diff --git a/service/ptos/head/hal/kpcr.h b/service/ptos/head/hal/kpcr.h
index 7ae2e1f..1c4d934 100644
--- a/service/ptos/head/hal/kpcr.h
+++ b/service/ptos/head/hal/kpcr.h
@@ -11,6 +11,7 @@
 
 #include <ptdef.h>
 #include <ex/pool.h>
+#include <ps/thread.h>
 #include <ke/sched.h>
 #include <machine/mcb.h>
 
@@ -21,12 +22,14 @@
  * @Id:             Logical processor ID assigned by us
  * @PoolRegion:     Allocator pool region
  * @SchedQueue:     Per-core scheduler queue
+ * @CurrentThread:  Currently running thread
  * @Mcb:            Machine core block
  */
 typedef struct {
     USHORT Id;
     POOL_REGION PoolRegion;
     SCHED_QUEUE SchedQueue;
+    THREAD *CurrentThread;
     MCB Mcb;
 } KPCR;