2 * kernel internal memory management definitions for amd64
6 #define _MI_PAGING_LEVELS 4
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)
27 /* WOW64 address definitions */
28 #define MM_HIGHEST_USER_ADDRESS_WOW64 0x7FFEFFFF
29 #define MM_SYSTEM_RANGE_START_WOW64 0x80000000
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)
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)
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
76 /* MMPTE related defines */
77 #define MM_EMPTY_PTE_LIST ((ULONG64)0xFFFFFFFF)
78 #define MM_EMPTY_LIST ((ULONG_PTR)-1)
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)
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)
98 #define MI_IS_PAGE_WRITEABLE(x) ((x)->u.Hard.Writable == 1)
100 #define MI_IS_PAGE_COPY_ON_WRITE(x)((x)->u.Hard.CopyOnWrite == 1)
101 #define MI_IS_PAGE_DIRTY(x) ((x)->u.Hard.Dirty == 1)
102 #define MI_MAKE_OWNER_PAGE(x) ((x)->u.Hard.Owner = 1)
103 #if !defined(CONFIG_SMP)
104 #define MI_MAKE_WRITE_PAGE(x) ((x)->u.Hard.Write = 1)
106 #define MI_MAKE_WRITE_PAGE(x) ((x)->u.Hard.Writable = 1)
109 /* Macros to identify the page fault reason from the error code */
110 #define MI_IS_NOT_PRESENT_FAULT(FaultCode) !BooleanFlagOn(FaultCode, 0x1)
112 /* On x64, these are the same */
113 #define MI_WRITE_VALID_PPE MI_WRITE_VALID_PTE
114 #define ValidKernelPpe ValidKernelPde
116 /* Convert an address to a corresponding PTE */
119 _MiAddressToPte(PVOID Address
)
121 ULONG64 Offset
= (ULONG64
)Address
>> (PTI_SHIFT
- 3);
122 Offset
&= 0xFFFFFFFFFULL
<< 3;
123 return (PMMPTE
)(PTE_BASE
+ Offset
);
125 #define MiAddressToPte(x) _MiAddressToPte((PVOID)(x))
127 /* Convert an address to a corresponding PDE */
130 _MiAddressToPde(PVOID Address
)
132 ULONG64 Offset
= (ULONG64
)Address
>> (PDI_SHIFT
- 3);
133 Offset
&= 0x7FFFFFF << 3;
134 return (PMMPTE
)(PDE_BASE
+ Offset
);
136 #define MiAddressToPde(x) _MiAddressToPde((PVOID)(x))
138 /* Convert an address to a corresponding PPE */
141 MiAddressToPpe(PVOID Address
)
143 ULONG64 Offset
= (ULONG64
)Address
>> (PPI_SHIFT
- 3);
144 Offset
&= 0x3FFFF << 3;
145 return (PMMPTE
)(PPE_BASE
+ Offset
);
148 /* Convert an address to a corresponding PXE */
151 MiAddressToPxe(PVOID Address
)
153 ULONG64 Offset
= (ULONG64
)Address
>> (PXI_SHIFT
- 3);
154 Offset
&= PXI_MASK
<< 3;
155 return (PMMPTE
)(PXE_BASE
+ Offset
);
158 /* Convert an address to a corresponding PTE offset/index */
161 MiAddressToPti(PVOID Address
)
163 return ((((ULONG64
)Address
) >> PTI_SHIFT
) & 0x1FF);
165 #define MiAddressToPteOffset(x) MiAddressToPti(x) // FIXME: bad name
167 /* Convert an address to a corresponding PDE offset/index */
170 MiAddressToPdi(PVOID Address
)
172 return ((((ULONG64
)Address
) >> PDI_SHIFT
) & 0x1FF);
174 #define MiAddressToPdeOffset(x) MiAddressToPdi(x)
175 #define MiGetPdeOffset(x) MiAddressToPdi(x)
177 /* Convert an address to a corresponding PXE offset/index */
180 MiAddressToPxi(PVOID Address
)
182 return ((((ULONG64
)Address
) >> PXI_SHIFT
) & 0x1FF);
185 /* Convert a PTE into a corresponding address */
188 MiPteToAddress(PMMPTE PointerPte
)
190 /* Use signed math */
191 return (PVOID
)(((LONG64
)PointerPte
<< 25) >> 16);
194 /* Convert a PDE into a corresponding address */
197 MiPdeToAddress(PMMPTE PointerPde
)
199 /* Use signed math */
200 return (PVOID
)(((LONG64
)PointerPde
<< 34) >> 16);
203 /* Convert a PPE into a corresponding address */
206 MiPpeToAddress(PMMPTE PointerPpe
)
208 /* Use signed math */
209 return (PVOID
)(((LONG64
)PointerPpe
<< 43) >> 16);
212 /* Convert a PXE into a corresponding address */
215 MiPxeToAddress(PMMPTE PointerPxe
)
217 /* Use signed math */
218 return (PVOID
)(((LONG64
)PointerPxe
<< 52) >> 16);
221 /* Translate between P*Es */
222 #define MiPdeToPte(_Pde) ((PMMPTE)MiPteToAddress(_Pde))
223 #define MiPteToPde(_Pte) ((PMMPDE)MiAddressToPte(_Pte))
224 #define MiPdeToPpe(_Pde) ((PMMPPE)MiAddressToPte(_Pde))
226 /* Check P*E boundaries */
227 #define MiIsPteOnPdeBoundary(PointerPte) \
228 ((((ULONG_PTR)PointerPte) & (PAGE_SIZE - 1)) == 0)
229 #define MiIsPteOnPpeBoundary(PointerPte) \
230 ((((ULONG_PTR)PointerPte) & (PDE_PER_PAGE * PAGE_SIZE - 1)) == 0)
231 #define MiIsPteOnPxeBoundary(PointerPte) \
232 ((((ULONG_PTR)PointerPte) & (PPE_PER_PAGE * PDE_PER_PAGE * PAGE_SIZE - 1)) == 0)
235 // Decodes a Prototype PTE into the underlying PTE
237 #define MiProtoPteToPte(x) \
238 (PMMPTE)(((LONG64)(x)->u.Long) >> 16) /* Sign extend 48 bits */
241 // Decodes a Prototype PTE into the underlying PTE
243 #define MiSubsectionPteToSubsection(x) \
244 (PMMPTE)((x)->u.Subsect.SubsectionAddress >> 16)
248 MI_MAKE_SUBSECTION_PTE(
254 /* Mark this as a prototype */
256 NewPte
->u
.Subsect
.Prototype
= 1;
258 /* Store the lower 48 bits of the Segment address */
259 NewPte
->u
.Subsect
.SubsectionAddress
= ((ULONG_PTR
)Segment
& 0x0000FFFFFFFFFFFF);
264 MI_MAKE_PROTOTYPE_PTE(IN PMMPTE NewPte
,
265 IN PMMPTE PointerPte
)
267 /* Store the Address */
268 NewPte
->u
.Long
= (ULONG64
)PointerPte
<< 16;
270 /* Mark this as a prototype PTE */
271 NewPte
->u
.Proto
.Prototype
= 1;
273 ASSERT(MiProtoPteToPte(NewPte
) == PointerPte
);
278 MI_IS_MAPPED_PTE(PMMPTE PointerPte
)
282 return ((PointerPte
->u
.Long
& 0xFFFFFC01) != 0);
287 MmInitGlobalKernelPageDirectory(VOID
)
294 MiIsPdeForAddressValid(PVOID Address
)
296 return ((MiAddressToPxe(Address
)->u
.Hard
.Valid
) &&
297 (MiAddressToPpe(Address
)->u
.Hard
.Valid
) &&
298 (MiAddressToPde(Address
)->u
.Hard
.Valid
));