554 lines
22 KiB
C
554 lines
22 KiB
C
/*++
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Copyright (c) 1989 Microsoft Corporation
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Module Name:
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miglobal.c
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Abstract:
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This module contains the private global storage for the memory management subsystem.
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Author:
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Lou Perazzoli (loup) 6-Apr-1989
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--*/
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#include "mi.h"
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PVOID MmHighestUserAddress;// Highest user address;
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PVOID MmSystemRangeStart;// Start of system address range.
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ULONG_PTR MmUserProbeAddress;// User probe address;
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ULONG_PTR MmVirtualBias;// Virtual bias applied during the loading of the kernel image.
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ULONG MmSecondaryColors;// Number of secondary colors, based on level 2 d cache size.
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ULONG MmProcessColorSeed = 0x12345678;// The starting color index seed, incremented at each process creation.
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PFN_COUNT MmNumberOfPhysicalPages;// Total number of physical pages available on the system.
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PFN_NUMBER MmLowestPhysicalPage = (PFN_NUMBER)-1;// Lowest physical page number in the system.
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PFN_NUMBER MmHighestPhysicalPage;// Highest physical page number in the system.
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PFN_NUMBER MmHighestPossiblePhysicalPage;// Highest possible physical page number in the system.
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// Total number of available pages in the system.
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// This is the sum of the pages on the zeroed, free and standby lists.
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PFN_COUNT MmAvailablePages;
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PFN_NUMBER MmThrottleTop;
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PFN_NUMBER MmThrottleBottom;
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MMINFO_COUNTERS MmInfoCounters;// System wide memory management statistics block.
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// Total number of physical pages which would be usable if every process was at its minimum working set size.
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// This value is initialized at system initialization to MmAvailablePages - MM_FLUID_PHYSICAL_PAGES.
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// Every time a thread is created, the kernel stack is subtracted from
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// this and every time a process is created, the minimum working set is subtracted from this.
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// If the value would become negative, the operation (create process/kernel stack/ adjust working set) fails.
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// The PFN LOCK must be owned to manipulate this value.
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SPFN_NUMBER MmResidentAvailablePages;
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// The total number of pages which would be removed from working sets if every working set was at its minimum.
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PFN_NUMBER MmPagesAboveWsMinimum;
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// The total number of pages which would be removed from working sets
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// if every working set above its maximum was at its maximum.
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PFN_NUMBER MmPagesAboveWsMaximum;
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// The number of pages to add to a working set if there are ample
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// available pages and the working set is below its maximum.
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// If memory is becoming short and MmPagesAboveWsMinimum is greater than MmPagesAboveWsThreshold, trim working sets.
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PFN_NUMBER MmPagesAboveWsThreshold = 37;
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PFN_NUMBER MmWorkingSetSizeIncrement = 6;
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// The number of pages to extend the maximum working set size by
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// if the working set at its maximum and there are ample available pages.
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PFN_NUMBER MmWorkingSetSizeExpansion = 20;
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// The number of pages required to be freed by working set reduction before working set reduction is attempted.
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PFN_NUMBER MmWsAdjustThreshold = 45;
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// The number of pages available to allow the working set to be expanded above its maximum.
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PFN_NUMBER MmWsExpandThreshold = 90;
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// The total number of pages to reduce by working set trimming.
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PFN_NUMBER MmWsTrimReductionGoal = 29;
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// The total number of pages needed for the loader to successfully hibernate.
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PFN_NUMBER MmHiberPages = 512;
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// Registry-settable threshold for using large pages. x86 only.
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ULONG MmLargePageMinimum;
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PMMPFN MmPfnDatabase;
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MMPFNLIST MmZeroedPageListHead = {
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0, // Total
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ZeroedPageList, // ListName
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MM_EMPTY_LIST, //Flink
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MM_EMPTY_LIST // Blink
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};
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MMPFNLIST MmFreePageListHead = {
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0, // Total
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FreePageList, // ListName
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MM_EMPTY_LIST, //Flink
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MM_EMPTY_LIST // Blink
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};
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MMPFNLIST MmStandbyPageListHead = {
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0, // Total
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StandbyPageList, // ListName
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MM_EMPTY_LIST, //Flink
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MM_EMPTY_LIST // Blink
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};
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MMPFNLIST MmModifiedPageListHead = {
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0, // Total
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ModifiedPageList, // ListName
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MM_EMPTY_LIST, //Flink
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MM_EMPTY_LIST // Blink
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};
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MMPFNLIST MmModifiedNoWritePageListHead = {
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0, // Total
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ModifiedNoWritePageList, // ListName
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MM_EMPTY_LIST, //Flink
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MM_EMPTY_LIST // Blink
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};
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MMPFNLIST MmBadPageListHead = {
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0, // Total
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BadPageList, // ListName
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MM_EMPTY_LIST, //Flink
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MM_EMPTY_LIST // Blink
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};
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PMMPFNLIST MmPageLocationList[NUMBER_OF_PAGE_LISTS] = {
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&MmZeroedPageListHead,
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&MmFreePageListHead,
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&MmStandbyPageListHead,
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&MmModifiedPageListHead,
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&MmModifiedNoWritePageListHead,
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&MmBadPageListHead,
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NULL,
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NULL };
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// PMMPFNLIST MmPageLocationList[FreePageList] = &MmFreePageListHead;
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// PMMPFNLIST MmPageLocationList[ZeroedPageList] = &MmZeroedPageListHead;
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// PMMPFNLIST MmPageLocationList[StandbyPageList] = &MmStandbyPageListHead;
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// PMMPFNLIST MmPageLocationList[ModifiedPageList] = &MmModifiedPageListHead;
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// PMMPFNLIST MmPageLocationList[ModifiedNoWritePageList] = &MmModifiedNoWritePageListHead;
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// PMMPFNLIST MmPageLocationList[BadPageList] = &MmBadPageListHead;
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// PMMPFNLIST MmPageLocationList[ActiveAndValid] = NULL;
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// PMMPFNLIST MmPageLocationList[TransitionPage] = NULL;
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PMMPTE MiHighestUserPte;
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PMMPTE MiHighestUserPde;
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PMMPTE MiSessionBasePte;
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PMMPTE MiSessionLastPte;
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// Hyper space items.
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PMMPTE MmFirstReservedMappingPte;
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PMMPTE MmLastReservedMappingPte;
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PMMWSL MmWorkingSetList;
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PMMWSLE MmWsle;
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KEVENT MmAvailablePagesEvent;// Event for available pages, set means pages are available.
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KEVENT MmZeroingPageEvent;// Event for the zeroing page thread.
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// Boolean to indicate if the zeroing page thread is currently
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// active. This is set to true when the zeroing page event is
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// set and set to false when the zeroing page thread is done zeroing all the pages on the free list.
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BOOLEAN MmZeroingPageThreadActive;
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// Minimum number of free pages before zeroing page thread starts.
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PFN_NUMBER MmMinimumFreePagesToZero = 8;
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// System space sizes - MmNonPagedSystemStart to MM_NON_PAGED_SYSTEM_END
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// defines the ranges of PDEs which must be copied into a new process's address space.
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PVOID MmNonPagedSystemStart;
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LOGICAL MmProtectFreedNonPagedPool;
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LOGICAL MmDynamicPfn = FALSE;
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#if PFN_CONSISTENCY
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PMMPTE MiPfnStartPte;
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PFN_NUMBER MiPfnPtes;
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BOOLEAN MiPfnProtectionEnabled;
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PETHREAD MiPfnLockOwner;
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#endif
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#ifdef MM_BUMP_COUNTER_MAX
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SIZE_T MmResTrack[MM_BUMP_COUNTER_MAX];
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#endif
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#ifdef MM_COMMIT_COUNTER_MAX
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SIZE_T MmTrackCommit[MM_COMMIT_COUNTER_MAX];
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#endif
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// Set via the registry to identify which drivers are leaking locked pages.
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LOGICAL MmTrackLockedPages;
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// Set via the registry to identify drivers which unload without releasing resources or still have active timers, etc.
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LOGICAL MmSnapUnloads = TRUE;
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#if DBG
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PETHREAD MiExpansionLockOwner;
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#endif
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// Pool sizes.
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SIZE_T MmSizeOfNonPagedPoolInBytes;
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SIZE_T MmMaximumNonPagedPoolInBytes;
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SIZE_T MmMinimumNonPagedPoolSize = 256 * 1024; // 256k
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ULONG MmMinAdditionNonPagedPoolPerMb = 32 * 1024; // 32k
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SIZE_T MmDefaultMaximumNonPagedPool = 1024 * 1024; // 1mb
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ULONG MmMaxAdditionNonPagedPoolPerMb = 400 * 1024; //400k
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SIZE_T MmSizeOfPagedPoolInBytes = 32 * 1024 * 1024; // 32 MB.
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PFN_NUMBER MmSizeOfNonPagedMustSucceed = 4 * PAGE_SIZE; // 4 pages
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ULONG MmNumberOfSystemPtes;
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ULONG MiRequestedSystemPtes;
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ULONG MmLockPagesPercentage;
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PFN_NUMBER MmLockPagesLimit;
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PMMPTE MmFirstPteForPagedPool;
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PMMPTE MmLastPteForPagedPool;
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PMMPTE MmPagedPoolBasePde;
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// Pool bit maps and other related structures.
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PVOID MmPageAlignedPoolBase[2];
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PVOID MmNonPagedMustSucceed;
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ULONG MmExpandedPoolBitPosition;
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PFN_NUMBER MmNumberOfFreeNonPagedPool;
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ULONG MmMustSucceedPoolBitPosition;
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// MmFirstFreeSystemPte contains the offset from the Nonpaged system base to the first free system PTE.
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// Note that an offset of FFFFF indicates an empty list.
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MMPTE MmFirstFreeSystemPte[MaximumPtePoolTypes];
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// System cache sizes.
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PMMWSL MmSystemCacheWorkingSetList = (PMMWSL)MM_SYSTEM_CACHE_WORKING_SET;
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MMSUPPORT MmSystemCacheWs;
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PMMWSLE MmSystemCacheWsle;
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PVOID MmSystemCacheStart = (PVOID)MM_SYSTEM_CACHE_START;
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PVOID MmSystemCacheEnd;
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PRTL_BITMAP MmSystemCacheAllocationMap;
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PRTL_BITMAP MmSystemCacheEndingMap;
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// This value should not be greater than 256MB in a system with 1GB of system space.
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PFN_COUNT MmSizeOfSystemCacheInPages = 64 * 256; //64MB.
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// Default sizes for the system cache.
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PFN_NUMBER MmSystemCacheWsMinimum = 288;
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PFN_NUMBER MmSystemCacheWsMaximum = 350;
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// Cells to track unused thread kernel stacks to avoid TB flushes every time a thread terminates.
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ULONG MmNumberDeadKernelStacks;
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ULONG MmMaximumDeadKernelStacks = 5;
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PMMPFN MmFirstDeadKernelStack = (PMMPFN)NULL;
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// MmSystemPteBase contains the address of 1 PTE before the first free system PTE (zero indicates an empty list).
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// The value of this field does not change once set.
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PMMPTE MmSystemPteBase;
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PMMWSL MmWorkingSetList;
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PMMWSLE MmWsle;
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PMMADDRESS_NODE MmSectionBasedRoot;
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PVOID MmHighSectionBase;
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POBJECT_TYPE MmSectionObjectType;// Section object type.
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FAST_MUTEX MmSectionCommitMutex;// Section commit mutex.
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FAST_MUTEX MmSectionBasedMutex;// Section base address mutex.
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// Resource for section extension.
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ERESOURCE MmSectionExtendResource;
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ERESOURCE MmSectionExtendSetResource;
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// Pagefile creation lock.
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FAST_MUTEX MmPageFileCreationLock;
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MMDEREFERENCE_SEGMENT_HEADER MmDereferenceSegmentHeader;
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LIST_ENTRY MmUnusedSegmentList;
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KEVENT MmUnusedSegmentCleanup;
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ULONG MmUnusedSegmentCount;
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SIZE_T MmMaxUnusedSegmentPagedPoolUsage;// Maximum amount of paged pool to keep in unused segments.
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// Amount of paged pool used by unused segments.
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SIZE_T MmUnusedSegmentPagedPoolUsage;
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SIZE_T MiUnusedSegmentPagedPoolUsage;
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SIZE_T MmUnusedSegmentPagedPoolReduction;// Amount to reduce paged pool by when it starts getting low.
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SIZE_T MmMaxUnusedSegmentNonPagedPoolUsage;// Maximum amount of nonpaged pool to keep in unused segments.
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// Amount of nonpaged pool used by unused segments.
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SIZE_T MmUnusedSegmentNonPagedPoolUsage;
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SIZE_T MiUnusedSegmentNonPagedPoolUsage;
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// Amount to reduce nonpaged pool by when it starts getting low.
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SIZE_T MmUnusedSegmentNonPagedPoolReduction;
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// Unused File Cache trim level - this is the percentage of pool consumed by unused file segments.
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// The minimum is 5%, the maximum (ie: largest caching)
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// is 40%. Under 20% is almost always the correct value.
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ULONG MmUnusedSegmentTrimLevel = 18;
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MMWORKING_SET_EXPANSION_HEAD MmWorkingSetExpansionHead;
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MMPAGE_FILE_EXPANSION MmAttemptForCantExtend;
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// Paging files
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MMMOD_WRITER_LISTHEAD MmPagingFileHeader;
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MMMOD_WRITER_LISTHEAD MmMappedFileHeader;
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PMMMOD_WRITER_MDL_ENTRY MmMappedFileMdl[MM_MAPPED_FILE_MDLS]; ;
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LIST_ENTRY MmFreePagingSpaceLow;
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ULONG MmNumberOfActiveMdlEntries;
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PMMPAGING_FILE MmPagingFile[MAX_PAGE_FILES];
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ULONG MmNumberOfPagingFiles;
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KEVENT MmModifiedPageWriterEvent;
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KEVENT MmWorkingSetManagerEvent;
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KEVENT MmCollidedFlushEvent;
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// Total number of committed pages.
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SIZE_T MmTotalCommittedPages;
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// Limit on committed pages. When MmTotalCommittedPages would become
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// greater than or equal to this number the paging files must be expanded.
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SIZE_T MmTotalCommitLimit;
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SIZE_T MmTotalCommitLimitMaximum;
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// Number of pages to overcommit without expanding the paging file.
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// MmTotalCommitLimit = (total paging file space) + MmOverCommit.
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SIZE_T MmOverCommit;
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// Modified page writer.
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// Minimum number of free pages before working set trimming and aggressive modified page writing is started.
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PFN_NUMBER MmMinimumFreePages = 26;
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// Stop writing modified pages when MmFreeGoal pages exist.
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PFN_NUMBER MmFreeGoal = 100;
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// Start writing pages if more than this number of pages is on the modified page list.
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PFN_NUMBER MmModifiedPageMaximum;
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// Minimum number of modified pages required before the modified page writer is started.
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PFN_NUMBER MmModifiedPageMinimum;
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// Amount of disk space that must be free after the paging file is extended.
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ULONG MmMinimumFreeDiskSpace = 1024 * 1024;
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// Size to extend the paging file by.
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ULONG MmPageFileExtension = 128; //128 pages
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// Size to reduce the paging file by.
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ULONG MmMinimumPageFileReduction = 256; //256 pages (1mb)
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ULONG MmModifiedWriteClusterSize = MM_MAXIMUM_WRITE_CLUSTER;// Number of pages to write in a single I/O.
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ULONG MmReadClusterSize = 7;// Number of pages to read in a single I/O if possible.
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// Spin locks.
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// Spinlock which guards PFN database.
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// This spinlock is used by memory management for accessing the PFN database.
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// The I/O system makes use of it for unlocking pages during I/O completion.
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// KSPIN_LOCK MmPfnLock;
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// Spinlock which guards the working set list for the system shared address space (paged pool, system cache, pagable drivers).
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ERESOURCE MmSystemWsLock;
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PETHREAD MmSystemLockOwner;
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// Spin lock for allowing working set expansion.
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KSPIN_LOCK MmExpansionLock;
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// Spin lock for protecting hyper space access.
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// System process working set sizes.
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PFN_NUMBER MmSystemProcessWorkingSetMin = 50;
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PFN_NUMBER MmSystemProcessWorkingSetMax = 450;
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PFN_NUMBER MmMaximumWorkingSetSize;
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PFN_NUMBER MmMinimumWorkingSetSize = 20;
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ULONG MmSystemPageColor;// Page color for system working set.
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LARGE_INTEGER MmSevenMinutes = { 0, -1 };// Time constants
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// note that the following constant is initialized to five seconds, but is set to 3 on very small workstations.
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// The constant used to be called MmFiveSecondsAbsolute, but since its value changes depending on
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// the system type and size, I decided to change the name to reflect this
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LARGE_INTEGER MmWorkingSetProtectionTime = { 5 * 1000 * 1000 * 10, 0 };
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LARGE_INTEGER MmOneSecond = { (ULONG)(-1 * 1000 * 1000 * 10), -1 };
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LARGE_INTEGER MmTwentySeconds = { (ULONG)(-20 * 1000 * 1000 * 10), -1 };
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LARGE_INTEGER MmShortTime = { (ULONG)(-10 * 1000 * 10), -1 };// 10 milliseconds
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LARGE_INTEGER MmHalfSecond = { (ULONG)(-5 * 100 * 1000 * 10), -1 };
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LARGE_INTEGER Mm30Milliseconds = { (ULONG)(-30 * 1000 * 10), -1 };
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// Parameters for user mode passed up via PEB in MmCreatePeb
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ULONG MmCritsectTimeoutSeconds = 2592000;
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LARGE_INTEGER MmCriticalSectionTimeout;// Filled in by mminit.c
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SIZE_T MmHeapSegmentReserve = 1024 * 1024;
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SIZE_T MmHeapSegmentCommit = PAGE_SIZE * 2;
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SIZE_T MmHeapDeCommitTotalFreeThreshold = 64 * 1024;
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SIZE_T MmHeapDeCommitFreeBlockThreshold = PAGE_SIZE;
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// Set from ntos\config\CMDAT3.C Used by customers to disable paging of executive on machines with lots of memory.
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// Worth a few TPS on a database server.
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ULONG MmDisablePagingExecutive;
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BOOLEAN Mm64BitPhysicalAddress;
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#if DBG
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ULONG MmDebug;
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#endif
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// Map a page protection from the Pte.Protect field into a protection mask.
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ULONG MmProtectToValue[32] = {
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PAGE_NOACCESS,
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PAGE_READONLY,
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PAGE_EXECUTE,
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PAGE_EXECUTE_READ,
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PAGE_READWRITE,
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PAGE_WRITECOPY,
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PAGE_EXECUTE_READWRITE,
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PAGE_EXECUTE_WRITECOPY,
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PAGE_NOACCESS,
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PAGE_NOCACHE | PAGE_READONLY,
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PAGE_NOCACHE | PAGE_EXECUTE,
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PAGE_NOCACHE | PAGE_EXECUTE_READ,
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PAGE_NOCACHE | PAGE_READWRITE,
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PAGE_NOCACHE | PAGE_WRITECOPY,
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PAGE_NOCACHE | PAGE_EXECUTE_READWRITE,
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PAGE_NOCACHE | PAGE_EXECUTE_WRITECOPY,
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PAGE_NOACCESS,
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PAGE_GUARD | PAGE_READONLY,
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PAGE_GUARD | PAGE_EXECUTE,
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PAGE_GUARD | PAGE_EXECUTE_READ,
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PAGE_GUARD | PAGE_READWRITE,
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PAGE_GUARD | PAGE_WRITECOPY,
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PAGE_GUARD | PAGE_EXECUTE_READWRITE,
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PAGE_GUARD | PAGE_EXECUTE_WRITECOPY,
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PAGE_NOACCESS,
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PAGE_NOCACHE | PAGE_GUARD | PAGE_READONLY,
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PAGE_NOCACHE | PAGE_GUARD | PAGE_EXECUTE,
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PAGE_NOCACHE | PAGE_GUARD | PAGE_EXECUTE_READ,
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PAGE_NOCACHE | PAGE_GUARD | PAGE_READWRITE,
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PAGE_NOCACHE | PAGE_GUARD | PAGE_WRITECOPY,
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PAGE_NOCACHE | PAGE_GUARD | PAGE_EXECUTE_READWRITE,
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PAGE_NOCACHE | PAGE_GUARD | PAGE_EXECUTE_WRITECOPY
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};
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ULONG MmProtectToPteMask[32] = {
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MM_PTE_NOACCESS,
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MM_PTE_READONLY | MM_PTE_CACHE,
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MM_PTE_EXECUTE | MM_PTE_CACHE,
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MM_PTE_EXECUTE_READ | MM_PTE_CACHE,
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MM_PTE_READWRITE | MM_PTE_CACHE,
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MM_PTE_WRITECOPY | MM_PTE_CACHE,
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MM_PTE_EXECUTE_READWRITE | MM_PTE_CACHE,
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MM_PTE_EXECUTE_WRITECOPY | MM_PTE_CACHE,
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MM_PTE_NOACCESS,
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MM_PTE_NOCACHE | MM_PTE_READONLY,
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MM_PTE_NOCACHE | MM_PTE_EXECUTE,
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MM_PTE_NOCACHE | MM_PTE_EXECUTE_READ,
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MM_PTE_NOCACHE | MM_PTE_READWRITE,
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MM_PTE_NOCACHE | MM_PTE_WRITECOPY,
|
|
MM_PTE_NOCACHE | MM_PTE_EXECUTE_READWRITE,
|
|
MM_PTE_NOCACHE | MM_PTE_EXECUTE_WRITECOPY,
|
|
MM_PTE_NOACCESS,
|
|
MM_PTE_GUARD | MM_PTE_READONLY | MM_PTE_CACHE,
|
|
MM_PTE_GUARD | MM_PTE_EXECUTE | MM_PTE_CACHE,
|
|
MM_PTE_GUARD | MM_PTE_EXECUTE_READ | MM_PTE_CACHE,
|
|
MM_PTE_GUARD | MM_PTE_READWRITE | MM_PTE_CACHE,
|
|
MM_PTE_GUARD | MM_PTE_WRITECOPY | MM_PTE_CACHE,
|
|
MM_PTE_GUARD | MM_PTE_EXECUTE_READWRITE | MM_PTE_CACHE,
|
|
MM_PTE_GUARD | MM_PTE_EXECUTE_WRITECOPY | MM_PTE_CACHE,
|
|
MM_PTE_NOACCESS,
|
|
MM_PTE_NOCACHE | MM_PTE_GUARD | MM_PTE_READONLY,
|
|
MM_PTE_NOCACHE | MM_PTE_GUARD | MM_PTE_EXECUTE,
|
|
MM_PTE_NOCACHE | MM_PTE_GUARD | MM_PTE_EXECUTE_READ,
|
|
MM_PTE_NOCACHE | MM_PTE_GUARD | MM_PTE_READWRITE,
|
|
MM_PTE_NOCACHE | MM_PTE_GUARD | MM_PTE_WRITECOPY,
|
|
MM_PTE_NOCACHE | MM_PTE_GUARD | MM_PTE_EXECUTE_READWRITE,
|
|
MM_PTE_NOCACHE | MM_PTE_GUARD | MM_PTE_EXECUTE_WRITECOPY
|
|
};
|
|
|
|
// Conversion which takes a Pte.Protect and builds a new Pte.Protect which is not copy-on-write.
|
|
ULONG MmMakeProtectNotWriteCopy[32] = {
|
|
MM_NOACCESS,
|
|
MM_READONLY,
|
|
MM_EXECUTE,
|
|
MM_EXECUTE_READ,
|
|
MM_READWRITE,
|
|
MM_READWRITE, //not copy
|
|
MM_EXECUTE_READWRITE,
|
|
MM_EXECUTE_READWRITE,
|
|
MM_NOACCESS,
|
|
MM_NOCACHE | MM_READONLY,
|
|
MM_NOCACHE | MM_EXECUTE,
|
|
MM_NOCACHE | MM_EXECUTE_READ,
|
|
MM_NOCACHE | MM_READWRITE,
|
|
MM_NOCACHE | MM_READWRITE,
|
|
MM_NOCACHE | MM_EXECUTE_READWRITE,
|
|
MM_NOCACHE | MM_EXECUTE_READWRITE,
|
|
MM_NOACCESS,
|
|
MM_GUARD_PAGE | MM_READONLY,
|
|
MM_GUARD_PAGE | MM_EXECUTE,
|
|
MM_GUARD_PAGE | MM_EXECUTE_READ,
|
|
MM_GUARD_PAGE | MM_READWRITE,
|
|
MM_GUARD_PAGE | MM_READWRITE,
|
|
MM_GUARD_PAGE | MM_EXECUTE_READWRITE,
|
|
MM_GUARD_PAGE | MM_EXECUTE_READWRITE,
|
|
MM_NOACCESS,
|
|
MM_NOCACHE | MM_GUARD_PAGE | MM_READONLY,
|
|
MM_NOCACHE | MM_GUARD_PAGE | MM_EXECUTE,
|
|
MM_NOCACHE | MM_GUARD_PAGE | MM_EXECUTE_READ,
|
|
MM_NOCACHE | MM_GUARD_PAGE | MM_READWRITE,
|
|
MM_NOCACHE | MM_GUARD_PAGE | MM_READWRITE,
|
|
MM_NOCACHE | MM_GUARD_PAGE | MM_EXECUTE_READWRITE,
|
|
MM_NOCACHE | MM_GUARD_PAGE | MM_EXECUTE_READWRITE
|
|
};
|
|
|
|
// Converts a protection code to an access right for section access.
|
|
// This uses only the lower 3 bits of the 5 bit protection code.
|
|
ACCESS_MASK MmMakeSectionAccess[8] = { SECTION_MAP_READ,
|
|
SECTION_MAP_READ,
|
|
SECTION_MAP_EXECUTE,
|
|
SECTION_MAP_EXECUTE | SECTION_MAP_READ,
|
|
SECTION_MAP_WRITE,
|
|
SECTION_MAP_READ,
|
|
SECTION_MAP_EXECUTE | SECTION_MAP_WRITE,
|
|
SECTION_MAP_EXECUTE | SECTION_MAP_READ };
|
|
|
|
// Converts a protection code to an access right for file access.
|
|
// This uses only the lower 3 bits of the 5 bit protection code.
|
|
ACCESS_MASK MmMakeFileAccess[8] = { FILE_READ_DATA,
|
|
FILE_READ_DATA,
|
|
FILE_EXECUTE,
|
|
FILE_EXECUTE | FILE_READ_DATA,
|
|
FILE_WRITE_DATA | FILE_READ_DATA,
|
|
FILE_READ_DATA,
|
|
FILE_EXECUTE | FILE_WRITE_DATA | FILE_READ_DATA,
|
|
FILE_EXECUTE | FILE_READ_DATA };
|
|
|
|
MM_PAGED_POOL_INFO MmPagedPoolInfo;
|
|
|
|
// Some Hydra variables.
|
|
BOOLEAN MiHydra;
|
|
ULONG_PTR MmSessionBase;
|
|
PMM_SESSION_SPACE MmSessionSpace;
|
|
LIST_ENTRY MiSessionWsList;
|
|
ULONG_PTR MiSystemViewStart;
|
|
|
|
// Both retry level and initial count must both be initialized to the same value.
|
|
// Note that the Driver Verifier can override these.
|
|
|
|
ULONG MiIoRetryLevel = 25;
|
|
ULONG MiFaultRetries = 25;
|
|
ULONG MiUserIoRetryLevel = 10;
|
|
ULONG MiUserFaultRetries = 10;
|
|
|
|
#ifdef ALLOC_DATA_PRAGMA
|
|
#pragma data_seg("INIT")
|
|
#endif
|
|
|
|
WCHAR MmVerifyDriverBuffer[MI_SUSPECT_DRIVER_BUFFER_LENGTH];
|
|
ULONG MmVerifyDriverBufferLength = sizeof(MmVerifyDriverBuffer);
|
|
ULONG MmVerifyDriverBufferType = REG_NONE;
|
|
ULONG MmVerifyDriverLevel = (ULONG)-1;
|
|
|
|
#ifdef ALLOC_DATA_PRAGMA
|
|
#pragma data_seg()
|
|
#endif
|