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[NTOS/MM] Initialize process Working set and start implementing adding entries to it
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4 changed files with 177 additions and 17 deletions
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@ -1054,6 +1054,10 @@ MI_WS_OWNER(IN PEPROCESS Process)
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(PsGetCurrentThread()->OwnsProcessWorkingSetShared)));
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}
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VOID
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NTAPI
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MiInsertInWorkingSetList(_Inout_ PMMSUPPORT Vm, _In_ PVOID Address, _In_ ULONG Protection);
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//
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// New ARM3<->RosMM PAGE Architecture
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//
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@ -1003,6 +1003,7 @@ MiInitializePfn(IN PFN_NUMBER PageFrameIndex,
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Pfn1->u3.e1.PageLocation = ActiveAndValid;
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ASSERT(Pfn1->u3.e1.Rom == 0);
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Pfn1->u3.e1.Modified = Modified;
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Pfn1->u1.WsIndex = 0;
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/* Get the page table for the PTE */
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PointerPtePte = MiAddressToPte(PointerPte);
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@ -840,6 +840,108 @@ MmCreateTeb(IN PEPROCESS Process,
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return Status;
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}
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static
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ULONG
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MiGetFirstFreeWsleIndex(_Inout_ PMMSUPPORT Vm)
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{
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PMMWSL WsList = Vm->VmWorkingSetList;
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/* Some sanity checks */
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ASSERT((WsList->FirstFree <= WsList->LastInitializedWsle) || (WsList->FirstFree == MMWSLE_NEXT_FREE_INVALID));
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ASSERT(WsList->LastEntry <= WsList->LastInitializedWsle + 1);
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/* Check if we are initializing */
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if (WsList->LastEntry == 0)
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{
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ASSERT(WsList->FirstDynamic < WsList->LastInitializedWsle);
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return WsList->FirstDynamic++;
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}
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if (WsList->FirstFree == MMWSLE_NEXT_FREE_INVALID)
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{
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if (WsList->LastEntry == WsList->LastInitializedWsle)
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{
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/* We must grow our array. Allocate a new page */
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PMMPTE PointerPte = MiAddressToPte(&WsList->Wsle[WsList->LastInitializedWsle + 1]);
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MMPTE TempPte;
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PFN_NUMBER PageFrameIndex = MiRemoveAnyPage(MI_GET_NEXT_COLOR());
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MiInitializePfn(PageFrameIndex, PointerPte, TRUE);
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MI_MAKE_HARDWARE_PTE_KERNEL(&TempPte, PointerPte, MM_READWRITE, PageFrameIndex);
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MI_WRITE_VALID_PTE(PointerPte, TempPte);
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WsList->LastInitializedWsle += PAGE_SIZE / sizeof(MMWSLE);
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/* We must insert this page in our working set ! */
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MiInsertInWorkingSetList(Vm, &WsList->Wsle[WsList->LastInitializedWsle], MM_READWRITE);
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}
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/* At this point we must be good to go */
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ASSERT(WsList->LastEntry < WsList->LastInitializedWsle);
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return ++WsList->LastEntry;
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}
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else
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{
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ULONG WsIndex = WsList->FirstFree;
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PMMWSLE WsleEntry = &WsList->Wsle[WsIndex];
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ASSERT(WsIndex < WsList->LastEntry);
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ASSERT(WsleEntry->u1.Free.MustBeZero == 0);
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ASSERT(WsleEntry->u1.Free.PreviousFree == MMWSLE_PREVIOUS_FREE_INVALID);
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ASSERT(WsleEntry->u1.Free.NextFree > WsIndex);
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if (WsleEntry->u1.Free.NextFree != MMWSLE_NEXT_FREE_INVALID)
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{
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PMMWSLE_FREE_ENTRY NextFree = &WsList->Wsle[WsleEntry->u1.Free.NextFree].u1.Free;
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ASSERT(NextFree->MustBeZero == 0);
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ASSERT(NextFree->PreviousFree == WsList->FirstFree);
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NextFree->PreviousFree = MMWSLE_PREVIOUS_FREE_INVALID;
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}
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WsList->FirstFree = WsleEntry->u1.Free.NextFree;
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return WsIndex;
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}
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}
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VOID
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NTAPI
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MiInsertInWorkingSetList(_Inout_ PMMSUPPORT Vm, _In_ PVOID Address, _In_ ULONG Protection)
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{
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ULONG WsIndex = MiGetFirstFreeWsleIndex(Vm);
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PMMWSLE WsleEntry = &Vm->VmWorkingSetList->Wsle[WsIndex];
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PMMPTE PointerPte = MiAddressToPte(Address);
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PMMPFN Pfn1 = MiGetPfnEntry(PFN_FROM_PTE(PointerPte));
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/* Make sure we got a rounded address */
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Address = ALIGN_DOWN_POINTER_BY(Address, PAGE_SIZE);
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/* Make sure we are locking the right thing */
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ASSERT(MM_ANY_WS_LOCK_HELD(PsGetCurrentThread()));
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/* The Pfn must be an active one */
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ASSERT(Pfn1->u3.e1.PageLocation == ActiveAndValid);
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WsleEntry->u1.Long = 0;
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WsleEntry->u1.VirtualAddress = Address;
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WsleEntry->u1.e1.Protection = Protection;
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/* Shared pages not supported yet */
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ASSERT(Pfn1->u1.WsIndex == 0);
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WsleEntry->u1.e1.Direct = 1;
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Pfn1->u1.WsIndex = WsIndex;
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WsleEntry->u1.e1.Valid = 1;
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Vm->WorkingSetSize += PAGE_SIZE;
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if (Vm->WorkingSetSize > Vm->PeakWorkingSetSize)
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Vm->PeakWorkingSetSize = Vm->WorkingSetSize;
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}
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VOID
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NTAPI
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MiInitializeWorkingSetList(IN PEPROCESS CurrentProcess)
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@ -848,30 +950,56 @@ MiInitializeWorkingSetList(IN PEPROCESS CurrentProcess)
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PMMPTE sysPte;
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MMPTE tempPte;
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/* Setup some bogus list data */
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MmWorkingSetList->LastEntry = CurrentProcess->Vm.MinimumWorkingSetSize;
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/* We start with the space left behind us */
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MmWorkingSetList->Wsle = (PMMWSLE)(MmWorkingSetList + 1);
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/* Which leaves us this much entries */
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MmWorkingSetList->LastInitializedWsle = ((PAGE_SIZE - sizeof(MMWSL)) / sizeof(MMWSLE)) - 1;
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/* No entry in this list yet ! */
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MmWorkingSetList->LastEntry = 0;
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MmWorkingSetList->HashTable = NULL;
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MmWorkingSetList->HashTableSize = 0;
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MmWorkingSetList->NumberOfImageWaiters = 0;
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MmWorkingSetList->Wsle = (PVOID)(ULONG_PTR)0xDEADBABEDEADBABEULL;
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MmWorkingSetList->VadBitMapHint = 1;
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MmWorkingSetList->HashTableStart = (PVOID)(ULONG_PTR)0xBADAB00BBADAB00BULL;
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MmWorkingSetList->HighestPermittedHashAddress = (PVOID)(ULONG_PTR)0xCAFEBABECAFEBABEULL;
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MmWorkingSetList->FirstFree = 1;
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MmWorkingSetList->FirstDynamic = 2;
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MmWorkingSetList->NextSlot = 3;
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MmWorkingSetList->LastInitializedWsle = 4;
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/* The rule is that the owner process is always in the FLINK of the PDE's PFN entry */
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Pfn1 = MiGetPfnEntry(CurrentProcess->Pcb.DirectoryTableBase[0] >> PAGE_SHIFT);
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ASSERT(Pfn1->u4.PteFrame == MiGetPfnEntryIndex(Pfn1));
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Pfn1->u1.Event = (PKEVENT)CurrentProcess;
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MmWorkingSetList->VadBitMapHint = 0;
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MmWorkingSetList->HashTableStart = NULL;
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MmWorkingSetList->HighestPermittedHashAddress = NULL;
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MmWorkingSetList->FirstFree = MMWSLE_NEXT_FREE_INVALID;
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MmWorkingSetList->FirstDynamic = 0;
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MmWorkingSetList->NextSlot = 0;
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/* Map the process working set in kernel space */
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/* FIXME: there should be no need */
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sysPte = MiReserveSystemPtes(1, SystemPteSpace);
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MI_MAKE_HARDWARE_PTE_KERNEL(&tempPte, sysPte, MM_READWRITE, CurrentProcess->WorkingSetPage);
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MI_WRITE_VALID_PTE(sysPte, tempPte);
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CurrentProcess->Vm.VmWorkingSetList = MiPteToAddress(sysPte);
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/* Insert the address we already know: our PDE base and the Working Set List */
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#if _MI_PAGING_LEVELS == 4
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MiInsertInWorkingSetList(&CurrentProcess->Vm, (PVOID)PXE_BASE, 0);
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#elif _MI_PAGING_LEVELS == 3
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MiInsertInWorkingSetList(&CurrentProcess->Vm, (PVOID)PPE_BASE, 0);
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#elif _MI_PAGING_LEVELS == 2
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MiInsertInWorkingSetList(&CurrentProcess->Vm, (PVOID)PDE_BASE, 0);
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#endif
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#if _MI_PAGING_LEVELS == 4
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MiInsertInWorkingSetList(&CurrentProcess->Vm, MiAddressToPpe(MmWorkingSetList), 0);
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#endif
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#if _MI_PAGING_LEVELS >= 3
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MiInsertInWorkingSetList(&CurrentProcess->Vm, MiAddressToPde(MmWorkingSetList), 0);
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#endif
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MiInsertInWorkingSetList(&CurrentProcess->Vm, MiAddressToPte(MmWorkingSetList), 0);
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MiInsertInWorkingSetList(&CurrentProcess->Vm, MmWorkingSetList, 0);
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/* The rule is that the owner process is always in the FLINK of the PDE's PFN entry */
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Pfn1 = MiGetPfnEntry(CurrentProcess->Pcb.DirectoryTableBase[0] >> PAGE_SHIFT);
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ASSERT(Pfn1->u4.PteFrame == MiGetPfnEntryIndex(Pfn1));
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ASSERT(Pfn1->u1.WsIndex == 0);
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Pfn1->u1.Event = (PKEVENT)CurrentProcess;
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/* Mark this as not initializing anymore */
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MmWorkingSetList->LastEntry = MmWorkingSetList->FirstDynamic - 1;
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}
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NTSTATUS
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@ -915,12 +1043,17 @@ MmInitializeProcessAddressSpace(IN PEPROCESS Process,
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ASSERT(Process->VadRoot.NumberGenericTableElements == 0);
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Process->VadRoot.BalancedRoot.u1.Parent = &Process->VadRoot.BalancedRoot;
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/* Lock our working set */
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MiLockProcessWorkingSet(Process, PsGetCurrentThread());
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/* Lock PFN database */
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OldIrql = MiAcquirePfnLock();
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/* Setup the PFN for the PDE base of this process */
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#ifdef _M_AMD64
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#if _MI_PAGING_LEVELS == 4
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PointerPte = MiAddressToPte(PXE_BASE);
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#elif _MI_PAGING_LEVELS == 3
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PointerPte = MiAddressToPte(PPE_BASE);
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#else
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PointerPte = MiAddressToPte(PDE_BASE);
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#endif
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@ -929,8 +1062,10 @@ MmInitializeProcessAddressSpace(IN PEPROCESS Process,
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MiInitializePfn(PageFrameNumber, PointerPte, TRUE);
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/* Do the same for hyperspace */
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#ifdef _M_AMD64
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#if _MI_PAGING_LEVELS == 4
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PointerPde = MiAddressToPxe((PVOID)HYPER_SPACE);
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#elif _MI_PAGING_LEVELS == 3
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PointerPde = MiAddressToPpe((PVOID)HYPER_SPACE);
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#else
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PointerPde = MiAddressToPde(HYPER_SPACE);
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#endif
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@ -957,6 +1092,9 @@ MmInitializeProcessAddressSpace(IN PEPROCESS Process,
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/* Release PFN lock */
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MiReleasePfnLock(OldIrql);
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/* Release the process working set */
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MiUnlockProcessWorkingSet(Process, PsGetCurrentThread());
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/* Check if there's a Section Object */
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if (SectionObject)
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{
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@ -844,6 +844,22 @@ typedef struct _MMWSLENTRY
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ULONG_PTR VirtualPageNumber: MM_PAGE_FRAME_NUMBER_SIZE;
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} MMWSLENTRY, *PMMWSLENTRY;
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typedef struct _MMWSLE_FREE_ENTRY
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{
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ULONG MustBeZero:1;
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#ifdef _WIN64
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ULONG PreviousFree: 31;
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ULONG NextFree;
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#define MMWSLE_PREVIOUS_FREE_INVALID 0x7FFFFFFF
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#define MMWSLE_NEXT_FREE_INVALID 0xFFFFFFFF
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#else
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ULONG PreviousFree: 15;
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ULONG NextFree: 16;
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#define MMWSLE_PREVIOUS_FREE_INVALID 0x7FFF
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#define MMWSLE_NEXT_FREE_INVALID 0xFFFF
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#endif
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} MMWSLE_FREE_ENTRY, *PMMWSLE_FREE_ENTRY;
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typedef struct _MMWSLE
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{
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union
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@ -851,6 +867,7 @@ typedef struct _MMWSLE
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PVOID VirtualAddress;
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ULONG_PTR Long;
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MMWSLENTRY e1;
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MMWSLE_FREE_ENTRY Free;
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} u1;
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} MMWSLE, *PMMWSLE;
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