diff --git a/src/system/kernel/arch/x86/paging/pae/paging.h b/src/system/kernel/arch/x86/paging/pae/paging.h
index f14b59d341..b8d72ad423 100644
--- a/src/system/kernel/arch/x86/paging/pae/paging.h
+++ b/src/system/kernel/arch/x86/paging/pae/paging.h
@@ -12,7 +12,52 @@
 #if B_HAIKU_PHYSICAL_BITS == 64
 
 
-// TODO:...
+// page directory pointer table entry bits
+#define X86_PAE_PDPTE_PRESENT			0x0000000000000001LL
+#define X86_PAE_PDPTE_WRITE_THROUGH		0x0000000000000008LL
+#define X86_PAE_PDPTE_CACHING_DISABLED	0x0000000000000010LL
+#define X86_PAE_PDPTE_ADDRESS_MASK		0x000ffffffffff000LL
+
+// page directory entry bits
+#define X86_PAE_PDE_PRESENT				0x0000000000000001LL
+#define X86_PAE_PDE_WRITABLE			0x0000000000000002LL
+#define X86_PAE_PDE_USER				0x0000000000000004LL
+#define X86_PAE_PDE_WRITE_THROUGH		0x0000000000000008LL
+#define X86_PAE_PDE_CACHING_DISABLED	0x0000000000000010LL
+#define X86_PAE_PDE_ACCESSED			0x0000000000000020LL
+#define X86_PAE_PDE_IGNORED1			0x0000000000000040LL
+#define X86_PAE_PDE_LARGE_PAGE			0x0000000000000080LL
+#define X86_PAE_PDE_IGNORED2			0x0000000000000100LL
+#define X86_PAE_PDE_IGNORED3			0x0000000000000200LL
+#define X86_PAE_PDE_IGNORED4			0x0000000000000400LL
+#define X86_PAE_PDE_IGNORED5			0x0000000000000800LL
+#define X86_PAE_PDE_ADDRESS_MASK		0x000ffffffffff000LL
+#define X86_PAE_PDE_NOT_EXECUTABLE		0x8000000000000000LL
+
+// page table entry bits
+#define X86_PAE_PTE_PRESENT				0x0000000000000001LL
+#define X86_PAE_PTE_WRITABLE			0x0000000000000002LL
+#define X86_PAE_PTE_USER				0x0000000000000004LL
+#define X86_PAE_PTE_WRITE_THROUGH		0x0000000000000008LL
+#define X86_PAE_PTE_CACHING_DISABLED	0x0000000000000010LL
+#define X86_PAE_PTE_ACCESSED			0x0000000000000020LL
+#define X86_PAE_PTE_DIRTY				0x0000000000000040LL
+#define X86_PAE_PTE_PAT					0x0000000000000080LL
+#define X86_PAE_PTE_GLOBAL				0x0000000000000100LL
+#define X86_PAE_PTE_IGNORED1			0x0000000000000200LL
+#define X86_PAE_PTE_IGNORED2			0x0000000000000400LL
+#define X86_PAE_PTE_IGNORED3			0x0000000000000800LL
+#define X86_PAE_PTE_ADDRESS_MASK		0x000ffffffffff000LL
+#define X86_PAE_PTE_NOT_EXECUTABLE		0x8000000000000000LL
+#define X86_PAE_PTE_PROTECTION_MASK		(X86_PAE_PTE_WRITABLE \
+											| X86_PAE_PTE_USER)
+#define X86_PAE_PTE_MEMORY_TYPE_MASK	(X86_PAE_PTE_WRITE_THROUGH \
+											| X86_PAE_PTE_CACHING_DISABLED)
+
+
+typedef uint64 pae_page_directory_pointer_table_entry;
+typedef uint64 pae_page_directory_entry;
+typedef uint64 pae_page_table_entry;
 
 
 #endif	// B_HAIKU_PHYSICAL_BITS == 64