add vm.c

runoff.list

@@ -21,6 +21,7 @@ spinlock.c
 proc.h
 proc.c
 swtch.S
+vm.c
 kalloc.c
 
 # system calls

runoff.spec

@@ -27,6 +27,7 @@ even: proc.h  # mild preference
 right: proc.c   # VERY important
 
 # setjmp.S either
+# vm.c either
 # kalloc.c either
 
 # syscall.h either