From fb4868745cd9c8224e1d93066d0b4f4539be5689 Mon Sep 17 00:00:00 2001
From: Frans Kaashoek <kaashoek@30-7-101.wireless.csail.mit.edu>
Date: Wed, 7 Oct 2009 15:31:55 -0400
Subject: [PATCH] fine tune comment

---
 proc.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/proc.h b/proc.h
index 192f8ff..c790634 100644
--- a/proc.h
+++ b/proc.h
@@ -15,7 +15,9 @@
 // x86 convention is that the caller has saved them.
 // Contexts are stored at the bottom of the stack they
 // describe; the stack pointer is the address of the context.
-// The layout of the context must match the code in swtch.S.
+// The layout of the context matches the layout of the stack in swtch.S
+// at "Switch stacks" comment. eip is included  in the context 
+// so that allocproc() can easily change the return address on the stack.
 struct context {
   uint edi;
   uint esi;
-- 
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