1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/exec.c b/kernel/exec.c
index d62d29d..09b4bdc 100644
--- a/kernel/exec.c
+++ b/kernel/exec.c
@@ -65,6 +65,7 @@ exec(char *path, char **argv)
   uint64 oldsz = p->sz;
 
   // Allocate two pages at the next page boundary.
+  // Make the first inaccessible as a stack guard.
   // Use the second as the user stack.
   sz = PGROUNDUP(sz);
   uint64 sz1;