ntoskrnl/include/internal/amd64/mm.h

   1 /*
   2  * kernel internal memory management definitions for amd64
   3  */
   4 #pragma once
   5
   6 #define _MI_PAGING_LEVELS                   4
   7
   8 /* Memory layout base addresses */
   9 #define MI_USER_PROBE_ADDRESS           (PVOID)0x000007FFFFFF0000ULL
  10 #define MI_DEFAULT_SYSTEM_RANGE_START   (PVOID)0xFFFF080000000000ULL
  11 #define MI_REAL_SYSTEM_RANGE_START             0xFFFF800000000000ULL
  12 #define HYPER_SPACE                            0xFFFFF70000000000ULL
  13 #define HYPER_SPACE_END                        0xFFFFF77FFFFFFFFFULL
  14 #define MI_SYSTEM_CACHE_WS_START               0xFFFFF78000001000ULL
  15 #define MI_PAGED_POOL_START             (PVOID)0xFFFFF8A000000000ULL
  16 //#define MI_PAGED_POOL_END                      0xFFFFF8BFFFFFFFFFULL
  17 //#define MI_SESSION_SPACE_START                 0xFFFFF90000000000ULL
  18 #define MI_SESSION_VIEW_END                    0xFFFFF97FFF000000ULL
  19 #define MI_SESSION_SPACE_END                   0xFFFFF97FFFFFFFFFULL
  20 #define MM_SYSTEM_SPACE_START                  0xFFFFF98000000000ULL
  21 #define MI_PFN_DATABASE                        0xFFFFFA8000000000ULL
  22 #define MI_DEBUG_MAPPING                (PVOID)0xFFFFFFFF80000000ULL // FIXME
  23 #define MI_NONPAGED_POOL_END            (PVOID)0xFFFFFFFFFFBFFFFFULL
  24 #define MI_HIGHEST_SYSTEM_ADDRESS       (PVOID)0xFFFFFFFFFFFFFFFFULL
  25 #define MmSystemRangeStart              ((PVOID)MI_REAL_SYSTEM_RANGE_START)
  26
  27 /* WOW64 address definitions */
  28 #define MM_HIGHEST_USER_ADDRESS_WOW64   0x7FFEFFFF
  29 #define MM_SYSTEM_RANGE_START_WOW64     0x80000000
  30
  31 /* Misc address definitions */
  32 //#define MI_NON_PAGED_SYSTEM_START_MIN   MM_SYSTEM_SPACE_START // FIXME
  33 //#define MI_SYSTEM_PTE_START             MM_SYSTEM_SPACE_START
  34 //#define MI_SYSTEM_PTE_END               (MI_SYSTEM_PTE_START + MI_NUMBER_SYSTEM_PTES * PAGE_SIZE - 1)
  35 #define MI_SYSTEM_PTE_BASE              (PVOID)MiAddressToPte(KSEG0_BASE)
  36 #define MM_HIGHEST_VAD_ADDRESS          (PVOID)((ULONG_PTR)MM_HIGHEST_USER_ADDRESS - (16 * PAGE_SIZE))
  37 #define MI_MAPPING_RANGE_START          HYPER_SPACE
  38 #define MI_MAPPING_RANGE_END            (MI_MAPPING_RANGE_START + MI_HYPERSPACE_PTES * PAGE_SIZE)
  39 #define MI_DUMMY_PTE                        (MI_MAPPING_RANGE_END + PAGE_SIZE)
  40 #define MI_VAD_BITMAP                       (MI_DUMMY_PTE + PAGE_SIZE)
  41 #define MI_WORKING_SET_LIST                 (MI_VAD_BITMAP + PAGE_SIZE)
  42
  43 /* Memory sizes */
  44 #define MI_MIN_PAGES_FOR_NONPAGED_POOL_TUNING   ((255 * _1MB) >> PAGE_SHIFT)
  45 #define MI_MIN_PAGES_FOR_SYSPTE_TUNING          ((19 * _1MB) >> PAGE_SHIFT)
  46 #define MI_MIN_PAGES_FOR_SYSPTE_BOOST           ((32 * _1MB) >> PAGE_SHIFT)
  47 #define MI_MIN_PAGES_FOR_SYSPTE_BOOST_BOOST     ((256 * _1MB) >> PAGE_SHIFT)
  48 #define MI_MIN_INIT_PAGED_POOLSIZE              (32 * _1MB)
  49 #define MI_MAX_INIT_NONPAGED_POOL_SIZE          (128ULL * 1024 * 1024 * 1024)
  50 #define MI_MAX_NONPAGED_POOL_SIZE               (128ULL * 1024 * 1024 * 1024)
  51 #define MI_SYSTEM_VIEW_SIZE                     (16 * _1MB)
  52 #define MI_SESSION_VIEW_SIZE                    (20 * _1MB)
  53 #define MI_SESSION_POOL_SIZE                    (16 * _1MB)
  54 #define MI_SESSION_IMAGE_SIZE                   (8 * _1MB)
  55 #define MI_SESSION_WORKING_SET_SIZE             (4 * _1MB)
  56 #define MI_SESSION_SIZE                         (MI_SESSION_VIEW_SIZE + \
  57                                                  MI_SESSION_POOL_SIZE + \
  58                                                  MI_SESSION_IMAGE_SIZE + \
  59                                                  MI_SESSION_WORKING_SET_SIZE)
  60 #define MI_MIN_ALLOCATION_FRAGMENT              (4 * _1KB)
  61 #define MI_ALLOCATION_FRAGMENT                  (64 * _1KB)
  62 #define MI_MAX_ALLOCATION_FRAGMENT              (2  * _1MB)
  63
  64 /* Misc constants */
  65 #define MM_PTE_SOFTWARE_PROTECTION_BITS         5
  66 #define MI_MIN_SECONDARY_COLORS                 8
  67 #define MI_SECONDARY_COLORS                     64
  68 #define MI_MAX_SECONDARY_COLORS                 1024
  69 #define MI_NUMBER_SYSTEM_PTES                   22000
  70 #define MI_MAX_FREE_PAGE_LISTS                  4
  71 #define MI_HYPERSPACE_PTES                     (256 - 1)
  72 #define MI_ZERO_PTES                           (32)
  73 #define MI_MAX_ZERO_BITS                        53
  74 #define SESSION_POOL_LOOKASIDES                 21
  75
  76 /* MMPTE related defines */
  77 #define MM_EMPTY_PTE_LIST  ((ULONG64)0xFFFFFFFF)
  78 #define MM_EMPTY_LIST  ((ULONG_PTR)-1)
  79
  80
  81 /* Easy accessing PFN in PTE */
  82 #define PFN_FROM_PTE(v) ((v)->u.Hard.PageFrameNumber)
  83 #define PFN_FROM_PDE(v) ((v)->u.Hard.PageFrameNumber)
  84 #define PFN_FROM_PPE(v) ((v)->u.Hard.PageFrameNumber)
  85 #define PFN_FROM_PXE(v) ((v)->u.Hard.PageFrameNumber)
  86
  87 /* Macros for portable PTE modification */
  88 #define MI_MAKE_DIRTY_PAGE(x)      ((x)->u.Hard.Dirty = 1)
  89 #define MI_MAKE_CLEAN_PAGE(x)      ((x)->u.Hard.Dirty = 0)
  90 #define MI_MAKE_ACCESSED_PAGE(x)   ((x)->u.Hard.Accessed = 1)
  91 #define MI_PAGE_DISABLE_CACHE(x)   ((x)->u.Hard.CacheDisable = 1)
  92 #define MI_PAGE_WRITE_THROUGH(x)   ((x)->u.Hard.WriteThrough = 1)
  93 #define MI_PAGE_WRITE_COMBINED(x)  ((x)->u.Hard.WriteThrough = 0)
  94 #define MI_IS_PAGE_LARGE(x)        ((x)->u.Hard.LargePage == 1)
  95 #if !defined(CONFIG_SMP)
  96 #define MI_IS_PAGE_WRITEABLE(x)    ((x)->u.Hard.Write == 1)
  97 #else
  98 #define MI_IS_PAGE_WRITEABLE(x)    ((x)->u.Hard.Writable == 1)
  99 #endif
 100 #define MI_IS_PAGE_COPY_ON_WRITE(x)((x)->u.Hard.CopyOnWrite == 1)
 101 #define MI_IS_PAGE_EXECUTABLE(x)   ((x)->u.Hard.NoExecute == 0)
 102 #define MI_IS_PAGE_DIRTY(x)        ((x)->u.Hard.Dirty == 1)
 103 #define MI_MAKE_OWNER_PAGE(x)      ((x)->u.Hard.Owner = 1)
 104 #if !defined(CONFIG_SMP)
 105 #define MI_MAKE_WRITE_PAGE(x)      ((x)->u.Hard.Write = 1)
 106 #else
 107 #define MI_MAKE_WRITE_PAGE(x)      ((x)->u.Hard.Writable = 1)
 108 #endif
 109
 110 /* Macros to identify the page fault reason from the error code */
 111 #define MI_IS_NOT_PRESENT_FAULT(FaultCode) !BooleanFlagOn(FaultCode, 0x1)
 112 #define MI_IS_WRITE_ACCESS(FaultCode) BooleanFlagOn(FaultCode, 0x2)
 113 #define MI_IS_INSTRUCTION_FETCH(FaultCode) BooleanFlagOn(FaultCode, 0x10)
 114
 115 /* On x64, these are the same */
 116 #define MI_WRITE_VALID_PPE MI_WRITE_VALID_PTE
 117 #define ValidKernelPpe ValidKernelPde
 118
 119 /* Convert an address to a corresponding PTE */
 120 PMMPTE
 121 FORCEINLINE
 122 _MiAddressToPte(PVOID Address)
 123 {
 124     ULONG64 Offset = (ULONG64)Address >> (PTI_SHIFT - 3);
 125     Offset &= 0xFFFFFFFFFULL << 3;
 126     return (PMMPTE)(PTE_BASE + Offset);
 127 }
 128 #define MiAddressToPte(x) _MiAddressToPte((PVOID)(x))
 129
 130 /* Convert an address to a corresponding PDE */
 131 PMMPTE
 132 FORCEINLINE
 133 _MiAddressToPde(PVOID Address)
 134 {
 135     ULONG64 Offset = (ULONG64)Address >> (PDI_SHIFT - 3);
 136     Offset &= 0x7FFFFFF << 3;
 137     return (PMMPTE)(PDE_BASE + Offset);
 138 }
 139 #define MiAddressToPde(x) _MiAddressToPde((PVOID)(x))
 140
 141 /* Convert an address to a corresponding PPE */
 142 PMMPTE
 143 FORCEINLINE
 144 MiAddressToPpe(PVOID Address)
 145 {
 146     ULONG64 Offset = (ULONG64)Address >> (PPI_SHIFT - 3);
 147     Offset &= 0x3FFFF << 3;
 148     return (PMMPTE)(PPE_BASE + Offset);
 149 }
 150
 151 /* Convert an address to a corresponding PXE */
 152 PMMPTE
 153 FORCEINLINE
 154 MiAddressToPxe(PVOID Address)
 155 {
 156     ULONG64 Offset = (ULONG64)Address >> (PXI_SHIFT - 3);
 157     Offset &= PXI_MASK << 3;
 158     return (PMMPTE)(PXE_BASE + Offset);
 159 }
 160
 161 /* Convert an address to a corresponding PTE offset/index */
 162 ULONG
 163 FORCEINLINE
 164 MiAddressToPti(PVOID Address)
 165 {
 166     return ((((ULONG64)Address) >> PTI_SHIFT) & 0x1FF);
 167 }
 168 #define MiAddressToPteOffset(x) MiAddressToPti(x) // FIXME: bad name
 169
 170 /* Convert an address to a corresponding PDE offset/index */
 171 ULONG
 172 FORCEINLINE
 173 MiAddressToPdi(PVOID Address)
 174 {
 175     return ((((ULONG64)Address) >> PDI_SHIFT) & 0x1FF);
 176 }
 177 #define MiAddressToPdeOffset(x) MiAddressToPdi(x)
 178 #define MiGetPdeOffset(x) MiAddressToPdi(x)
 179
 180 /* Convert an address to a corresponding PXE offset/index */
 181 ULONG
 182 FORCEINLINE
 183 MiAddressToPxi(PVOID Address)
 184 {
 185     return ((((ULONG64)Address) >> PXI_SHIFT) & 0x1FF);
 186 }
 187
 188 /* Convert a PTE into a corresponding address */
 189 PVOID
 190 FORCEINLINE
 191 MiPteToAddress(PMMPTE PointerPte)
 192 {
 193     /* Use signed math */
 194     return (PVOID)(((LONG64)PointerPte << 25) >> 16);
 195 }
 196
 197 /* Convert a PDE into a corresponding address */
 198 PVOID
 199 FORCEINLINE
 200 MiPdeToAddress(PMMPTE PointerPde)
 201 {
 202     /* Use signed math */
 203     return (PVOID)(((LONG64)PointerPde << 34) >> 16);
 204 }
 205
 206 /* Convert a PPE into a corresponding address */
 207 PVOID
 208 FORCEINLINE
 209 MiPpeToAddress(PMMPTE PointerPpe)
 210 {
 211     /* Use signed math */
 212     return (PVOID)(((LONG64)PointerPpe << 43) >> 16);
 213 }
 214
 215 /* Convert a PXE into a corresponding address */
 216 PVOID
 217 FORCEINLINE
 218 MiPxeToAddress(PMMPTE PointerPxe)
 219 {
 220     /* Use signed math */
 221     return (PVOID)(((LONG64)PointerPxe << 52) >> 16);
 222 }
 223
 224 /* Translate between P*Es */
 225 #define MiPdeToPte(_Pde) ((PMMPTE)MiPteToAddress(_Pde))
 226 #define MiPteToPde(_Pte) ((PMMPDE)MiAddressToPte(_Pte))
 227 #define MiPdeToPpe(_Pde) ((PMMPPE)MiAddressToPte(_Pde))
 228
 229 /* Check P*E boundaries */
 230 #define MiIsPteOnPdeBoundary(PointerPte) \
 231     ((((ULONG_PTR)PointerPte) & (PAGE_SIZE - 1)) == 0)
 232 #define MiIsPteOnPpeBoundary(PointerPte) \
 233     ((((ULONG_PTR)PointerPte) & (PDE_PER_PAGE * PAGE_SIZE - 1)) == 0)
 234 #define MiIsPteOnPxeBoundary(PointerPte) \
 235     ((((ULONG_PTR)PointerPte) & (PPE_PER_PAGE * PDE_PER_PAGE * PAGE_SIZE - 1)) == 0)
 236
 237 //
 238 // Decodes a Prototype PTE into the underlying PTE
 239 //
 240 #define MiProtoPteToPte(x)                  \
 241     (PMMPTE)(((LONG64)(x)->u.Long) >> 16) /* Sign extend 48 bits */
 242
 243 //
 244 // Decodes a Prototype PTE into the underlying PTE
 245 //
 246 #define MiSubsectionPteToSubsection(x)                              \
 247         (PMMPTE)((x)->u.Subsect.SubsectionAddress >> 16)
 248
 249 FORCEINLINE
 250 VOID
 251 MI_MAKE_SUBSECTION_PTE(
 252     _Out_ PMMPTE NewPte,
 253     _In_ PVOID Segment)
 254 {
 255     ULONG_PTR Offset;
 256
 257     /* Mark this as a prototype */
 258     NewPte->u.Long = 0;
 259     NewPte->u.Subsect.Prototype = 1;
 260
 261     /* Store the lower 48 bits of the Segment address */
 262     NewPte->u.Subsect.SubsectionAddress = ((ULONG_PTR)Segment & 0x0000FFFFFFFFFFFF);
 263 }
 264
 265 FORCEINLINE
 266 VOID
 267 MI_MAKE_PROTOTYPE_PTE(IN PMMPTE NewPte,
 268                       IN PMMPTE PointerPte)
 269 {
 270     /* Store the Address */
 271     NewPte->u.Long = (ULONG64)PointerPte << 16;
 272
 273     /* Mark this as a prototype PTE */
 274     NewPte->u.Proto.Prototype = 1;
 275
 276     ASSERT(MiProtoPteToPte(NewPte) == PointerPte);
 277 }
 278
 279 FORCEINLINE
 280 BOOLEAN
 281 MI_IS_MAPPED_PTE(PMMPTE PointerPte)
 282 {
 283     /// FIXME
 284     __debugbreak();
 285     return ((PointerPte->u.Long & 0xFFFFFC01) != 0);
 286 }
 287
 288 VOID
 289 FORCEINLINE
 290 MmInitGlobalKernelPageDirectory(VOID)
 291 {
 292     /* Nothing to do */
 293 }
 294
 295 BOOLEAN
 296 FORCEINLINE
 297 MiIsPdeForAddressValid(PVOID Address)
 298 {
 299     return ((MiAddressToPxe(Address)->u.Hard.Valid) &&
 300             (MiAddressToPpe(Address)->u.Hard.Valid) &&
 301             (MiAddressToPde(Address)->u.Hard.Valid));
 302 }
 303