Begin paging module

src/lib.rs

@@ -13,7 +13,7 @@
 // limitations under the License.
 
 #![feature(no_std, lang_items)]
-#![feature(const_fn, unique, core_str_ext, iter_cmp)]
+#![feature(const_fn, unique, core_str_ext, iter_cmp, optin_builtin_traits)]
 #![no_std]
 
 extern crate rlibc;

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 {}