Initialize system PTEs with arch-specific list terminator

xtoskrnl/includes/mm/amd64/pte.hh

@@ -19,6 +19,7 @@ namespace MM
     {
         private:
             STATIC MMPTE FirstSystemFreePte[MaximumPtePoolTypes];
+            STATIC ULONG_PTR ListTerminator;
             STATIC PMMPTE SystemPteBase;
             STATIC PMMPTE SystemPtesEnd[MaximumPtePoolTypes];
             STATIC PMMPTE SystemPtesStart[MaximumPtePoolTypes];
@@ -31,7 +32,7 @@ namespace MM
             STATIC XTAPI PMMPTE GetSystemPteBaseAddress(VOID);
             STATIC XTAPI PMMPTE GetValidPte(VOID);
             STATIC XTAPI VOID InitializePageTable(VOID);
-            STATIC XTAPI VOID InitializePteTemplate(VOID);
+            STATIC XTAPI VOID InitializeSystemPte(VOID);
             STATIC XTAPI VOID InitializeSystemPteSpace(VOID);
             STATIC XTAPI VOID MapP5E(PVOID StartAddress,
                                      PVOID EndAddress,

xtoskrnl/includes/mm/i686/pte.hh

@@ -19,6 +19,7 @@ namespace MM
     {
         private:
             STATIC MMPTE FirstSystemFreePte[MaximumPtePoolTypes];
+            STATIC ULONG_PTR ListTerminator;
             STATIC PMMPTE SystemPteBase;
             STATIC PMMPTE SystemPtesEnd[MaximumPtePoolTypes];
             STATIC PMMPTE SystemPtesStart[MaximumPtePoolTypes];
@@ -31,7 +32,7 @@ namespace MM
             STATIC XTAPI PMMPTE GetSystemPteBaseAddress(VOID);
             STATIC XTAPI PMMPTE GetValidPte(VOID);
             STATIC XTAPI VOID InitializePageTable(VOID);
-            STATIC XTAPI VOID InitializePteTemplate(VOID);
+            STATIC XTAPI VOID InitializeSystemPte(VOID);
             STATIC XTAPI VOID InitializeSystemPteSpace(VOID);
             STATIC XTAPI VOID MapPDE(PVOID StartAddress,
                                      PVOID EndAddress,

xtoskrnl/mm/amd64/pte.cc

@@ -154,7 +154,7 @@ MM::Pte::InitializePageTable(VOID)
 }
 
 /**
- * Initializes the PTE template.
+ * Initializes the system's PTE.
  *
  * @return This routine does not return any value.
  *
@@ -162,9 +162,13 @@ MM::Pte::InitializePageTable(VOID)
  */
 XTAPI
 VOID
-MM::Pte::InitializePteTemplate(VOID)
+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

@@ -97,6 +97,9 @@ 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/pte.cc

@@ -113,7 +113,7 @@ MM::Pte::InitializePageTable(VOID)
 }
 
 /**
- * Initializes the PTE template.
+ * Initializes the system's PTE.
  *
  * @return This routine does not return any value.
  *
@@ -121,9 +121,13 @@ MM::Pte::InitializePageTable(VOID)
  */
 XTAPI
 VOID
-MM::Pte::InitializePteTemplate(VOID)
+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/mmgr.cc

@@ -64,7 +64,7 @@ MM::Manager::InitializeMemoryManager(VOID)
     InitializeMemoryLayout();
 
     /* Initialize PTE template */
-    MM::Pte::InitializePteTemplate();
+    MM::Pte::InitializeSystemPte();
 
     /* Initialize page table */
     MM::Pte::InitializePageTable();