A comment

194f8bf7 · Frans Kaashoek · d10d324e · 194f8bf7
--- a/proc.c
+++ b/proc.c
@@ -327,6 +327,9 @@ forkret(void)
  release(&ptable.lock);

  if (first) {
+    // Some initialization functions must be run in the context
+    // of a regular process (e.g., they call sleep), and thus cannot 
+    // be run from main().
    first = 0;
    initlog();
  }