Update TODO.

ed483fc8 · Silas Boyd-Wickizer · 3769917c · ed483fc8
--- a/TODO
+++ b/TODO
@@ -2,6 +2,7 @@
  - (I couldn't stop gcc from generating RIP-relative movs)
 * get something like asm labels working in clang
  - (is there a way to use address_space(256) attributes?)
+* on real hw, apicid != logical ID, but this breaks things.
 * bring mtrace back
 * finish syscall/sysret implementation
 * make uart console work over IPMI SOL