ /* It's not disabled if it's not present */
+ return FALSE;
+ }
+
+ Pte = MiAddressToPte(Address)->u.Long;
}
else
{
- MmUnmapPageTable(Pt, OldIrql);
+ ASSERT(Process != NULL);
+ ASSERT(Process == PsGetCurrentProcess());
+
+ MiLockProcessWorkingSetShared(Process, PsGetCurrentThread());
+
+ if (MiQueryPageTableReferences(Address) == 0)
+ {
+ /* It can't be disabled if there is no PDE */
+ MiUnlockProcessWorkingSetShared(Process, PsGetCurrentThread());
+ return FALSE;
+ }
+
+ MiMakePdeExistAndMakeValid(MiAddressToPde(Address), Process, MM_NOIRQL);
+
+ Pte = MiAddressToPte(Address)->u.Long;
}
+
+ Ret = !FlagOn(Pte, PA_PRESENT) && !FlagOn(Pte, 0x800) &&
(PAGE_MASK(Pte) != 0);
+
+ if (Address < MmSystemRangeStart)
+ MiUnlockProcessWorkingSetShared(Process, PsGetCurrentThread());
+
+ return Ret;
}
-VOID
+BOOLEAN
NTAPI
-MmSetDirtyPage(PEPROCESS Process, PVOID Address)
+MmIsPageSwapEntry(PEPROCESS Process, PVOID Address)
{
- PULONG Pt;
+ BOOLEAN Ret;
ULONG Pte;
- KIRQL OldIrql;
- if (Address < MmSystemRangeStart && Process == NULL)
+ /* We never set swap entries for kernel addresses */
+ if (Address >= MmSystemRangeStart)
{
- DPRINT1("MmSetDirtyPage is called for user space without a
process.\n");
- KeBugCheck(MEMORY_MANAGEMENT);
+ ASSERT(Process == NULL);
+ return FALSE;
}
- Pt = MmGetPageTableForProcess(Process, Address, FALSE, &OldIrql);
- if (Pt == NULL)
- {
- KeBugCheck(MEMORY_MANAGEMENT);
- }
+ ASSERT(Process != NULL);
+ ASSERT(Process == PsGetCurrentProcess());
- do
- {
- Pte = *Pt;
- } while (Pte != InterlockedCompareExchangePte(Pt, Pte | PA_DIRTY, Pte));
+ MiLockProcessWorkingSetShared(Process, PsGetCurrentThread());
- if (!(Pte & PA_PRESENT))
+ if (MiQueryPageTableReferences(Address) == 0)
{
- KeBugCheck(MEMORY_MANAGEMENT);
- }
- else
- {
- /* The processor will never clear this bit itself, therefore
- * we do not need to flush the TLB here when setting it */
- MmUnmapPageTable(Pt, OldIrql);
+ /* There can't be a swap entry if there is no PDE */
+ MiUnlockProcessWorkingSetShared(Process, PsGetCurrentThread());
+ return FALSE;
}
+
+ MiMakePdeExistAndMakeValid(MiAddressToPde(Address), Process, MM_NOIRQL);
+
+ Pte = MiAddressToPte(Address)->u.Long;
+ Ret = !FlagOn(Pte, PA_PRESENT) && FlagOn(Pte, 0x800);
+
+ MiUnlockProcessWorkingSetShared(Process, PsGetCurrentThread());
+
+ return Ret;
}
VOID
NTAPI
-MmClearPageAccessedBit(PEPROCESS Process, PVOID Address)
+MmGetPageFileMapping(PEPROCESS Process, PVOID Address, SWAPENTRY* SwapEntry)
{
- PULONG Pt;
- LONG Pte;
- KIRQL OldIrql;
+ ULONG Pte;
- if (Address < MmSystemRangeStart && Process == NULL)
+ /* We never set swap entries for kernel addresses */
+ if (Address >= MmSystemRangeStart)
{
- DPRINT1("MmClearPageAccessedBit is called for user space without a
process.\n");
- KeBugCheck(MEMORY_MANAGEMENT);
+ ASSERT(Process == NULL);
+ *SwapEntry = 0;
+ return;
}
- Pt = MmGetPageTableForProcess(Process, Address, FALSE, &OldIrql);
- if (Pt == NULL)
- {
- KeBugCheck(MEMORY_MANAGEMENT);
- }
+ ASSERT(Process != NULL);
+ ASSERT(Process == PsGetCurrentProcess());
- do
- {
- Pte = *Pt;
- } while (Pte != InterlockedCompareExchangePte(Pt, Pte & ~PA_ACCESSED, Pte));
+ MiLockProcessWorkingSetShared(Process, PsGetCurrentThread());
- if (!(Pte & PA_PRESENT))
+ if (MiQueryPageTableReferences(Address) == 0)
{
- KeBugCheck(MEMORY_MANAGEMENT);
+ /* There can't be a swap entry if there is no PDE */
+ MiUnlockProcessWorkingSetShared(Process, PsGetCurrentThread());
+ *SwapEntry = 0;
+ return;
}
- MiFlushTlb(Pt, Address, OldIrql);
-}
+ MiMakePdeExistAndMakeValid(MiAddressToPde(Address), Process, MM_NOIRQL);
-BOOLEAN
-NTAPI
-MmIsPageAccessed(PEPROCESS Process, PVOID Address)
-{
- return BooleanFlagOn(MmGetPageEntryForProcess(Process, Address), PA_ACCESSED);
-}
-
-BOOLEAN
-NTAPI
-MmIsPagePresent(PEPROCESS Process, PVOID Address)
-{
- return MmGetPageEntryForProcess(Process, Address) & PA_PRESENT;
-}
-
-BOOLEAN
-NTAPI
-MmIsDisabledPage(PEPROCESS Process, PVOID Address)
-{
- ULONG_PTR Entry = MmGetPageEntryForProcess(Process, Address);
- return !(Entry & PA_PRESENT) && !(Entry & 0x800) && (Entry
>> PAGE_SHIFT);
-}
+ Pte = MiAddressToPte(Address)->u.Long;
+ if (!FlagOn(Pte, PA_PRESENT) && FlagOn(Pte, 0x800))
+ *SwapEntry = Pte >> 1;
+ else
+ *SwapEntry = 0;
-BOOLEAN
-NTAPI
-MmIsPageSwapEntry(PEPROCESS Process, PVOID Address)
-{
- ULONG Entry;
- Entry = MmGetPageEntryForProcess(Process, Address);
- return !(Entry & PA_PRESENT) && (Entry & 0x800);
+ MiUnlockProcessWorkingSetShared(Process, PsGetCurrentThread());
}
NTSTATUS
@@ -610,56 +548,39 @@ MmCreatePageFileMapping(PEPROCESS Process,
PVOID Address,
SWAPENTRY SwapEntry)
{
- PULONG Pt;
+ PMMPTE PointerPte;
ULONG Pte;
- KIRQL OldIrql;
- if (Process == NULL && Address < MmSystemRangeStart)
- {
- DPRINT1("No process\n");
- KeBugCheck(MEMORY_MANAGEMENT);
- }
- if (Process != NULL && Address >= MmSystemRangeStart)
- {
- DPRINT1("Setting kernel address with process context\n");
- KeBugCheck(MEMORY_MANAGEMENT);
- }
+ /* This should not be called for kernel space anymore */
+ ASSERT(Process != NULL);
+ ASSERT(Address < MmSystemRangeStart);
+
+ /* And we don't support creating for other process */
+ ASSERT(Process == PsGetCurrentProcess());
if (SwapEntry & (1 << 31))
{
KeBugCheck(MEMORY_MANAGEMENT);
}
- Pt = MmGetPageTableForProcess(Process, Address, FALSE, &OldIrql);
- if (Pt == NULL)
- {
- /* Nobody should page out an address that hasn't even been mapped */
- /* But we might place a wait entry first, requiring the page table */
- if (SwapEntry != MM_WAIT_ENTRY)
- {
- KeBugCheck(MEMORY_MANAGEMENT);
- }
- Pt = MmGetPageTableForProcess(Process, Address, TRUE, &OldIrql);
- }
- Pte = InterlockedExchangePte(Pt, SwapEntry << 1);
+ /* We are tinkering with the PDE here. Ensure it will be there */
+ ASSERT(Process == PsGetCurrentProcess());
+ MiLockProcessWorkingSetUnsafe(Process, PsGetCurrentThread());
+
+ MiMakePdeExistAndMakeValid(MiAddressToPde(Address), Process, MM_NOIRQL);
+
+ PointerPte = MiAddressToPte(Address);
+ Pte = InterlockedExchangePte(PointerPte, SwapEntry << 1);
if (Pte != 0)
{
KeBugCheckEx(MEMORY_MANAGEMENT, SwapEntry, (ULONG_PTR)Process,
(ULONG_PTR)Address, 0);
}
- if (Address < MmSystemRangeStart)
- {
- /* Add PDE reference */
- Process->Vm.VmWorkingSetList->UsedPageTableEntries[MiGetPdeOffset(Address)]++;
- ASSERT(Process->Vm.VmWorkingSetList->UsedPageTableEntries[MiGetPdeOffset(Address)]
<= PTE_PER_PAGE);
- }
+ /* This used to be a 0 PTE, now we need a valid PDE to keep it around */
+ MiIncrementPageTableReferences(Address);
+ MiUnlockProcessWorkingSetUnsafe(Process, PsGetCurrentThread());
- /* We don't need to flush the TLB here because it
- * only caches valid translations and a zero PTE
- * is not a valid translation */
- MmUnmapPageTable(Pt, OldIrql);
-
- return(STATUS_SUCCESS);
+ return STATUS_SUCCESS;
}
@@ -668,50 +589,41 @@ NTAPI
MmCreateVirtualMappingUnsafe(PEPROCESS Process,
PVOID Address,
ULONG flProtect,
- PPFN_NUMBER Pages,
- ULONG PageCount)
+ PFN_NUMBER Page)
{
ULONG Attributes;
- PVOID Addr;
- ULONG i;
- ULONG oldPdeOffset, PdeOffset;
- PULONG Pt = NULL;
+ PMMPTE PointerPte;
ULONG Pte;
- KIRQL OldIrql;
- DPRINT("MmCreateVirtualMappingUnsafe(%p, %p, %lu, %p (%x), %lu)\n",
- Process, Address, flProtect, Pages, *Pages, PageCount);
+ DPRINT("MmCreateVirtualMappingUnsafe(%p, %p, %lu, %x)\n",
+ Process, Address, flProtect, Page);
ASSERT(((ULONG_PTR)Address % PAGE_SIZE) == 0);
+ /* Make sure our PDE is valid, and that everything is going fine */
if (Process == NULL)
{
if (Address < MmSystemRangeStart)
{
- DPRINT1("NULL process given for user-mode mapping at %p -- %lu pages
starting at %Ix\n", Address, PageCount, *Pages);
- KeBugCheck(MEMORY_MANAGEMENT);
- }
- if (PageCount > 0x10000 ||
- (ULONG_PTR) Address / PAGE_SIZE + PageCount > 0x100000)
- {
- DPRINT1("Page count too large for kernel-mode mapping at %p -- %lu pages
starting at %Ix\n", Address, PageCount, *Pages);
+ DPRINT1("NULL process given for user-mode mapping at %p\n",
Address);
KeBugCheck(MEMORY_MANAGEMENT);
}
+ if (!MiSynchronizeSystemPde(MiAddressToPde(Address)))
+ MiFillSystemPageDirectory(Address, PAGE_SIZE);
}
else
{
- if (Address >= MmSystemRangeStart)
+ if ((Address >= MmSystemRangeStart) || Add2Ptr(Address, PAGE_SIZE) >=
MmSystemRangeStart)
{
- DPRINT1("Process %p given for kernel-mode mapping at %p -- %lu pages
starting at %Ix\n", Process, Address, PageCount, *Pages);
- KeBugCheck(MEMORY_MANAGEMENT);
- }
- if (PageCount > (ULONG_PTR)MmSystemRangeStart / PAGE_SIZE ||
- (ULONG_PTR) Address / PAGE_SIZE + PageCount >
- (ULONG_PTR)MmSystemRangeStart / PAGE_SIZE)
- {
- DPRINT1("Page count too large for process %p user-mode mapping at %p --
%lu pages starting at %Ix\n", Process, Address, PageCount, *Pages);
+ DPRINT1("Process %p given for kernel-mode mapping at %p -- %lu pages
starting at %Ix\n", Process, Address);
KeBugCheck(MEMORY_MANAGEMENT);
}
+
+ /* Only for current process !!! */
+ ASSERT(Process = PsGetCurrentProcess());
+ MiLockProcessWorkingSetUnsafe(Process, PsGetCurrentThread());
+
+ MiMakePdeExistAndMakeValid(MiAddressToPde(Address), Process, MM_NOIRQL);
}
Attributes = ProtectToPTE(flProtect);
@@ -725,58 +637,28 @@ MmCreateVirtualMappingUnsafe(PEPROCESS Process,
Attributes |= PA_USER;
}
- Addr = Address;
- /* MmGetPageTableForProcess should be called on the first run, so
- * let this trigger it */
- oldPdeOffset = ADDR_TO_PDE_OFFSET(Addr) + 1;
- for (i = 0; i < PageCount; i++, Addr = (PVOID)((ULONG_PTR)Addr + PAGE_SIZE))
- {
- if (!(Attributes & PA_PRESENT) && Pages[i] != 0)
- {
- DPRINT1("Setting physical address but not allowing access at address
"
- "0x%p with attributes %x/%x.\n",
- Addr, Attributes, flProtect);
- KeBugCheck(MEMORY_MANAGEMENT);
- }
- PdeOffset = ADDR_TO_PDE_OFFSET(Addr);
- if (oldPdeOffset != PdeOffset)
- {
- if(Pt) MmUnmapPageTable(Pt, OldIrql);
- Pt = MmGetPageTableForProcess(Process, Addr, TRUE, &OldIrql);
- if (Pt == NULL)
- {
- KeBugCheck(MEMORY_MANAGEMENT);
- }
- }
- else
- {
- Pt++;
- }
- oldPdeOffset = PdeOffset;
-
- Pte = InterlockedExchangePte(Pt, PFN_TO_PTE(Pages[i]) | Attributes);
+ /* This must be for a valid address */
+ ASSERT(FlagOn(Attributes, PA_PRESENT));
- /* There should not be anything valid here */
- if (Pte != 0)
- {
- DPRINT1("Bad PTE %lx at %p for %p + %lu\n", Pte, Pt, Address, i);
- KeBugCheck(MEMORY_MANAGEMENT);
- }
+ PointerPte = MiAddressToPte(Address);
+ Pte = InterlockedExchangePte(PointerPte, PFN_TO_PTE(Page) | Attributes);
+ /* There should not have been anything valid here */
+ if (Pte != 0)
+ {
+ DPRINT1("Bad PTE %lx at %p for %p\n", Pte, PointerPte, Address);
+ KeBugCheck(MEMORY_MANAGEMENT);
+ }
- /* We don't need to flush the TLB here because it only caches valid
translations
- * and we're moving this PTE from invalid to valid so it can't be cached
right now */
+ /* We don't need to flush the TLB here because it only caches valid translations
+ * and we're moving this PTE from invalid to valid so it can't be cached
right now */
- if (Addr < MmSystemRangeStart)
- {
- /* Add PDE reference */
- Process->Vm.VmWorkingSetList->UsedPageTableEntries[MiGetPdeOffset(Addr)]++;
- ASSERT(Process->Vm.VmWorkingSetList->UsedPageTableEntries[MiGetPdeOffset(Addr)]
<= PTE_PER_PAGE);
- }
+ if (Address < MmSystemRangeStart)
+ {
+ /* Add PDE reference */
+ MiIncrementPageTableReferences(Address);
+ MiUnlockProcessWorkingSetUnsafe(Process, PsGetCurrentThread());
}
- ASSERT(Addr > Address);
- MmUnmapPageTable(Pt, OldIrql);
-
return(STATUS_SUCCESS);
}
@@ -785,45 +667,60 @@ NTAPI
MmCreateVirtualMapping(PEPROCESS Process,
PVOID Address,
ULONG flProtect,
- PPFN_NUMBER Pages,
- ULONG PageCount)
+ PFN_NUMBER Page)
{
- ULONG i;
-
ASSERT((ULONG_PTR)Address % PAGE_SIZE == 0);
- for (i = 0; i < PageCount; i++)
+ if (!MmIsPageInUse(Page))
{
- if (!MmIsPageInUse(Pages[i]))
- {
- DPRINT1("Page at address %x not in use\n", PFN_TO_PTE(Pages[i]));
- KeBugCheck(MEMORY_MANAGEMENT);
- }
+ DPRINT1("Page at address %x not in use\n", PFN_TO_PTE(Page));
+ KeBugCheck(MEMORY_MANAGEMENT);
}
- return(MmCreateVirtualMappingUnsafe(Process,
- Address,
- flProtect,
- Pages,
- PageCount));
+ return MmCreateVirtualMappingUnsafe(Process, Address, flProtect, Page);
}
ULONG
NTAPI
MmGetPageProtect(PEPROCESS Process, PVOID Address)
{
- ULONG Entry;
+ ULONG_PTR Pte;
ULONG Protect;
- Entry = MmGetPageEntryForProcess(Process, Address);
+ if (Address >= MmSystemRangeStart)
+ {
+ ASSERT(Process == NULL);
+
+ if (!MiSynchronizeSystemPde(MiAddressToPde(Address)))
+ return PAGE_NOACCESS;
+ }
+ else
+ {
+ ASSERT(Address < MmSystemRangeStart);
+ ASSERT(Process != NULL);
+
+ ASSERT(Process == PsGetCurrentProcess());
+ MiLockProcessWorkingSetShared(Process, PsGetCurrentThread());
- if (!(Entry & PA_PRESENT))
+ if (MiQueryPageTableReferences(Address) == 0)
+ {
+ /* It can't be present if there is no PDE */
+ MiUnlockProcessWorkingSetShared(Process, PsGetCurrentThread());
+ return PAGE_NOACCESS;
+ }
+
+ MiMakePdeExistAndMakeValid(MiAddressToPde(Address), Process, MM_NOIRQL);
+ }
+
+ Pte = MiAddressToPte(Address)->u.Long;
+
+ if (!(Pte & PA_PRESENT))
{
Protect = PAGE_NOACCESS;
}
else
{
- if (Entry & PA_READWRITE)
+ if (Pte & PA_READWRITE)
{
Protect = PAGE_READWRITE;
}
@@ -831,20 +728,23 @@ MmGetPageProtect(PEPROCESS Process, PVOID Address)
{
Protect = PAGE_EXECUTE_READ;
}
- if (Entry & PA_CD)
+ if (Pte & PA_CD)
{
Protect |= PAGE_NOCACHE;
}
- if (Entry & PA_WT)
+ if (Pte & PA_WT)
{
Protect |= PAGE_WRITETHROUGH;
}
- if (!(Entry & PA_USER))
+ if (!(Pte & PA_USER))
{
Protect |= PAGE_SYSTEM;
}
-
}
+
+ if (Address < MmSystemRangeStart)
+ MiUnlockProcessWorkingSetShared(Process, PsGetCurrentThread());
+
return(Protect);
}
@@ -853,43 +753,80 @@ NTAPI
MmSetPageProtect(PEPROCESS Process, PVOID Address, ULONG flProtect)
{
ULONG Attributes = 0;
- PULONG Pt;
+ PMMPTE PointerPte;
ULONG Pte;
- KIRQL OldIrql;
DPRINT("MmSetPageProtect(Process %p Address %p flProtect %x)\n",
Process, Address, flProtect);
+ ASSERT(Process != NULL);
+ ASSERT(Address < MmSystemRangeStart);
+
+ ASSERT(Process == PsGetCurrentProcess());
+
+ MiLockProcessWorkingSetUnsafe(Process, PsGetCurrentThread());
+
+ MiMakePdeExistAndMakeValid(MiAddressToPde(Address), Process, MM_NOIRQL);
+
Attributes = ProtectToPTE(flProtect);
Attributes &= 0xfff;
- if (Address >= MmSystemRangeStart)
- {
- Attributes &= ~PA_USER;
- }
- else
- {
- Attributes |= PA_USER;
- }
+ Attributes |= PA_USER;
+
+ PointerPte = MiAddressToPte(Address);
+ Pte = InterlockedExchangePte(PointerPte, PAGE_MASK(PointerPte->u.Long) |
Attributes | (PointerPte->u.Long & (PA_ACCESSED|PA_DIRTY)));
- Pt = MmGetPageTableForProcess(Process, Address, FALSE, &OldIrql);
- if (Pt == NULL)
+ // We should be able to bring a page back from PAGE_NOACCESS
+ if ((Pte & 0x800) || !(Pte >> PAGE_SHIFT))
{
+ DPRINT1("Invalid Pte %lx\n", Pte);
KeBugCheck(MEMORY_MANAGEMENT);
}
- Pte = InterlockedExchangePte(Pt, PAGE_MASK(*Pt) | Attributes | (*Pt &
(PA_ACCESSED|PA_DIRTY)));
- // We should be able to bring a page back from PAGE_NOACCESS
+ if ((Pte & 0xFFF) != Attributes)
+ KeInvalidateTlbEntry(Address);
+
+ MiUnlockProcessWorkingSetUnsafe(Process, PsGetCurrentThread());
+}
+
+VOID
+NTAPI
+MmSetDirtyBit(PEPROCESS Process, PVOID Address, BOOLEAN Bit)
+{
+ PMMPTE PointerPte;
+ ULONG Pte;
+
+ DPRINT("MmSetDirtyBit(Process %p Address %p Bit %x)\n",
+ Process, Address, Bit);
+
+ ASSERT(Process != NULL);
+ ASSERT(Address < MmSystemRangeStart);
+
+ ASSERT(Process == PsGetCurrentProcess());
+
+ MiLockProcessWorkingSetUnsafe(Process, PsGetCurrentThread());
+
+ MiMakePdeExistAndMakeValid(MiAddressToPde(Address), Process, MM_NOIRQL);
+
+ PointerPte = MiAddressToPte(Address);
+ Pte = PointerPte->u.Long;
+ if (Bit)
+ Pte |= PA_DIRTY;
+ else
+ Pte &= ~PA_DIRTY;
+ Pte = InterlockedExchangePte(PointerPte, Pte);
+
+ // We shouldnl't set dirty bit on non-mapped adresses
if ((Pte & 0x800) || !(Pte >> PAGE_SHIFT))
{
DPRINT1("Invalid Pte %lx\n", Pte);
KeBugCheck(MEMORY_MANAGEMENT);
}
- if((Pte & Attributes) != Attributes)
- MiFlushTlb(Pt, Address, OldIrql);
- else
- MmUnmapPageTable(Pt, OldIrql);
+ if (!Bit)
+ KeInvalidateTlbEntry(Address);
+
+ MiUnlockProcessWorkingSetUnsafe(Process, PsGetCurrentThread());
}
CODE_SEG("INIT")
diff --git a/ntoskrnl/mm/marea.c b/ntoskrnl/mm/marea.c
index 92eebc173cb..1942dd76b27 100644
--- a/ntoskrnl/mm/marea.c
+++ b/ntoskrnl/mm/marea.c
@@ -328,24 +328,6 @@ MmFreeMemoryArea(
FreePage(FreePageContext, MemoryArea, (PVOID)Address,
Page, SwapEntry, (BOOLEAN)Dirty);
}
-#if (_MI_PAGING_LEVELS == 2)
- /* Remove page table reference */
- ASSERT(KeGetCurrentIrql() <= APC_LEVEL);
- if ((SwapEntry || Page) && ((PVOID)Address < MmSystemRangeStart))
- {
- ASSERT(AddressSpace != MmGetKernelAddressSpace());
- if (MiQueryPageTableReferences((PVOID)Address) == 0)
- {
- /* No PTE relies on this PDE. Release it */
- KIRQL OldIrql = MiAcquirePfnLock();
- PMMPDE PointerPde = MiAddressToPde(Address);
- ASSERT(PointerPde->u.Hard.Valid == 1);
- MiDeletePte(PointerPde, MiPdeToPte(PointerPde), Process, NULL);
- ASSERT(PointerPde->u.Hard.Valid == 0);
- MiReleasePfnLock(OldIrql);
- }
- }
-#endif
}
if (Process != NULL &&
diff --git a/ntoskrnl/mm/rmap.c b/ntoskrnl/mm/rmap.c
index c680a8f7a9f..64758cc5b89 100644
--- a/ntoskrnl/mm/rmap.c
+++ b/ntoskrnl/mm/rmap.c
@@ -102,18 +102,26 @@ GetEntry:
MmLockAddressSpace(AddressSpace);
- if (MmGetPfnForProcess(Process, Address) != Page)
+ MemoryArea = MmLocateMemoryAreaByAddress(AddressSpace, Address);
+ if (MemoryArea == NULL || MemoryArea->DeleteInProgress)
{
- /* This changed in the short window where we didn't have any locks */
MmUnlockAddressSpace(AddressSpace);
ExReleaseRundownProtection(&Process->RundownProtect);
ObDereferenceObject(Process);
goto GetEntry;
}
- MemoryArea = MmLocateMemoryAreaByAddress(AddressSpace, Address);
- if (MemoryArea == NULL || MemoryArea->DeleteInProgress)
+
+ /* Attach to it, if needed */
+ ASSERT(PsGetCurrentProcess() == PsInitialSystemProcess);
+ if (Process != PsInitialSystemProcess)
+ KeAttachProcess(&Process->Pcb);
+
+ if (MmGetPfnForProcess(Process, Address) != Page)
{
+ /* This changed in the short window where we didn't have any locks */
+ if (Process != PsInitialSystemProcess)
+ KeDetachProcess();
MmUnlockAddressSpace(AddressSpace);
ExReleaseRundownProtection(&Process->RundownProtect);
ObDereferenceObject(Process);
@@ -140,6 +148,8 @@ GetEntry:
{
/* The segment is being read or something. Give up */
MmUnlockSectionSegment(Segment);
+ if (Process != PsInitialSystemProcess)
+ KeDetachProcess();
MmUnlockAddressSpace(AddressSpace);
ExReleaseRundownProtection(&Process->RundownProtect);
ObDereferenceObject(Process);
@@ -160,11 +170,6 @@ GetEntry:
/* This page is private to the process */
MmUnlockSectionSegment(Segment);
- /* Attach to it, if needed */
- ASSERT(PsGetCurrentProcess() == PsInitialSystemProcess);
- if (Process != PsInitialSystemProcess)
- KeAttachProcess(&Process->Pcb);
-
/* Check if we should write it back to the page file */
SwapEntry = MmGetSavedSwapEntryPage(Page);
@@ -179,7 +184,7 @@ GetEntry:
Address, NULL);
/* We can't, so let this page in the Process VM */
- MmCreateVirtualMapping(Process, Address, Region->Protect,
&Page, 1);
+ MmCreateVirtualMapping(Process, Address, Region->Protect, Page);
MmInsertRmap(Page, Process, Address);
MmSetDirtyPage(Process, Address);
@@ -219,7 +224,7 @@ GetEntry:
MmFreeSwapPage(SwapEntry);
/* We can't, so let this page in the Process VM */
- MmCreateVirtualMapping(Process, Address, Region->Protect,
&Page, 1);
+ MmCreateVirtualMapping(Process, Address, Region->Protect, Page);
MmInsertRmap(Page, Process, Address);
MmSetDirtyPage(Process, Address);
@@ -241,7 +246,6 @@ GetEntry:
}
/* We can finally let this page go */
-
MmUnlockAddressSpace(AddressSpace);
if (Process != PsInitialSystemProcess)
KeDetachProcess();
@@ -262,6 +266,8 @@ GetEntry:
Released = MmUnsharePageEntrySectionSegment(MemoryArea, Segment, &Offset,
Dirty, TRUE, NULL);
MmUnlockSectionSegment(Segment);
+ if (Process != PsInitialSystemProcess)
+ KeDetachProcess();
MmUnlockAddressSpace(AddressSpace);
ExReleaseRundownProtection(&Process->RundownProtect);
diff --git a/ntoskrnl/mm/section.c b/ntoskrnl/mm/section.c
index 2485d5bb5f5..0b6b8e80416 100644
--- a/ntoskrnl/mm/section.c
+++ b/ntoskrnl/mm/section.c
@@ -1636,8 +1636,7 @@ MmNotPresentFaultSectionView(PMMSUPPORT AddressSpace,
Status = MmCreateVirtualMapping(Process,
PAddress,
Region->Protect,
- &Page,
- 1);
+ Page);
if (!NT_SUCCESS(Status))
{
DPRINT("MmCreateVirtualMapping failed, not out of memory\n");
@@ -1679,8 +1678,7 @@ MmNotPresentFaultSectionView(PMMSUPPORT AddressSpace,
Status = MmCreateVirtualMappingUnsafe(Process,
PAddress,
Region->Protect,
- &Page,
- 1);
+ Page);
if (!NT_SUCCESS(Status))
{
DPRINT("MmCreateVirtualMappingUnsafe failed, not out of
memory\n");
@@ -1729,7 +1727,7 @@ MmNotPresentFaultSectionView(PMMSUPPORT AddressSpace,
MmSetPageEntrySectionSegment(Segment, &Offset, MAKE_SSE(Page <<
PAGE_SHIFT, 1));
MmUnlockSectionSegment(Segment);
- Status = MmCreateVirtualMapping(Process, PAddress, Attributes, &Page,
1);
+ Status = MmCreateVirtualMapping(Process, PAddress, Attributes, Page);
if (!NT_SUCCESS(Status))
{
DPRINT1("Unable to create virtual mapping\n");
@@ -1828,8 +1826,7 @@ MmNotPresentFaultSectionView(PMMSUPPORT AddressSpace,
Status = MmCreateVirtualMapping(Process,
PAddress,
Attributes,
- &Page,
- 1);
+ Page);
if (!NT_SUCCESS(Status))
{
DPRINT1("Unable to create virtual mapping\n");
@@ -1857,8 +1854,7 @@ MmNotPresentFaultSectionView(PMMSUPPORT AddressSpace,
Status = MmCreateVirtualMapping(Process,
PAddress,
Attributes,
- &Page,
- 1);
+ Page);
if (!NT_SUCCESS(Status))
{
DPRINT1("Unable to create virtual mapping\n");
@@ -1985,8 +1981,7 @@ MmAccessFaultSectionView(PMMSUPPORT AddressSpace,
Status = MmCreateVirtualMapping(Process,
PAddress,
Region->Protect,
- &NewPage,
- 1);
+ NewPage);
if (!NT_SUCCESS(Status))
{
DPRINT1("MmCreateVirtualMapping failed, unable to create virtual mapping,
not out of memory\n");
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Jérôme Gardou