Remove dead code from paging and PTE management

sdk/xtdk/amd64/mmtypes.h

@@ -142,7 +142,6 @@ typedef struct _HARDWARE_PTE
 typedef struct _MMPAGEMAP_INFO
 {
     BOOLEAN Xpa;
-    ULONGLONG EmptyPteList;
     ULONGLONG PteBase;
     ULONGLONG PdeBase;
     ULONGLONG PpeBase;

sdk/xtdk/i686/mmtypes.h

@@ -165,7 +165,6 @@ typedef union _HARDWARE_PTE
 typedef struct _MMPAGEMAP_INFO
 {
     BOOLEAN Xpa;
-    ULONG EmptyPteList;
     ULONG PteBase;
     ULONG PdeBase;
     ULONG PdiShift;

xtoskrnl/includes/mm/amd64/pagemap.hh

@@ -24,7 +24,6 @@ namespace MM
             XTAPI PMMPTE AdvancePte(IN PMMPTE Pte,
                                     IN LONG Count);
             XTAPI VOID ClearPte(IN PMMPTE PtePointer);
-            XTAPI ULONGLONG GetEmptyPteList(VOID);
             XTAPI ULONG_PTR GetNextEntry(IN PMMPTE Pte);
             XTAPI PMMPTE GetNextPte(IN PMMPTE Pte);
             XTAPI BOOLEAN GetOneEntry(IN PMMPTE Pte);
@@ -42,7 +41,6 @@ namespace MM
             XTAPI PMMPTE GetPteAddress(IN PVOID Address);
             XTAPI LONG GetPteDistance(PMMPTE EndPte,
                                       PMMPTE StartPte);
-            XTAPI ULONG_PTR GetPteListTerminator(VOID);
             XTAPI ULONG GetPteOffset(IN PVOID Address);
             XTAPI ULONG GetPteSize(VOID);
             XTAPI ULONG GetPteSoftwareProtection(IN PMMPTE PtePointer);

xtoskrnl/includes/mm/amd64/paging.hh

@@ -25,7 +25,6 @@ namespace MM
                                            IN LONG Count);
             STATIC XTAPI VOID ClearPte(IN PMMPTE PtePointer);
             STATIC XTAPI VOID FlushTlb(VOID);
-            STATIC XTAPI ULONG_PTR GetEmptyPteList(VOID);
             STATIC XTAPI ULONG_PTR GetNextEntry(IN PMMPTE Pte);
             STATIC XTAPI PMMPTE GetNextPte(IN PMMPTE Pte);
             STATIC XTAPI BOOLEAN GetOneEntry(IN PMMPTE Pte);
@@ -40,7 +39,6 @@ namespace MM
             STATIC XTAPI PMMPTE GetPteAddress(IN PVOID Address);
             STATIC XTAPI LONG GetPteDistance(PMMPTE EndPte,
                                              PMMPTE StartPte);
-            STATIC XTAPI ULONG_PTR GetPteListTerminator(VOID);
             STATIC XTAPI ULONG GetPteSize(VOID);
             STATIC XTAPI ULONG GetPteSoftwareProtection(IN PMMPTE PtePointer);
             STATIC XTAPI ULONG GetPteSoftwarePrototype(IN PMMPTE PtePointer);

xtoskrnl/includes/mm/amd64/pte.hh

@@ -19,7 +19,6 @@ namespace MM
     {
         private:
             STATIC MMPTE FirstSystemFreePte[MaximumPtePoolTypes];
-            STATIC ULONG_PTR ListTerminator;
             STATIC PMMPTE SystemPteBase;
             STATIC PMMPTE SystemPtesEnd[MaximumPtePoolTypes];
             STATIC PMMPTE SystemPtesStart[MaximumPtePoolTypes];

xtoskrnl/includes/mm/i686/pagemap.hh

@@ -24,7 +24,6 @@ namespace MM
             VIRTUAL XTAPI PMMPTE AdvancePte(IN PMMPTE Pte,
                                             IN ULONG Count) = 0;
             VIRTUAL XTAPI VOID ClearPte(IN PMMPTE PtePointer) = 0;
-            XTAPI ULONG GetEmptyPteList(VOID);
             VIRTUAL XTAPI ULONG_PTR GetNextEntry(IN PMMPTE Pte) = 0;
             VIRTUAL XTAPI PMMPTE GetNextPte(IN PMMPTE Pte) = 0;
             VIRTUAL XTAPI BOOLEAN GetOneEntry(IN PMMPTE Pte) = 0;
@@ -40,7 +39,6 @@ namespace MM
             XTAPI ULONG GetPteOffset(IN PVOID Address);
             VIRTUAL XTAPI LONG GetPteDistance(PMMPTE EndPte,
                                               PMMPTE StartPte) = 0;
-            VIRTUAL XTAPI ULONG_PTR GetPteListTerminator(VOID) = 0;
             VIRTUAL XTAPI ULONG GetPteSize(VOID) = 0;
             VIRTUAL XTAPI ULONG GetPteSoftwareProtection(IN PMMPTE PtePointer) = 0;
             VIRTUAL XTAPI ULONG GetPteSoftwarePrototype(IN PMMPTE PtePointer) = 0;
@@ -82,7 +80,6 @@ namespace MM
             XTAPI ULONG_PTR GetPte(IN PMMPTE PtePointer);
             XTAPI LONG GetPteDistance(PMMPTE EndPte,
                                       PMMPTE StartPte);
-            XTAPI ULONG_PTR GetPteListTerminator(VOID);
             XTAPI ULONG GetPteSize(VOID);
             XTAPI ULONG GetPteSoftwareProtection(IN PMMPTE PtePointer);
             XTAPI ULONG GetPteSoftwarePrototype(IN PMMPTE PtePointer);
@@ -122,7 +119,6 @@ namespace MM
             XTAPI ULONG_PTR GetPte(IN PMMPTE PtePointer);
             XTAPI LONG GetPteDistance(PMMPTE EndPte,
                                       PMMPTE StartPte);
-            XTAPI ULONG_PTR GetPteListTerminator(VOID);
             XTAPI ULONG GetPteSize(VOID);
             XTAPI ULONG GetPteSoftwareProtection(IN PMMPTE PtePointer);
             XTAPI ULONG GetPteSoftwarePrototype(IN PMMPTE PtePointer);

xtoskrnl/includes/mm/i686/paging.hh

@@ -25,7 +25,6 @@ namespace MM
                                            IN LONG Count);
             STATIC XTAPI VOID ClearPte(IN PMMPTE PtePointer);
             STATIC XTAPI VOID FlushTlb(VOID);
-            STATIC XTAPI ULONG_PTR GetEmptyPteList(VOID);
             STATIC XTAPI ULONG_PTR GetNextEntry(IN PMMPTE Pte);
             STATIC XTAPI PMMPTE GetNextPte(IN PMMPTE Pte);
             STATIC XTAPI BOOLEAN GetOneEntry(IN PMMPTE Pte);
@@ -38,7 +37,6 @@ namespace MM
             STATIC XTAPI PMMPTE GetPteAddress(IN PVOID Address);
             STATIC XTAPI LONG GetPteDistance(PMMPTE EndPte,
                                              PMMPTE StartPte);
-            STATIC XTAPI ULONG_PTR GetPteListTerminator(VOID);
             STATIC XTAPI ULONG GetPteSize(VOID);
             STATIC XTAPI ULONG GetPteSoftwareProtection(IN PMMPTE PtePointer);
             STATIC XTAPI ULONG GetPteSoftwarePrototype(IN PMMPTE PtePointer);

xtoskrnl/includes/mm/i686/pte.hh

@@ -19,7 +19,6 @@ namespace MM
     {
         private:
             STATIC MMPTE FirstSystemFreePte[MaximumPtePoolTypes];
-            STATIC ULONG_PTR ListTerminator;
             STATIC PMMPTE SystemPteBase;
             STATIC PMMPTE SystemPtesEnd[MaximumPtePoolTypes];
             STATIC PMMPTE SystemPtesStart[MaximumPtePoolTypes];

xtoskrnl/mm/amd64/pagemap.cc

@@ -49,21 +49,6 @@ MM::PageMap::ClearPte(IN PMMPTE PtePointer)
     PtePointer->Long = 0;
 }
 
-/**
- * Gets the value representing an empty PTE list.
- *
- * @return This routine returns the value representing an empty PTE list.
- *
- * @since XT 1.0
- */
-XTAPI
-ULONGLONG
-MM::PageMap::GetEmptyPteList(VOID)
-{
-    /* Return empty PTE list mask */
-    return PageMapInfo.EmptyPteList;
-}
-
 /**
  * Gets the next entry in a PTE list.
  *
@@ -762,9 +747,6 @@ MM::PageMapBasic::InitializePageMapInfo(VOID)
     /* Set PML4 page map information */
     PageMapInfo.Xpa = FALSE;
 
-    /* Set PML4 empty PTE list mask */
-    PageMapInfo.EmptyPteList = 0xFFFFFFFFUI64;
-
     /* Set PML4 base addresses */
     PageMapInfo.PteBase = MM_PTE_BASE;
     PageMapInfo.PdeBase = MM_PDE_BASE;
@@ -862,9 +844,6 @@ MM::PageMapXpa::InitializePageMapInfo(VOID)
     /* Set PML5 page map information */
     PageMapInfo.Xpa = TRUE;
 
-    /* Set PML5 empty PTE list mask */
-    PageMapInfo.EmptyPteList = 0xFFFFFFFFUI64;
-
     /* Set PML5 base addresses */
     PageMapInfo.PteBase = MM_PTE_LA57_BASE;
     PageMapInfo.PdeBase = MM_PDE_LA57_BASE;

xtoskrnl/mm/amd64/pte.cc

@@ -166,9 +166,6 @@ MM::Pte::InitializeSystemPte(VOID)
 {
     /* Initialize the PTE template */
     ValidPte = {MM_PTE_VALID|MM_PTE_EXECUTE_READWRITE|MM_PTE_DIRTY|MM_PTE_ACCESSED};
-
-    /* Initialize the system's PTE list terminator */
-    ListTerminator = MM::Paging::GetPteListTerminator();
 }
 
 /**

xtoskrnl/mm/data.cc

@@ -97,9 +97,6 @@ MMPFNLIST MM::Pfn::ZeroedPagesList = {0, ZeroedPageList, MAXULONG_PTR, MAXULONG_
 /* Array of lists for available System PTEs, separated by pool type */
 MMPTE MM::Pte::FirstSystemFreePte[MaximumPtePoolTypes];
 
-/* PTE list terminator */
-ULONG_PTR MM::Pte::ListTerminator;
-
 /* Virtual base address of the System PTE space */
 PMMPTE MM::Pte::SystemPteBase;
 

xtoskrnl/mm/i686/pagemap.cc

@@ -9,21 +9,6 @@
 #include <xtos.hh>
 
 
-/**
- * Gets the value representing an empty PTE list.
- *
- * @return This routine returns the value representing an empty PTE list.
- *
- * @since XT 1.0
- */
-XTAPI
-ULONG
-MM::PageMap::GetEmptyPteList(VOID)
-{
-    /* Return empty PTE list mask */
-    return PageMapInfo.EmptyPteList;
-}
-
 /**
  * Gets the address of the PDE (Page Directory Entry), that maps given address.
  *
@@ -340,21 +325,6 @@ MM::PageMapBasic::GetPteDistance(PMMPTE EndPte,
     return ((ULONG_PTR)EndPte - (ULONG_PTR)StartPte) / sizeof(MMPML2_PTE);
 }
 
-/**
- * Gets the terminator value for a PTE list (PML2).
- *
- * @return This routine returns the terminator value for a PTE list.
- *
- * @since XT 1.0
- */
-XTAPI
-ULONG_PTR
-MM::PageMapBasic::GetPteListTerminator(VOID)
-{
-    /* Return PTE list terminator value for PML2 */
-    return 0xFFFFF;
-}
-
 /**
  * Gets the size of a PTE for basic paging (PML2).
  *
@@ -456,9 +426,6 @@ MM::PageMapBasic::InitializePageMapInfo(VOID)
     /* Set PML2 page map information */
     PageMapInfo.Xpa = FALSE;
 
-    /* Set PML2 empty PTE list mask */
-    PageMapInfo.EmptyPteList = (ULONG)0xFFFFF;
-
     /* Set PML2 base addresses */
     PageMapInfo.PteBase = MM_PTE_BASE;
     PageMapInfo.PdeBase = MM_PDE_LEGACY_BASE;
@@ -828,21 +795,6 @@ MM::PageMapXpa::GetPteDistance(PMMPTE EndPte,
     return ((ULONG_PTR)EndPte - (ULONG_PTR)StartPte) / sizeof(MMPML3_PTE);
 }
 
-/**
- * Gets the terminator value for a PTE list (PML3).
- *
- * @return This routine returns the terminator value for a PTE list.
- *
- * @since XT 1.0
- */
-XTAPI
-ULONG_PTR
-MM::PageMapXpa::GetPteListTerminator(VOID)
-{
-    /* Return PTE list terminator value for PML3 */
-    return 0xFFFFFFFF;
-}
-
 /**
  * Gets the size of a PTE for XPA paging (PML3).
  *
@@ -944,9 +896,6 @@ MM::PageMapXpa::InitializePageMapInfo(VOID)
     /* Set PML3 page map information */
     PageMapInfo.Xpa = TRUE;
 
-    /* Set PML3 empty PTE list mask */
-    PageMapInfo.EmptyPteList = (ULONG)0xFFFFFFFF;
-
     /* Set PML3 base addresses */
     PageMapInfo.PteBase = MM_PTE_BASE;
     PageMapInfo.PdeBase = MM_PDE_BASE;

xtoskrnl/mm/i686/pte.cc

@@ -125,9 +125,6 @@ MM::Pte::InitializeSystemPte(VOID)
 {
     /* Initialize the PTE template */
     ValidPte = {{MM_PTE_VALID|MM_PTE_EXECUTE_READWRITE|MM_PTE_DIRTY|MM_PTE_ACCESSED}};
-
-    /* Initialize the system's PTE list terminator */
-    ListTerminator = MM::Paging::GetPteListTerminator();
 }
 
 /**

xtoskrnl/mm/paging.cc

@@ -101,21 +101,6 @@ MM::Paging::FlushTlb(VOID)
     }
 }
 
-/**
- * Gets the value representing an empty PTE list.
- *
- * @return This routine returns the value representing an empty PTE list.
- *
- * @since XT 1.0
- */
-XTAPI
-ULONG_PTR
-MM::Paging::GetEmptyPteList(VOID)
-{
-    /* Return empty PTE list mask */
-    return (ULONG_PTR)PmlRoutines->GetEmptyPteList();
-}
-
 /**
  * Gets the next entry in a PTE list.
  *
@@ -351,21 +336,6 @@ MM::Paging::GetPteDistance(PMMPTE EndPte,
     return PmlRoutines->GetPteDistance(EndPte, StartPte);
 }
 
-/**
- * Gets the terminator value for a PTE list.
- *
- * @return This routine returns the terminator value for a PTE list.
- *
- * @since XT 1.0
- */
-XTAPI
-ULONG_PTR
-MM::Paging::GetPteListTerminator(VOID)
-{
-    /* Return PTE list terminator value */
-    return PmlRoutines->GetPteListTerminator();
-}
-
 /**
  * Gets the size of a PTE.
  *