ntoskrnl/include/internal/i386/mm.h

   1 /*
   2  * kernel internal memory management definitions for x86
   3  */
   4 #pragma once
   5
   6 #ifdef _PAE_
   7 #define _MI_PAGING_LEVELS 3
   8 #else
   9 #define _MI_PAGING_LEVELS 2
  10 #endif
  11
  12 /* Memory layout base addresses */
  13 #define MI_USER_PROBE_ADDRESS                   (PVOID)0x7FFF0000
  14 #define MI_DEFAULT_SYSTEM_RANGE_START           (PVOID)0x80000000
  15 #ifndef PAE
  16 #define HYPER_SPACE                                    0xC0400000
  17 #define HYPER_SPACE_END                                0xC07FFFFF
  18 #else
  19 #define HYPER_SPACE                                    0xC0800000
  20 #define HYPER_SPACE_END                                0xC0BFFFFF
  21 #endif
  22 #define MI_SYSTEM_CACHE_WS_START                (PVOID)0xC0C00000
  23 #define MI_PAGED_POOL_START                     (PVOID)0xE1000000
  24 #define MI_NONPAGED_POOL_END                    (PVOID)0xFFBE0000
  25 #define MI_DEBUG_MAPPING                        (PVOID)0xFFBFF000
  26 #define MI_HIGHEST_SYSTEM_ADDRESS               (PVOID)0xFFFFFFFF
  27
  28 /* FIXME: These are different for PAE */
  29 #define PTE_BASE    0xC0000000
  30 #define PDE_BASE    0xC0300000
  31 #define PDE_TOP     0xC0300FFF
  32 #define PTE_TOP     0xC03FFFFF
  33
  34 #define PTE_PER_PAGE 0x400
  35 #define PDE_PER_PAGE 0x400
  36 #define PPE_PER_PAGE 1
  37
  38 /* Misc address definitions */
  39 #define MI_SYSTEM_PTE_BASE                      (PVOID)MiAddressToPte(NULL)
  40 #define MM_HIGHEST_VAD_ADDRESS \
  41     (PVOID)((ULONG_PTR)MM_HIGHEST_USER_ADDRESS - (16 * PAGE_SIZE))
  42 #define MI_MAPPING_RANGE_START              (ULONG)HYPER_SPACE
  43 #define MI_MAPPING_RANGE_END                (MI_MAPPING_RANGE_START + \
  44                                                   MI_HYPERSPACE_PTES * PAGE_SIZE)
  45 #define MI_DUMMY_PTE                        (PMMPTE)((ULONG_PTR)MI_MAPPING_RANGE_END + \
  46                                                   PAGE_SIZE)
  47 #define MI_VAD_BITMAP                       (PMMPTE)((ULONG_PTR)MI_DUMMY_PTE + \
  48                                                   PAGE_SIZE)
  49 #define MI_WORKING_SET_LIST                 (PMMPTE)((ULONG_PTR)MI_VAD_BITMAP + \
  50                                                   PAGE_SIZE)
  51
  52 /* Memory sizes */
  53 #define MI_MIN_PAGES_FOR_NONPAGED_POOL_TUNING   ((255 * _1MB) >> PAGE_SHIFT)
  54 #define MI_MIN_PAGES_FOR_SYSPTE_TUNING          ((19 * _1MB) >> PAGE_SHIFT)
  55 #define MI_MIN_PAGES_FOR_SYSPTE_BOOST           ((32 * _1MB) >> PAGE_SHIFT)
  56 #define MI_MIN_PAGES_FOR_SYSPTE_BOOST_BOOST     ((256 * _1MB) >> PAGE_SHIFT)
  57 #define MI_MIN_INIT_PAGED_POOLSIZE              (32 * _1MB)
  58 #define MI_MAX_INIT_NONPAGED_POOL_SIZE          (128 * _1MB)
  59 #define MI_MAX_NONPAGED_POOL_SIZE               (128 * _1MB)
  60 #define MI_SYSTEM_VIEW_SIZE                     (32 * _1MB)
  61 #define MI_SESSION_VIEW_SIZE                    (48 * _1MB)
  62 #define MI_SESSION_POOL_SIZE                    (16 * _1MB)
  63 #define MI_SESSION_IMAGE_SIZE                   (8 * _1MB)
  64 #define MI_SESSION_WORKING_SET_SIZE             (4 * _1MB)
  65 #define MI_SESSION_SIZE                         (MI_SESSION_VIEW_SIZE + \
  66                                                  MI_SESSION_POOL_SIZE + \
  67                                                  MI_SESSION_IMAGE_SIZE + \
  68                                                  MI_SESSION_WORKING_SET_SIZE)
  69 #define MI_MIN_ALLOCATION_FRAGMENT              (4 * _1KB)
  70 #define MI_ALLOCATION_FRAGMENT                  (64 * _1KB)
  71 #define MI_MAX_ALLOCATION_FRAGMENT              (2  * _1MB)
  72
  73 /* Misc constants */
  74 #define MM_PTE_SOFTWARE_PROTECTION_BITS         5
  75 #define MI_MIN_SECONDARY_COLORS                 8
  76 #define MI_SECONDARY_COLORS                     64
  77 #define MI_MAX_SECONDARY_COLORS                 1024
  78 #define MI_MAX_FREE_PAGE_LISTS                  4
  79 #define MI_HYPERSPACE_PTES                     (256 - 1)
  80 #define MI_ZERO_PTES                           (32)
  81 #define MI_MAX_ZERO_BITS                        21
  82 #define SESSION_POOL_LOOKASIDES                 26
  83
  84 /* MMPTE related defines */
  85 #define MM_EMPTY_PTE_LIST  ((ULONG)0xFFFFF)
  86 #define MM_EMPTY_LIST  ((ULONG_PTR)-1)
  87
  88
  89 /* Easy accessing PFN in PTE */
  90 #define PFN_FROM_PTE(v) ((v)->u.Hard.PageFrameNumber)
  91
  92 /* Macros for portable PTE modification */
  93 #define MI_MAKE_DIRTY_PAGE(x)      ((x)->u.Hard.Dirty = 1)
  94 #define MI_MAKE_CLEAN_PAGE(x)      ((x)->u.Hard.Dirty = 0)
  95 #define MI_MAKE_ACCESSED_PAGE(x)   ((x)->u.Hard.Accessed = 1)
  96 #define MI_PAGE_DISABLE_CACHE(x)   ((x)->u.Hard.CacheDisable = 1)
  97 #define MI_PAGE_WRITE_THROUGH(x)   ((x)->u.Hard.WriteThrough = 1)
  98 #define MI_PAGE_WRITE_COMBINED(x)  ((x)->u.Hard.WriteThrough = 0)
  99 #define MI_IS_PAGE_LARGE(x)        ((x)->u.Hard.LargePage == 1)
 100 #if !defined(CONFIG_SMP)
 101 #define MI_IS_PAGE_WRITEABLE(x)    ((x)->u.Hard.Write == 1)
 102 #else
 103 #define MI_IS_PAGE_WRITEABLE(x)    ((x)->u.Hard.Writable == 1)
 104 #endif
 105 #define MI_IS_PAGE_COPY_ON_WRITE(x)((x)->u.Hard.CopyOnWrite == 1)
 106 #define MI_IS_PAGE_DIRTY(x)        ((x)->u.Hard.Dirty == 1)
 107 #define MI_MAKE_OWNER_PAGE(x)      ((x)->u.Hard.Owner = 1)
 108 #if !defined(CONFIG_SMP)
 109 #define MI_MAKE_WRITE_PAGE(x)      ((x)->u.Hard.Write = 1)
 110 #else
 111 #define MI_MAKE_WRITE_PAGE(x)      ((x)->u.Hard.Writable = 1)
 112 #endif
 113
 114 /* On x86, these two are the same */
 115 #define MI_WRITE_VALID_PPE MI_WRITE_VALID_PTE
 116
 117 /* Convert an address to a corresponding PTE */
 118 #define MiAddressToPte(x) \
 119     ((PMMPTE)(((((ULONG)(x)) >> 12) << 2) + PTE_BASE))
 120
 121 /* Convert an address to a corresponding PDE */
 122 #define MiAddressToPde(x) \
 123     ((PMMPDE)(((((ULONG)(x)) >> 22) << 2) + PDE_BASE))
 124
 125 /* Convert an address to a corresponding PTE offset/index */
 126 #define MiAddressToPteOffset(x) \
 127     ((((ULONG)(x)) << 10) >> 22)
 128
 129 /* Convert an address to a corresponding PDE offset/index */
 130 #define MiAddressToPdeOffset(x) \
 131     (((ULONG)(x)) / (1024 * PAGE_SIZE))
 132 #define MiGetPdeOffset MiAddressToPdeOffset
 133
 134 /* Convert a PTE/PDE into a corresponding address */
 135 #define MiPteToAddress(_Pte) ((PVOID)((ULONG)(_Pte) << 10))
 136 #define MiPdeToAddress(_Pde) ((PVOID)((ULONG)(_Pde) << 20))
 137
 138 /* Translate between P*Es */
 139 #define MiPdeToPte(_Pde) ((PMMPTE)MiPteToAddress(_Pde))
 140 #define MiPteToPde(_Pte) ((PMMPDE)MiAddressToPte(_Pte))
 141
 142 /* Check P*E boundaries */
 143 #define MiIsPteOnPdeBoundary(PointerPte) \
 144     ((((ULONG_PTR)PointerPte) & (PAGE_SIZE - 1)) == 0)
 145
 146 //
 147 // Decodes a Prototype PTE into the underlying PTE
 148 //
 149 #define MiProtoPteToPte(x)                  \
 150     (PMMPTE)((ULONG_PTR)MmPagedPoolStart +  \
 151              (((x)->u.Proto.ProtoAddressHigh << 9) | (x)->u.Proto.ProtoAddressLow << 2))
 152
 153 //
 154 // Decodes a Prototype PTE into the underlying PTE
 155 //
 156 #define MiSubsectionPteToSubsection(x)                              \
 157     ((x)->u.Subsect.WhichPool == PagedPool) ?                       \
 158         (PMMPTE)((ULONG_PTR)MmSubsectionBase +                      \
 159                  (((x)->u.Subsect.SubsectionAddressHigh << 7) |     \
 160                    (x)->u.Subsect.SubsectionAddressLow << 3)) :     \
 161         (PMMPTE)((ULONG_PTR)MmNonPagedPoolEnd -                     \
 162                 (((x)->u.Subsect.SubsectionAddressHigh << 7) |      \
 163                   (x)->u.Subsect.SubsectionAddressLow << 3))