add some comments

find out the hard way why user and kernel must have separate segment descriptors

1 files changed, 2 insertions, 2 deletions

diff --git a/proc.h b/proc.h
index ebc42f1..5e5d031 100644
--- a/proc.h
+++ b/proc.h
@@ -3,8 +3,8 @@
 #define SEG_KCODE 1  // kernel code
 #define SEG_KDATA 2  // kernel data+stack
 #define SEG_KCPU  3  // kernel per-cpu data
-#define SEG_UCODE 4
-#define SEG_UDATA 5
+#define SEG_UCODE 4  // user code
+#define SEG_UDATA 5  // user data+stack
 #define SEG_TSS   6  // this process's task state
 #define NSEGS     7