Index: /trunk/src/VBox/Devices/Storage/DevAHCI.cpp
===================================================================
--- /trunk/src/VBox/Devices/Storage/DevAHCI.cpp	(revision 29878)
+++ /trunk/src/VBox/Devices/Storage/DevAHCI.cpp	(revision 29879)
@@ -6894,4 +6894,7 @@
 
     /* Create the timer for command completion coalescing feature. */
+    /** @todo r=bird: Using the virtual sync clock needs some justification.
+     *        Currently not an issue as this feature isn't used by any guest
+     *        yet. */
     rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL_SYNC, ahciCccTimer, pThis,
                                 TMTIMER_FLAGS_DEFAULT_CRIT_SECT, "AHCI CCC Timer", &pThis->pHbaCccTimerR3);