ReactOS 0.4.16-dev-1946-g52006dd
Functions
MmMdl.c File Reference
#include <kmt_test.h>
Include dependency graph for MmMdl.c:

Go to the source code of this file.

Functions

static VOID TestMmAllocatePagesForMdl (VOID)
 
static VOID TestMmBuildMdlForNonPagedPool (VOID)
 
 START_TEST (MmMdl)
 

Function Documentation

◆ START_TEST()

START_TEST ( MmMdl  )

Definition at line 246 of file MmMdl.c.

247{
248 TestMmAllocatePagesForMdl();
249 TestMmBuildMdlForNonPagedPool();
250}
TestMmAllocatePagesForMdl
static VOID TestMmAllocatePagesForMdl(VOID)
Definition: MmMdl.c:13
TestMmBuildMdlForNonPagedPool
static VOID TestMmBuildMdlForNonPagedPool(VOID)
Definition: MmMdl.c:196

◆ TestMmAllocatePagesForMdl()

static VOID TestMmAllocatePagesForMdl ( VOID  )
static

Definition at line 13 of file MmMdl.c.

14{
15 PMDL Mdl;
16 PHYSICAL_ADDRESS LowAddress;
17 PHYSICAL_ADDRESS HighAddress;
18 PHYSICAL_ADDRESS SkipBytes;
19 PVOID SystemVa;
20 PMDL Mdls[32];
21 PVOID SystemVas[32];
22 ULONG i;
23 PPFN_NUMBER MdlPages;
24 ULONG MdlPageCount;
25
26 LowAddress.QuadPart = 0;
27 HighAddress.QuadPart = -1;
28 SkipBytes.QuadPart = 0;
29 /* simple allocate/free */
30 Mdl = MmAllocatePagesForMdl(LowAddress,
31 HighAddress,
32 SkipBytes,
33 2 * 1024 * 1024);
34 ok(Mdl != NULL, "MmAllocatePagesForMdl failed\n");
35 if (skip(Mdl != NULL, "No Mdl\n"))
36 return;
37 ok(MmGetMdlByteCount(Mdl) == 2 * 1024 * 1024, "Byte count: %lu\n", MmGetMdlByteCount(Mdl));
38 ok(MmGetMdlVirtualAddress(Mdl) == NULL, "Virtual address: %p\n", MmGetMdlVirtualAddress(Mdl));
39 ok(!(Mdl->MdlFlags & MDL_MAPPED_TO_SYSTEM_VA), "MdlFlags: %lx\n", Mdl->MdlFlags);
40 MdlPages = MmGetMdlPfnArray(Mdl);
41 MdlPageCount = ADDRESS_AND_SIZE_TO_SPAN_PAGES(MmGetMdlVirtualAddress(Mdl), MmGetMdlByteCount(Mdl));
42 ok(MdlPageCount == 2 * 1024 * 1024 / PAGE_SIZE, "MdlPageCount = %lu\n", MdlPageCount);
43 for (i = 0; i < MdlPageCount; i++)
44 {
45 ok(MdlPages[i] != 0 && MdlPages[i] != (PFN_NUMBER)-1,
46 "MdlPages[%lu] = 0x%I64x\n", i, (ULONGLONG)MdlPages[i]);
47 }
48 MmFreePagesFromMdl(Mdl);
49 ExFreePoolWithTag(Mdl, 0);
50
51 /* Now map/unmap it */
52 Mdl = MmAllocatePagesForMdl(LowAddress,
53 HighAddress,
54 SkipBytes,
55 2 * 1024 * 1024);
56 ok(Mdl != NULL, "MmAllocatePagesForMdl failed\n");
57 if (skip(Mdl != NULL, "No Mdl\n"))
58 return;
59 ok(MmGetMdlByteCount(Mdl) == 2 * 1024 * 1024, "Byte count: %lu\n", MmGetMdlByteCount(Mdl));
60 ok(MmGetMdlVirtualAddress(Mdl) == NULL, "Virtual address: %p\n", MmGetMdlVirtualAddress(Mdl));
61 ok(!(Mdl->MdlFlags & MDL_MAPPED_TO_SYSTEM_VA), "MdlFlags: %lx\n", Mdl->MdlFlags);
62 SystemVa = MmMapLockedPagesSpecifyCache(Mdl,
63 KernelMode,
64 MmCached,
65 NULL,
66 FALSE,
67 NormalPagePriority);
68 ok(SystemVa != NULL, "MmMapLockedPagesSpecifyCache failed\n");
69 if (!skip(SystemVa != NULL, "No system VA\n"))
70 {
71 ok(MmGetMdlByteCount(Mdl) == 2 * 1024 * 1024, "Byte count: %lu\n", MmGetMdlByteCount(Mdl));
72 ok(MmGetMdlVirtualAddress(Mdl) == NULL, "Virtual address: %p, System VA: %p\n", MmGetMdlVirtualAddress(Mdl), SystemVa);
73 ok(Mdl->MappedSystemVa == SystemVa, "MappedSystemVa: %p, System VA: %p\n", Mdl->MappedSystemVa, SystemVa);
74 ok((Mdl->MdlFlags & MDL_MAPPED_TO_SYSTEM_VA), "MdlFlags: %lx\n", Mdl->MdlFlags);
75 MmUnmapLockedPages(SystemVa, Mdl);
76 }
77 ok(MmGetMdlByteCount(Mdl) == 2 * 1024 * 1024, "Byte count: %lu\n", MmGetMdlByteCount(Mdl));
78 ok(MmGetMdlVirtualAddress(Mdl) == NULL, "Virtual address: %p\n", MmGetMdlVirtualAddress(Mdl));
79 ok(!(Mdl->MdlFlags & MDL_MAPPED_TO_SYSTEM_VA), "MdlFlags: %lx\n", Mdl->MdlFlags);
80 MmFreePagesFromMdl(Mdl);
81 ExFreePoolWithTag(Mdl, 0);
82
83 /* Now map it, and free without unmapping */
84 Mdl = MmAllocatePagesForMdl(LowAddress,
85 HighAddress,
86 SkipBytes,
87 2 * 1024 * 1024);
88 ok(Mdl != NULL, "MmAllocatePagesForMdl failed\n");
89 if (skip(Mdl != NULL, "No Mdl\n"))
90 return;
91 ok(MmGetMdlByteCount(Mdl) == 2 * 1024 * 1024, "Byte count: %lu\n", MmGetMdlByteCount(Mdl));
92 ok(MmGetMdlVirtualAddress(Mdl) == NULL, "Virtual address: %p\n", MmGetMdlVirtualAddress(Mdl));
93 ok(!(Mdl->MdlFlags & MDL_MAPPED_TO_SYSTEM_VA), "MdlFlags: %lx\n", Mdl->MdlFlags);
94 SystemVa = MmMapLockedPagesSpecifyCache(Mdl,
95 KernelMode,
96 MmCached,
97 NULL,
98 FALSE,
99 NormalPagePriority);
100 ok(SystemVa != NULL, "MmMapLockedPagesSpecifyCache failed\n");
101 ok(MmGetMdlByteCount(Mdl) == 2 * 1024 * 1024, "Byte count: %lu\n", MmGetMdlByteCount(Mdl));
102 ok(MmGetMdlVirtualAddress(Mdl) == NULL, "Virtual address: %p, System VA: %p\n", MmGetMdlVirtualAddress(Mdl), SystemVa);
103 ok(Mdl->MappedSystemVa == SystemVa, "MappedSystemVa: %p, System VA: %p\n", Mdl->MappedSystemVa, SystemVa);
104 ok((Mdl->MdlFlags & MDL_MAPPED_TO_SYSTEM_VA), "MdlFlags: %lx\n", Mdl->MdlFlags);
105 MmFreePagesFromMdl(Mdl);
106 ExFreePoolWithTag(Mdl, 0);
107
108 /* try to allocate 2 GB -- should succeed (possibly with fewer pages) but not map */
109 Mdl = MmAllocatePagesForMdl(LowAddress,
110 HighAddress,
111 SkipBytes,
112 2UL * 1024 * 1024 * 1024);
113 ok(Mdl != NULL, "MmAllocatePagesForMdl failed for 2 GB\n");
114 if (Mdl != NULL)
115 {
116 ok(MmGetMdlByteCount(Mdl) <= 2UL * 1024 * 1024 * 1024, "Byte count: %lu\n", MmGetMdlByteCount(Mdl));
117 ok(MmGetMdlVirtualAddress(Mdl) == NULL, "Virtual address: %p\n", MmGetMdlVirtualAddress(Mdl));
118 ok(!(Mdl->MdlFlags & MDL_MAPPED_TO_SYSTEM_VA), "MdlFlags: %lx\n", Mdl->MdlFlags);
119 MdlPages = MmGetMdlPfnArray(Mdl);
120 MdlPageCount = ADDRESS_AND_SIZE_TO_SPAN_PAGES(MmGetMdlVirtualAddress(Mdl), MmGetMdlByteCount(Mdl));
121 ok(MdlPageCount <= 2UL * 1024 * 1024 * 1024 / PAGE_SIZE, "MdlPageCount = %lu\n", MdlPageCount);
122 for (i = 0; i < MdlPageCount; i++)
123 {
124 if (MdlPages[i] == 0 ||
125 MdlPages[i] == (PFN_NUMBER)-1)
126 {
127 ok(0, "MdlPages[%lu] = 0x%I64x\n", i, (ULONGLONG)MdlPages[i]);
128 }
129 }
130 SystemVa = MmMapLockedPagesSpecifyCache(Mdl,
131 KernelMode,
132 MmCached,
133 NULL,
134 FALSE,
135 NormalPagePriority);
136#ifdef _M_IX86
137 ok(SystemVa == NULL, "MmMapLockedPagesSpecifyCache succeeded for 2 GB\n");
138#endif
139 if (SystemVa != NULL)
140 MmUnmapLockedPages(SystemVa, Mdl);
141 ok(MmGetMdlByteCount(Mdl) <= 2UL * 1024 * 1024 * 1024, "Byte count: %lu\n", MmGetMdlByteCount(Mdl));
142 ok(MmGetMdlVirtualAddress(Mdl) == NULL, "Virtual address: %p\n", MmGetMdlVirtualAddress(Mdl));
143 ok(!(Mdl->MdlFlags & MDL_MAPPED_TO_SYSTEM_VA), "MdlFlags: %lx\n", Mdl->MdlFlags);
144 MmFreePagesFromMdl(Mdl);
145 ExFreePoolWithTag(Mdl, 0);
146 }
147
148 /* now allocate and map 32 MB Mdls until we fail */
149 for (i = 0; i < sizeof(Mdls) / sizeof(Mdls[0]); i++)
150 {
151 Mdls[i] = MmAllocatePagesForMdl(LowAddress,
152 HighAddress,
153 SkipBytes,
154 32 * 1024 * 1024);
155 if (Mdls[i] == NULL)
156 {
157 trace("MmAllocatePagesForMdl failed with i = %lu\n", i);
158 break;
159 }
160 ok(MmGetMdlVirtualAddress(Mdls[i]) == NULL, "Virtual address: %p\n", MmGetMdlVirtualAddress(Mdls[i]));
161 ok(!(Mdls[i]->MdlFlags & MDL_MAPPED_TO_SYSTEM_VA), "MdlFlags: %lx\n", Mdls[i]->MdlFlags);
162 SystemVas[i] = MmMapLockedPagesSpecifyCache(Mdls[i],
163 KernelMode,
164 MmCached,
165 NULL,
166 FALSE,
167 NormalPagePriority);
168 if (SystemVas[i] == NULL)
169 {
170 ok(MmGetMdlByteCount(Mdls[i]) <= 32 * 1024 * 1024, "Byte count: %lu\n", MmGetMdlByteCount(Mdls[i]));
171 ok(MmGetMdlVirtualAddress(Mdls[i]) == NULL, "Virtual address: %p\n", MmGetMdlVirtualAddress(Mdls[i]));
172 ok(!(Mdls[i]->MdlFlags & MDL_MAPPED_TO_SYSTEM_VA), "MdlFlags: %lx\n", Mdls[i]->MdlFlags);
173 trace("MmMapLockedPagesSpecifyCache failed with i = %lu\n", i);
174 break;
175 }
176 ok(MmGetMdlByteCount(Mdls[i]) == 32 * 1024 * 1024, "Byte count: %lu\n", MmGetMdlByteCount(Mdls[i]));
177 ok(MmGetMdlVirtualAddress(Mdls[i]) == NULL, "Virtual address: %p, System VA: %p\n", MmGetMdlVirtualAddress(Mdls[i]), SystemVas[i]);
178 ok(Mdls[i]->MappedSystemVa == SystemVas[i], "MappedSystemVa: %p\n", Mdls[i]->MappedSystemVa, SystemVas[i]);
179 ok((Mdls[i]->MdlFlags & MDL_MAPPED_TO_SYSTEM_VA), "MdlFlags: %lx\n", Mdls[i]->MdlFlags);
180 }
181 for (i = 0; i < sizeof(Mdls) / sizeof(Mdls[0]); i++)
182 {
183 if (Mdls[i] == NULL)
184 break;
185 if (SystemVas[i] != NULL)
186 MmUnmapLockedPages(SystemVas[i], Mdls[i]);
187 MmFreePagesFromMdl(Mdls[i]);
188 ExFreePoolWithTag(Mdls[i], 0);
189 if (SystemVas[i] == NULL)
190 break;
191 }
192}
PFN_NUMBER
ULONG_PTR PFN_NUMBER
Definition: NtCreateProfile.c:11
trace
#define trace
Definition: atltest.h:70
ok
#define ok(value,...)
Definition: atltest.h:57
skip
#define skip(...)
Definition: atltest.h:64
NULL
#define NULL
Definition: types.h:112
FALSE
#define FALSE
Definition: types.h:117
PAGE_SIZE
#define PAGE_SIZE
Definition: env_spec_w32.h:49
i
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
MmFreePagesFromMdl
VOID NTAPI MmFreePagesFromMdl(IN PMDL Mdl)
Definition: mdlsup.c:564
MmAllocatePagesForMdl
PMDL NTAPI MmAllocatePagesForMdl(IN PHYSICAL_ADDRESS LowAddress, IN PHYSICAL_ADDRESS HighAddress, IN PHYSICAL_ADDRESS SkipBytes, IN SIZE_T TotalBytes)
Definition: mdlsup.c:489
MmMapLockedPagesSpecifyCache
PVOID NTAPI MmMapLockedPagesSpecifyCache(IN PMDL Mdl, IN KPROCESSOR_MODE AccessMode, IN MEMORY_CACHING_TYPE CacheType, IN PVOID BaseAddress, IN ULONG BugCheckOnFailure, IN ULONG Priority)
Definition: mdlsup.c:660
MmUnmapLockedPages
VOID NTAPI MmUnmapLockedPages(IN PVOID BaseAddress, IN PMDL Mdl)
Definition: mdlsup.c:837
ExFreePoolWithTag
#define ExFreePoolWithTag(_P, _T)
Definition: module.h:1109
NormalPagePriority
@ NormalPagePriority
Definition: imports.h:54
KernelMode
#define KernelMode
Definition: asm.h:38
PPFN_NUMBER
ULONG * PPFN_NUMBER
Definition: ke.h:9
ULONG
uint32_t ULONG
Definition: typedefs.h:59
ULONGLONG
uint64_t ULONGLONG
Definition: typedefs.h:67
_LARGE_INTEGER
Definition: typedefs.h:103
_LARGE_INTEGER::QuadPart
LONGLONG QuadPart
Definition: typedefs.h:114
Mdl
_In_ WDFDEVICE _In_ PVOID _In_opt_ PMDL Mdl
Definition: wdfdmatransaction.h:89
MmGetMdlByteCount
#define MmGetMdlByteCount(_Mdl)
HighAddress
_Must_inspect_result_ _In_ PHYSICAL_ADDRESS HighAddress
Definition: mmfuncs.h:226
MmGetMdlVirtualAddress
#define MmGetMdlVirtualAddress(_Mdl)
MmGetMdlPfnArray
#define MmGetMdlPfnArray(_Mdl)
ADDRESS_AND_SIZE_TO_SPAN_PAGES
#define ADDRESS_AND_SIZE_TO_SPAN_PAGES(_Va, _Size)
SkipBytes
_Must_inspect_result_ _In_ PHYSICAL_ADDRESS _In_ PHYSICAL_ADDRESS SkipBytes
Definition: mmfuncs.h:227
MmCached
@ MmCached
Definition: mmtypes.h:130
MDL_MAPPED_TO_SYSTEM_VA
#define MDL_MAPPED_TO_SYSTEM_VA
Definition: mmtypes.h:18

Referenced by START_TEST().

◆ TestMmBuildMdlForNonPagedPool()

static VOID TestMmBuildMdlForNonPagedPool ( VOID  )
static

Definition at line 196 of file MmMdl.c.

197{
198 PVOID Page;
199 PMDL Mdl;
200
201 Page = ExAllocatePoolWithTag(PagedPool, PAGE_SIZE, 'Test');
202 ok(Page != NULL, "ExAllocatePoolWithTag failed\n");
203 if (skip(Page != NULL, "No buffer\n"))
204 return;
205
206 Mdl = IoAllocateMdl(Page, PAGE_SIZE, FALSE, FALSE, NULL);
207 ok(Mdl != NULL, "IoAllocateMdl failed\n");
208 if (skip(Mdl != NULL, "No MDL\n"))
209 return;
210
211 ok((Mdl->MdlFlags & MDL_PAGES_LOCKED) == 0, "MDL locked\n");
212 ok((Mdl->MdlFlags & MDL_SOURCE_IS_NONPAGED_POOL) == 0, "MDL from non paged\n");
213
214 // This fails an assertion on Windows 8+ checked and can bugcheck Windows 10+ free.
215 if (GetNTVersion() < _WIN32_WINNT_WIN8)
216 {
217 MmBuildMdlForNonPagedPool(Mdl);
218 ok((Mdl->MdlFlags & MDL_PAGES_LOCKED) == 0, "MDL locked\n");
219 ok((Mdl->MdlFlags & MDL_SOURCE_IS_NONPAGED_POOL) != 0, "MDL from paged\n");
220 }
221
222 IoFreeMdl(Mdl);
223 ExFreePoolWithTag(Page, 'Test');
224
225 Page = ExAllocatePoolWithTag(NonPagedPool, PAGE_SIZE, 'Test');
226 ok(Page != NULL, "ExAllocatePoolWithTag failed\n");
227 if (skip(Page != NULL, "No buffer\n"))
228 return;
229
230 Mdl = IoAllocateMdl(Page, PAGE_SIZE, FALSE, FALSE, NULL);
231 ok(Mdl != NULL, "IoAllocateMdl failed\n");
232 if (skip(Mdl != NULL, "No MDL\n"))
233 return;
234
235 ok((Mdl->MdlFlags & MDL_PAGES_LOCKED) == 0, "MDL locked\n");
236 ok((Mdl->MdlFlags & MDL_SOURCE_IS_NONPAGED_POOL) == 0, "MDL from non paged\n");
237
238 MmBuildMdlForNonPagedPool(Mdl);
239 ok((Mdl->MdlFlags & MDL_PAGES_LOCKED) == 0, "MDL locked\n");
240 ok((Mdl->MdlFlags & MDL_SOURCE_IS_NONPAGED_POOL) != 0, "MDL from paged\n");
241
242 IoFreeMdl(Mdl);
243 ExFreePoolWithTag(Page, 'Test');
244}
GetNTVersion
#define GetNTVersion()
Definition: apitest.h:17
ExAllocatePoolWithTag
#define ExAllocatePoolWithTag(hernya, size, tag)
Definition: env_spec_w32.h:350
NonPagedPool
#define NonPagedPool
Definition: env_spec_w32.h:307
PagedPool
#define PagedPool
Definition: env_spec_w32.h:308
IoFreeMdl
#define IoFreeMdl
Definition: fxmdl.h:89
IoAllocateMdl
#define IoAllocateMdl
Definition: fxmdl.h:88
MmBuildMdlForNonPagedPool
VOID NTAPI MmBuildMdlForNonPagedPool(IN PMDL Mdl)
Definition: mdlsup.c:424
Page
_In_ PVOID _Out_opt_ BOOLEAN _Out_opt_ PPFN_NUMBER Page
Definition: mm.h:1304
_WIN32_WINNT_WIN8
#define _WIN32_WINNT_WIN8
Definition: sdkddkver.h:29
MDL_PAGES_LOCKED
#define MDL_PAGES_LOCKED
Definition: mmtypes.h:19
MDL_SOURCE_IS_NONPAGED_POOL
#define MDL_SOURCE_IS_NONPAGED_POOL
Definition: mmtypes.h:20

Referenced by START_TEST().