Index: sys/powerpc/include/pcb.h
===================================================================
--- sys/powerpc/include/pcb.h
+++ sys/powerpc/include/pcb.h
@@ -56,6 +56,7 @@
 #define	PCB_VEC		0x4	/* Process had Altivec initialized */
 #define	PCB_VSX		0x8	/* Process had VSX initialized */
 #define	PCB_CDSCR	0x10	/* Process had Custom DSCR initialized */
+#define	PCB_HTM		0x20	/* Process had HTM initialized */
 	struct fpu {
 		union {
 			double fpr;
@@ -73,6 +74,11 @@
 	} pcb_vec __aligned(16);	/* Vector processor */
 	unsigned int	pcb_veccpu;		/* which CPU had our vector
 							stuff. */
+	struct htm {
+		uint64_t tfhar;
+		uint64_t texasr;
+		uint64_t tfiar;
+	} pcb_htm;
 
 	union {
 		struct {
Index: sys/powerpc/include/pcpu.h
===================================================================
--- sys/powerpc/include/pcpu.h
+++ sys/powerpc/include/pcpu.h
@@ -45,6 +45,7 @@
 	struct pmap	*pc_curpmap;		/* current pmap */	\
 	struct thread	*pc_fputhread;		/* current fpu user */  \
 	struct thread	*pc_vecthread;		/* current vec user */  \
+	struct thread	*pc_htmthread;		/* current htm user */  \
 	uintptr_t	pc_hwref;					\
 	int		pc_bsp;						\
 	volatile int	pc_awake;					\