Allocate a new double fault stack in interrupts::init

src/interrupts/mod.rs

@@ -7,6 +7,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+use memory::MemoryController;
+
 mod idt;
 
 macro_rules! save_scratch_registers {
@@ -100,7 +102,10 @@ lazy_static! {
     };
 }
 
-pub fn init() {
+pub fn init(memory_controller: &mut MemoryController) {
+    let double_fault_stack = memory_controller.alloc_stack(1)
+        .expect("could not allocate double fault stack");
+
     IDT.load();
 }
 

src/lib.rs

@@ -51,10 +51,10 @@ pub extern "C" fn rust_main(multiboot_information_address: usize) {
     enable_write_protect_bit();
 
     // set up guard page and map the heap pages
-    memory::init(boot_info);
+    let mut memory_controller = memory::init(boot_info);
 
     // initialize our IDT
-    interrupts::init();
+    interrupts::init(&mut memory_controller);
 
     fn stack_overflow() {
         stack_overflow(); // for each recursion, the return address is pushed