Begin paging module

src/memory/mod.rs

@@ -1,5 +1,6 @@
 pub use self::area_frame_allocator::AreaFrameAllocator;
 
+mod paging;
 mod area_frame_allocator;
 
 pub const PAGE_SIZE: usize = 4096;

src/memory/paging/mod.rs

@@ -0,0 +1,8 @@
+/// The paging lock must be unique. It is required for all page table operations and thus
+/// guarantees exclusive page table access.
+pub struct Lock {
+    _private: (),
+}
+
+impl !Send for Lock {}
+impl !Sync for Lock {}