[reactos] 07/09: [NTOS:MM:X64] Fix session space initialization on x64

[Timo Kreuzer]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=d55811f160a3b6e8e8867…
commit d55811f160a3b6e8e8867d1149c10799b513a637
Author:     Timo Kreuzer <timo.kreuzer(a)reactos.org>
AuthorDate: Sun Feb 4 19:19:03 2018 +0100
Commit:     Timo Kreuzer <timo.kreuzer(a)reactos.org>
CommitDate: Sun Nov 1 09:32:27 2020 +0100
    [NTOS:MM:X64] Fix session space initialization on x64
---
 ntoskrnl/include/internal/amd64/mm.h | 21 +++++++++--------
 ntoskrnl/mm/ARM3/session.c           | 13 +++++++++--
 ntoskrnl/mm/amd64/init.c             | 44 ++++++++++++++++++++++++------------
 3 files changed, 51 insertions(+), 27 deletions(-)
diff --git a/ntoskrnl/include/internal/amd64/mm.h b/ntoskrnl/include/internal/amd64/mm.h
index bfc4a4b68d1..f6c96bdc7e9 100644
--- a/ntoskrnl/include/internal/amd64/mm.h
+++ b/ntoskrnl/include/internal/amd64/mm.h
@@ -21,8 +21,8 @@
 #define MI_PAGED_POOL_START             (PVOID)0xFFFFF8A000000000ULL // 128 GB paged pool
[MiVaPagedPool]
 //#define MI_PAGED_POOL_END                    0xFFFFF8BFFFFFFFFFULL
 //#define MI_SESSION_SPACE_START               0xFFFFF90000000000ULL // 512 GB session
space [MiVaSessionSpace]
-#define MI_SESSION_VIEW_END                    0xFFFFF97FFF000000ULL
-#define MI_SESSION_SPACE_END                   0xFFFFF97FFFFFFFFFULL
+//#define MI_SESSION_VIEW_END                    0xFFFFF97FFF000000ULL
+#define MI_SESSION_SPACE_END                   0xFFFFF98000000000ULL
 #define MI_SYSTEM_CACHE_START                  0xFFFFF98000000000ULL // 1 TB system cache
(on Vista+ this is dynamic VA space)
[MiVaSystemCache,MiVaSpecialPoolPaged,MiVaSpecialPoolNonPaged]
 #define MI_SYSTEM_CACHE_END                    0xFFFFFA7FFFFFFFFFULL
 #define MI_PFN_DATABASE                        0xFFFFFA8000000000ULL // up to 5.5 TB PFN
database followed by non paged pool [MiVaPfnDatabase/MiVaNonPagedPool]
@@ -58,11 +58,11 @@
 #define MI_MIN_INIT_PAGED_POOLSIZE              (32 * _1MB)
 #define MI_MAX_INIT_NONPAGED_POOL_SIZE          (128ULL * 1024 * 1024 * 1024)
 #define MI_MAX_NONPAGED_POOL_SIZE               (128ULL * 1024 * 1024 * 1024)
-#define MI_SYSTEM_VIEW_SIZE                     (16 * _1MB)
-#define MI_SESSION_VIEW_SIZE                    (20 * _1MB)
-#define MI_SESSION_POOL_SIZE                    (16 * _1MB)
-#define MI_SESSION_IMAGE_SIZE                   (8 * _1MB)
-#define MI_SESSION_WORKING_SET_SIZE             (4 * _1MB)
+#define MI_SYSTEM_VIEW_SIZE                     (104 * _1MB)
+#define MI_SESSION_VIEW_SIZE                    (104 * _1MB)
+#define MI_SESSION_POOL_SIZE                    (64 * _1MB)
+#define MI_SESSION_IMAGE_SIZE                   (16 * _1MB)
+#define MI_SESSION_WORKING_SET_SIZE             (16 * _1MB)
 #define MI_SESSION_SIZE                         (MI_SESSION_VIEW_SIZE + \
                                                  MI_SESSION_POOL_SIZE + \
                                                  MI_SESSION_IMAGE_SIZE + \
@@ -289,9 +289,10 @@ FORCEINLINE
 BOOLEAN
 MI_IS_MAPPED_PTE(PMMPTE PointerPte)
 {
-    /// FIXME
-    __debugbreak();
-    return ((PointerPte->u.Long & 0xFFFFFC01) != 0);
+    return ((PointerPte->u.Hard.Valid != 0) ||
+            (PointerPte->u.Proto.Prototype != 0) ||
+            (PointerPte->u.Trans.Transition != 0) ||
+            (PointerPte->u.Hard.PageFrameNumber != 0));
 }
 INIT_FUNCTION
diff --git a/ntoskrnl/mm/ARM3/session.c b/ntoskrnl/mm/ARM3/session.c
index 87606239685..898dbbbaebc 100644
--- a/ntoskrnl/mm/ARM3/session.c
+++ b/ntoskrnl/mm/ARM3/session.c
@@ -603,10 +603,14 @@ NTAPI
 MiSessionCreateInternal(OUT PULONG SessionId)
 {
     PEPROCESS Process = PsGetCurrentProcess();
-    ULONG NewFlags, Flags, Size, i, Color;
+    ULONG NewFlags, Flags, i, Color;
+#if (_MI_PAGING_LEVELS < 3)
+    ULONG Size;
+#endif // (_MI_PAGING_LEVELS < 3)
+    PMMPDE PageTables = NULL;
     KIRQL OldIrql;
     PMMPTE PointerPte, SessionPte;
-    PMMPDE PointerPde, PageTables;
+    PMMPDE PointerPde;
     PMM_SESSION_SPACE SessionGlobal;
     MMPTE TempPte;
     MMPDE TempPde;
@@ -644,6 +648,7 @@ MiSessionCreateInternal(OUT PULONG SessionId)
     /* Now we should own the flag */
     ASSERT(Process->Flags & PSF_SESSION_CREATION_UNDERWAY_BIT);
+#if (_MI_PAGING_LEVELS < 3)
     /*
      * Session space covers everything from 0xA0000000 to 0xC0000000.
      * Allocate enough page tables to describe the entire region
@@ -652,6 +657,7 @@ MiSessionCreateInternal(OUT PULONG SessionId)
     PageTables = ExAllocatePoolWithTag(NonPagedPool, Size, 'tHmM');
     ASSERT(PageTables != NULL);
     RtlZeroMemory(PageTables, Size);
+#endif // (_MI_PAGING_LEVELS < 3)
     /* Lock the session ID creation mutex */
     KeAcquireGuardedMutex(&MiSessionIdMutex);
@@ -662,7 +668,9 @@ MiSessionCreateInternal(OUT PULONG SessionId)
     {
         /* We ran out of session IDs, we should expand */
         DPRINT1("Too many sessions created. Expansion not yet supported\n");
+#if (_MI_PAGING_LEVELS < 3)
         ExFreePoolWithTag(PageTables, 'tHmM');
+#endif // (_MI_PAGING_LEVELS < 3)
         return STATUS_NO_MEMORY;
     }
@@ -786,6 +794,7 @@ MiSessionCreateInternal(OUT PULONG SessionId)
     MmSessionSpace->PageTables[PointerPde - MiAddressToPde(MmSessionBase)] =
*PointerPde;
 #endif
     InitializeListHead(&MmSessionSpace->ImageList);
+
     DPRINT1("Session %lu is ready to go: 0x%p 0x%p, %lx 0x%p\n",
             *SessionId, MmSessionSpace, SessionGlobal, SessionPageDirIndex, PageTables);
diff --git a/ntoskrnl/mm/amd64/init.c b/ntoskrnl/mm/amd64/init.c
index f56816c76e4..89aace7dc15 100644
--- a/ntoskrnl/mm/amd64/init.c
+++ b/ntoskrnl/mm/amd64/init.c
@@ -15,11 +15,11 @@
 #include <debug.h>
 #include <mm/ARM3/miarm.h>
+#include <fltkernel.h>
 extern PMMPTE MmDebugPte;
 /* Helper macros */
-#define IS_ALIGNED(addr, align) (((ULONG64)(addr) & (align - 1)) == 0)
 #define IS_PAGE_ALIGNED(addr) IS_ALIGNED(addr, PAGE_SIZE)
 /* GLOBALS *****************************************************************/
@@ -62,28 +62,31 @@ VOID
 NTAPI
 MiInitializeSessionSpaceLayout(VOID)
 {
+    /* This is the entire size */
     MmSessionSize = MI_SESSION_SIZE;
-    MmSessionViewSize = MI_SESSION_VIEW_SIZE;
-    MmSessionPoolSize = MI_SESSION_POOL_SIZE;
-    MmSessionImageSize = MI_SESSION_IMAGE_SIZE;
-    MmSystemViewSize = MI_SYSTEM_VIEW_SIZE;
-    /* Set up session space */
+    /* Start with session space end */
     MiSessionSpaceEnd = (PVOID)MI_SESSION_SPACE_END;
-    /* This is where we will load Win32k.sys and the video driver */
+    /* The highest range is the session image range */
+    MmSessionImageSize = MI_SESSION_IMAGE_SIZE;
     MiSessionImageEnd = MiSessionSpaceEnd;
-    MiSessionImageStart = (PCHAR)MiSessionImageEnd - MmSessionImageSize;
+    MiSessionImageStart = (PUCHAR)MiSessionImageEnd - MmSessionImageSize;
+    ASSERT(IS_PAGE_ALIGNED(MiSessionImageStart));
+
+    /* Session working set is below the session image range */
+    MiSessionSpaceWs = (PUCHAR)MiSessionImageStart - MI_SESSION_WORKING_SET_SIZE;
-    /* The view starts right below the session working set (itself below
-     * the image area) */
-    MiSessionViewEnd = (PVOID)MI_SESSION_VIEW_END;
-    MiSessionViewStart = (PCHAR)MiSessionViewEnd - MmSessionViewSize;
+    /* Session view is below the session working set */
+    MmSessionViewSize = MI_SESSION_VIEW_SIZE;
+    MiSessionViewEnd = MiSessionSpaceWs;
+    MiSessionViewStart = (PUCHAR)MiSessionViewEnd - MmSessionViewSize;
     ASSERT(IS_PAGE_ALIGNED(MiSessionViewStart));
-    /* Session pool follows */
+    /* Session pool is below session view */
+    MmSessionPoolSize = MI_SESSION_POOL_SIZE;
     MiSessionPoolEnd = MiSessionViewStart;
-    MiSessionPoolStart = (PCHAR)MiSessionPoolEnd - MmSessionPoolSize;
+    MiSessionPoolStart = (PUCHAR)MiSessionPoolEnd - MmSessionPoolSize;
     ASSERT(IS_PAGE_ALIGNED(MiSessionPoolStart));
     /* And it all begins here */
@@ -91,12 +94,23 @@ MiInitializeSessionSpaceLayout(VOID)
     /* System view space ends at session space, so now that we know where
      * this is, we can compute the base address of system view space itself. */
-    MiSystemViewStart = (PCHAR)MmSessionBase - MmSystemViewSize;
+    MmSystemViewSize = MI_SYSTEM_VIEW_SIZE;
+    MiSystemViewStart = (PUCHAR)MmSessionBase - MmSystemViewSize;
     ASSERT(IS_PAGE_ALIGNED(MiSystemViewStart));
     /* Sanity checks */
+    ASSERT(Add2Ptr(MmSessionBase, MmSessionSize) == MiSessionSpaceEnd);
     ASSERT(MiSessionViewEnd <= MiSessionImageStart);
     ASSERT(MmSessionBase <= MiSessionPoolStart);
+
+    /* Compute the PTE addresses for all the addresses we carved out */
+    MiSessionImagePteStart = MiAddressToPte(MiSessionImageStart);
+    MiSessionImagePteEnd = MiAddressToPte(MiSessionImageEnd);
+    MiSessionBasePte = MiAddressToPte(MmSessionBase);
+    MiSessionLastPte = MiAddressToPte(MiSessionSpaceEnd);
+
+    /* Initialize the pointer to the session space structure */
+    MmSessionSpace = (PMM_SESSION_SPACE)Add2Ptr(MiSessionImageStart, 0x10000);
 }
 VOID