From 76ee483cc90c3298ebd11f0c23b8bc9b5cab4618 Mon Sep 17 00:00:00 2001
From: David Teller <david.teller@univ-orleans.fr>
Date: Tue, 25 Oct 2016 00:03:03 +0200
Subject: [PATCH] Documenting use of `enable_and_halt()`. (#21)

---
 kernel/lib.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/lib.rs b/kernel/lib.rs
index 87a9b52..5da383d 100644
--- a/kernel/lib.rs
+++ b/kernel/lib.rs
@@ -178,6 +178,7 @@ pub extern fn kmain(cpus: usize) {
             if context::switch() {
                 interrupt::enable_and_nop();
             } else {
+                // Enable interrupts, then halt CPU (to save power) until the next interrupt is actually fired.
                 interrupt::enable_and_halt();
             }
         }