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[NTOS]: Zeroed pages should go at the front, not the back of the zero list. Going to the back is a special boot-only case on MP, which isn't supported. Implement zero-only version of MiInsertPageInList, remove MiInsertZeroPageAtBack.
[NTOS]: Remove many other deprecated functions. Physical memory consistency should now be higher than in the past. svn path=/trunk/; revision=48919
This commit is contained in:
Sir Richard
parent
354ad6b9eb
commit
5b9cd7fcae
6 changed files with 82 additions and 430 deletions
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@ -444,10 +444,8 @@ MmMapLockedPagesSpecifyCache(IN PMDL Mdl,
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return Base;
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}
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//
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// In user-mode, let ReactOS do it
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//
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return MiMapLockedPagesInUserSpace(Mdl, Base, CacheType, BaseAddress);
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UNIMPLEMENTED;
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return NULL;
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}
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/*
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@ -557,10 +555,7 @@ MmUnmapLockedPages(IN PVOID BaseAddress,
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}
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else
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{
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//
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// Let ReactOS handle it
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//
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MiUnmapLockedPagesInUserSpace(BaseAddress, Mdl);
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UNIMPLEMENTED;
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}
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}
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@ -920,15 +920,9 @@ MiUnmapLockedPagesInUserSpace(
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VOID
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NTAPI
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MiInsertInListTail(
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MiInsertPageInList(
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IN PMMPFNLIST ListHead,
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IN PMMPFN Entry
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);
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VOID
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NTAPI
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MiInsertZeroListAtBack(
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IN PFN_NUMBER PageIndex
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IN PFN_NUMBER PageFrameIndex
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);
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VOID
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@ -71,137 +71,6 @@ MiZeroPhysicalPage(IN PFN_NUMBER PageFrameIndex)
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MiUnmapPageInHyperSpace(Process, VirtualAddress, OldIrql);
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}
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VOID
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NTAPI
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MiInsertInListTail(IN PMMPFNLIST ListHead,
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IN PMMPFN Entry)
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{
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PFN_NUMBER OldBlink, EntryIndex = MiGetPfnEntryIndex(Entry);
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ASSERT(KeGetCurrentIrql() == DISPATCH_LEVEL);
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ASSERT_LIST_INVARIANT(ListHead);
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/* Get the back link */
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OldBlink = ListHead->Blink;
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if (OldBlink != LIST_HEAD)
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{
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/* Set the back pointer to point to us now */
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MiGetPfnEntry(OldBlink)->u1.Flink = EntryIndex;
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}
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else
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{
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/* Set the list to point to us */
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ListHead->Flink = EntryIndex;
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}
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/* Set the entry to point to the list head forwards, and the old page backwards */
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Entry->u1.Flink = LIST_HEAD;
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Entry->u2.Blink = OldBlink;
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/* And now the head points back to us, since we are last */
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ListHead->Blink = EntryIndex;
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ListHead->Total++;
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ASSERT_LIST_INVARIANT(ListHead);
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}
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VOID
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NTAPI
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MiInsertZeroListAtBack(IN PFN_NUMBER EntryIndex)
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{
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PFN_NUMBER OldBlink;
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PMMPFNLIST ListHead;
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PMMPFN Pfn1;
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#if 0
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PMMPFN Blink;
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ULONG Color;
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PMMCOLOR_TABLES ColorHead;
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#endif
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/* Make sure the PFN lock is held */
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ASSERT(KeGetCurrentIrql() == DISPATCH_LEVEL);
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/* Get the descriptor */
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Pfn1 = MiGetPfnEntry(EntryIndex);
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ASSERT(Pfn1->u3.e2.ReferenceCount == 0);
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ASSERT(Pfn1->u4.MustBeCached == 0);
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ASSERT(Pfn1->u3.e1.Rom == 0);
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ASSERT(Pfn1->u3.e1.RemovalRequested == 0);
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ASSERT(Pfn1->u4.InPageError == 0);
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/* Use the zero list */
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ListHead = &MmZeroedPageListHead;
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ASSERT_LIST_INVARIANT(ListHead);
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ListHead->Total++;
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/* Get the back link */
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OldBlink = ListHead->Blink;
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if (OldBlink != LIST_HEAD)
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{
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/* Set the back pointer to point to us now */
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MiGetPfnEntry(OldBlink)->u1.Flink = EntryIndex;
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}
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else
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{
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/* Set the list to point to us */
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ListHead->Flink = EntryIndex;
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}
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/* Set the entry to point to the list head forwards, and the old page backwards */
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Pfn1->u1.Flink = LIST_HEAD;
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Pfn1->u2.Blink = OldBlink;
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/* And now the head points back to us, since we are last */
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ListHead->Blink = EntryIndex;
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ASSERT_LIST_INVARIANT(ListHead);
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/* Update the page location */
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Pfn1->u3.e1.PageLocation = ZeroedPageList;
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/* Update the available page count */
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MmAvailablePages++;
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/* Check if we've reached the configured low memory threshold */
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if (MmAvailablePages == MmLowMemoryThreshold)
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{
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/* Clear the event, because now we're ABOVE the threshold */
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KeClearEvent(MiLowMemoryEvent);
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}
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else if (MmAvailablePages == MmHighMemoryThreshold)
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{
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/* Otherwise check if we reached the high threshold and signal the event */
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KeSetEvent(MiHighMemoryEvent, 0, FALSE);
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}
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#if 0
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/* Get the page color */
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Color = EntryIndex & MmSecondaryColorMask;
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/* Get the first page on the color list */
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ColorHead = &MmFreePagesByColor[ZeroedPageList][Color];
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if (ColorHead->Flink == LIST_HEAD)
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{
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/* The list is empty, so we are the first page */
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Pfn1->u4.PteFrame = -1;
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ColorHead->Flink = EntryIndex;
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}
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else
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{
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/* Get the previous page */
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Blink = (PMMPFN)ColorHead->Blink;
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/* Make it link to us */
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Pfn1->u4.PteFrame = MiGetPfnEntryIndex(Blink);
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Blink->OriginalPte.u.Long = EntryIndex;
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}
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/* Now initialize our own list pointers */
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ColorHead->Blink = Pfn1;
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Pfn1->OriginalPte.u.Long = LIST_HEAD;
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/* And increase the count in the colored list */
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ColorHead->Count++;
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#endif
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}
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VOID
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NTAPI
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MiUnlinkFreeOrZeroedPage(IN PMMPFN Entry)
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@ -527,45 +396,6 @@ MiRemoveZeroPage(IN ULONG Color)
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/* Return the page */
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return PageIndex;
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}
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PMMPFN
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NTAPI
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MiRemoveHeadList(IN PMMPFNLIST ListHead)
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{
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PFN_NUMBER Entry, Flink;
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PMMPFN Pfn1;
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ASSERT(KeGetCurrentIrql() == DISPATCH_LEVEL);
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ASSERT_LIST_INVARIANT(ListHead);
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/* Get the entry that's currently first on the list */
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Entry = ListHead->Flink;
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Pfn1 = MiGetPfnEntry(Entry);
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/* Make the list point to the entry following the first one */
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Flink = Pfn1->u1.Flink;
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ListHead->Flink = Flink;
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/* Check if the next entry is actually the list head */
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if (ListHead->Flink != LIST_HEAD)
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{
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/* It isn't, so therefore whoever is coming next points back to the head */
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MiGetPfnEntry(Flink)->u2.Blink = LIST_HEAD;
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}
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else
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{
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/* Then the list is empty, so the backlink should point back to us */
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ListHead->Blink = LIST_HEAD;
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}
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/* We are not on a list anymore */
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Pfn1->u1.Flink = Pfn1->u2.Blink = 0;
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ListHead->Total--;
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ASSERT_LIST_INVARIANT(ListHead);
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/* Return the head element */
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return Pfn1;
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}
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extern KEVENT ZeroPageThreadEvent;
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@ -684,6 +514,82 @@ MiInsertPageInFreeList(IN PFN_NUMBER PageFrameIndex)
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}
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}
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/* Note: This function is hardcoded only for the zeroed page list, for now */
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VOID
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NTAPI
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MiInsertPageInList(IN PMMPFNLIST ListHead,
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IN PFN_NUMBER PageFrameIndex)
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{
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PFN_NUMBER Flink;
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PMMPFN Pfn1, Pfn2;
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MMLISTS ListName;
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/* For free pages, use MiInsertPageInFreeList */
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ASSERT(ListHead != &MmFreePageListHead);
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/* Make sure the lock is held */
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ASSERT(KeGetCurrentIrql() == DISPATCH_LEVEL);
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/* Make sure the PFN is valid */
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ASSERT((PageFrameIndex) &&
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(PageFrameIndex <= MmHighestPhysicalPage) &&
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(PageFrameIndex >= MmLowestPhysicalPage));
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/* Page should be unused */
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Pfn1 = MiGetPfnEntry(PageFrameIndex);
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ASSERT(Pfn1->u3.e2.ReferenceCount == 0);
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ASSERT(Pfn1->u3.e1.Rom != 1);
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/* Only used for zero pages in ReactOS */
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ListName = ListHead->ListName;
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ASSERT(ListName == ZeroedPageList);
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ListHead->Total++;
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/* Don't handle bad pages yet yet */
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ASSERT(Pfn1->u3.e1.RemovalRequested == 0);
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/* Make the head of the list point to this page now */
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Flink = ListHead->Flink;
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ListHead->Flink = PageFrameIndex;
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/* Make the page point to the previous head, and back to the list */
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Pfn1->u1.Flink = Flink;
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Pfn1->u2.Blink = LIST_HEAD;
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/* Was the list empty? */
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if (Flink != LIST_HEAD)
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{
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/* It wasn't, so update the backlink of the previous head page */
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Pfn2 = MiGetPfnEntry(Flink);
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Pfn2->u2.Blink = PageFrameIndex;
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}
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else
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{
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/* It was empty, so have it loop back around to this new page */
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ListHead->Blink = PageFrameIndex;
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}
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/* Move the page onto its new location */
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Pfn1->u3.e1.PageLocation = ListName;
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/* One more page on the system */
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MmAvailablePages++;
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/* Check if we've reached the configured low memory threshold */
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if (MmAvailablePages == MmLowMemoryThreshold)
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{
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/* Clear the event, because now we're ABOVE the threshold */
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KeClearEvent(MiLowMemoryEvent);
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}
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else if (MmAvailablePages == MmHighMemoryThreshold)
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{
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/* Otherwise check if we reached the high threshold and signal the event */
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KeSetEvent(MiHighMemoryEvent, 0, FALSE);
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}
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/* FIXME: Color code handling */
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}
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VOID
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NTAPI
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MiInitializePfn(IN PFN_NUMBER PageFrameIndex,
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@ -682,7 +682,7 @@ MmZeroPageThreadMain(PVOID Ignored)
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oldIrql = KeAcquireQueuedSpinLock(LockQueuePfnLock);
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MiInsertZeroListAtBack(PageIndex);
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MiInsertPageInList(&MmZeroedPageListHead, PageIndex);
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Count++;
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}
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DPRINT("Zeroed %d pages.\n", Count);
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@ -52,140 +52,6 @@ MmInitializeRmapList(VOID)
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50);
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}
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NTSTATUS
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NTAPI
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MmWritePagePhysicalAddress(PFN_NUMBER Page)
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{
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PMM_RMAP_ENTRY entry;
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PMEMORY_AREA MemoryArea;
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PMMSUPPORT AddressSpace;
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ULONG Type;
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PVOID Address;
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PEPROCESS Process;
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PMM_PAGEOP PageOp;
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ULONG Offset;
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NTSTATUS Status = STATUS_SUCCESS;
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/*
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* Check that the address still has a valid rmap; then reference the
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* process so it isn't freed while we are working.
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*/
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ExAcquireFastMutex(&RmapListLock);
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entry = MmGetRmapListHeadPage(Page);
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if (entry == NULL)
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{
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ExReleaseFastMutex(&RmapListLock);
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return(STATUS_UNSUCCESSFUL);
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}
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Process = entry->Process;
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Address = entry->Address;
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if ((((ULONG_PTR)Address) & 0xFFF) != 0)
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{
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KeBugCheck(MEMORY_MANAGEMENT);
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}
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if (Address < MmSystemRangeStart)
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{
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Status = ObReferenceObjectByPointer(Process, PROCESS_ALL_ACCESS, NULL, KernelMode);
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ExReleaseFastMutex(&RmapListLock);
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if (!NT_SUCCESS(Status))
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{
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return Status;
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}
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AddressSpace = &Process->Vm;
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}
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else
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{
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ExReleaseFastMutex(&RmapListLock);
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AddressSpace = MmGetKernelAddressSpace();
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}
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/*
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* Lock the address space; then check that the address we are using
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* still corresponds to a valid memory area (the page might have been
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* freed or paged out after we read the rmap entry.)
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*/
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MmLockAddressSpace(AddressSpace);
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MemoryArea = MmLocateMemoryAreaByAddress(AddressSpace, Address);
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if (MemoryArea == NULL || MemoryArea->DeleteInProgress)
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{
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MmUnlockAddressSpace(AddressSpace);
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if (Address < MmSystemRangeStart)
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{
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ObDereferenceObject(Process);
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}
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return(STATUS_UNSUCCESSFUL);
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}
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Type = MemoryArea->Type;
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if (Type == MEMORY_AREA_SECTION_VIEW)
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{
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Offset = (ULONG_PTR)Address - (ULONG_PTR)MemoryArea->StartingAddress
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+ MemoryArea->Data.SectionData.ViewOffset;
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/*
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* Get or create a pageop
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*/
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PageOp = MmGetPageOp(MemoryArea, NULL, 0,
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MemoryArea->Data.SectionData.Segment,
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Offset, MM_PAGEOP_PAGEOUT, TRUE);
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if (PageOp == NULL)
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{
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MmUnlockAddressSpace(AddressSpace);
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if (Address < MmSystemRangeStart)
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{
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ObDereferenceObject(Process);
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}
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return(STATUS_UNSUCCESSFUL);
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}
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/*
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* Release locks now we have a page op.
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*/
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MmUnlockAddressSpace(AddressSpace);
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/*
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* Do the actual page out work.
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*/
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Status = MmWritePageSectionView(AddressSpace, MemoryArea,
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Address, PageOp);
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}
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else if (Type == MEMORY_AREA_VIRTUAL_MEMORY)
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{
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PageOp = MmGetPageOp(MemoryArea, Address < MmSystemRangeStart ? Process->UniqueProcessId : NULL,
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Address, NULL, 0, MM_PAGEOP_PAGEOUT, TRUE);
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if (PageOp == NULL)
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{
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MmUnlockAddressSpace(AddressSpace);
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if (Address < MmSystemRangeStart)
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{
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ObDereferenceObject(Process);
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}
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return(STATUS_UNSUCCESSFUL);
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}
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/*
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* Release locks now we have a page op.
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*/
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MmUnlockAddressSpace(AddressSpace);
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/*
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* Do the actual page out work.
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*/
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Status = MmWritePageVirtualMemory(AddressSpace, MemoryArea,
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Address, PageOp);
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}
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else
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{
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KeBugCheck(MEMORY_MANAGEMENT);
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}
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if (Address < MmSystemRangeStart)
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{
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ObDereferenceObject(Process);
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}
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return(Status);
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}
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NTSTATUS
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NTAPI
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MmPageOutPhysicalAddress(PFN_NUMBER Page)
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@ -162,115 +162,6 @@ MiProtectVirtualMemory(IN PEPROCESS Process,
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return Status;
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}
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PVOID
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NTAPI
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MiMapLockedPagesInUserSpace(IN PMDL Mdl,
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IN PVOID BaseVa,
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IN MEMORY_CACHING_TYPE CacheType,
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IN PVOID BaseAddress)
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{
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PVOID Base;
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PPFN_NUMBER MdlPages;
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ULONG PageCount;
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PEPROCESS CurrentProcess;
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NTSTATUS Status;
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ULONG Protect;
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MEMORY_AREA *Result;
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LARGE_INTEGER BoundaryAddressMultiple;
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/* Calculate the number of pages required. */
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MdlPages = (PPFN_NUMBER)(Mdl + 1);
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PageCount = PAGE_ROUND_UP(Mdl->ByteCount + Mdl->ByteOffset) / PAGE_SIZE;
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/* Set default page protection */
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Protect = PAGE_READWRITE;
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if (CacheType == MmNonCached) Protect |= PAGE_NOCACHE;
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BoundaryAddressMultiple.QuadPart = 0;
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Base = BaseAddress;
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CurrentProcess = PsGetCurrentProcess();
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MmLockAddressSpace(&CurrentProcess->Vm);
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Status = MmCreateMemoryArea(&CurrentProcess->Vm,
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MEMORY_AREA_MDL_MAPPING,
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&Base,
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PageCount * PAGE_SIZE,
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Protect,
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&Result,
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(Base != NULL),
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0,
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BoundaryAddressMultiple);
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MmUnlockAddressSpace(&CurrentProcess->Vm);
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if (!NT_SUCCESS(Status))
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{
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if (Mdl->MdlFlags & MDL_MAPPING_CAN_FAIL)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Throw exception */
|
||||
ExRaiseStatus(STATUS_ACCESS_VIOLATION);
|
||||
ASSERT(0);
|
||||
}
|
||||
|
||||
/* Set the virtual mappings for the MDL pages. */
|
||||
if (Mdl->MdlFlags & MDL_IO_SPACE)
|
||||
{
|
||||
/* Map the pages */
|
||||
Status = MmCreateVirtualMappingUnsafe(CurrentProcess,
|
||||
Base,
|
||||
Protect,
|
||||
MdlPages,
|
||||
PageCount);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Map the pages */
|
||||
Status = MmCreateVirtualMapping(CurrentProcess,
|
||||
Base,
|
||||
Protect,
|
||||
MdlPages,
|
||||
PageCount);
|
||||
}
|
||||
|
||||
/* Check if the mapping suceeded */
|
||||
if (!NT_SUCCESS(Status))
|
||||
{
|
||||
/* If it can fail, return NULL */
|
||||
if (Mdl->MdlFlags & MDL_MAPPING_CAN_FAIL) return NULL;
|
||||
|
||||
/* Throw exception */
|
||||
ExRaiseStatus(STATUS_ACCESS_VIOLATION);
|
||||
}
|
||||
|
||||
/* Return the base */
|
||||
Base = (PVOID)((ULONG_PTR)Base + Mdl->ByteOffset);
|
||||
return Base;
|
||||
}
|
||||
|
||||
VOID
|
||||
NTAPI
|
||||
MiUnmapLockedPagesInUserSpace(IN PVOID BaseAddress,
|
||||
IN PMDL Mdl)
|
||||
{
|
||||
PMEMORY_AREA MemoryArea;
|
||||
|
||||
/* Sanity check */
|
||||
ASSERT(Mdl->Process == PsGetCurrentProcess());
|
||||
|
||||
/* Find the memory area */
|
||||
MemoryArea = MmLocateMemoryAreaByAddress(&Mdl->Process->Vm,
|
||||
BaseAddress);
|
||||
ASSERT(MemoryArea);
|
||||
|
||||
/* Free it */
|
||||
MmFreeMemoryArea(&Mdl->Process->Vm,
|
||||
MemoryArea,
|
||||
NULL,
|
||||
NULL);
|
||||
}
|
||||
|
||||
/* SYSTEM CALLS ***************************************************************/
|
||||
|
||||
NTSTATUS NTAPI
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue