Switch to the new page table after mapping all sections

src/memory/paging/mod.rs

@@ -104,6 +104,21 @@ impl ActivePageTable {
         temporary_page.unmap(self);
     }
 
+    pub fn switch(&mut self, new_table: InactivePageTable) -> InactivePageTable {
+        use x86_64::PhysicalAddress;
+        use x86_64::registers::control_regs;
+
+        let old_table = InactivePageTable {
+            p4_frame: Frame::containing_address(
+                control_regs::cr3().0 as usize
+            ),
+        };
+        unsafe {
+            control_regs::cr3_write(PhysicalAddress(
+                new_table.p4_frame.start_address() as u64));
+        }
+        old_table
+    }
 }
 
 pub struct InactivePageTable {
@@ -167,4 +182,7 @@ pub fn remap_the_kernel<A>(allocator: &mut A, boot_info: &BootInformation)
             }
         }
     });
+
+    let old_table = active_table.switch(new_table);
+    println!("NEW TABLE!!!");
 }