diff --git a/target-ppc/cpu.h b/target-ppc/cpu.h
index 068fcb24a2..351008384e 100644
--- a/target-ppc/cpu.h
+++ b/target-ppc/cpu.h
@@ -2010,6 +2010,8 @@ enum {
     PPC2_ISA207S       = 0x0000000000008000ULL,
     /* Double precision floating point conversion for signed integer 64      */
     PPC2_FP_CVT_S64    = 0x0000000000010000ULL,
+    /* Transactional Memory (ISA 2.07, Book II)                              */
+    PPC2_TM            = 0x0000000000020000ULL,
 
 #define PPC_TCG_INSNS2 (PPC2_BOOKE206 | PPC2_VSX | PPC2_PRCNTL | PPC2_DBRX | \
                         PPC2_ISA205 | PPC2_VSX207 | PPC2_PERM_ISA206 | \
@@ -2017,7 +2019,7 @@ enum {
                         PPC2_FP_CVT_ISA206 | PPC2_FP_TST_ISA206 | \
                         PPC2_BCTAR_ISA207 | PPC2_LSQ_ISA207 | \
                         PPC2_ALTIVEC_207 | PPC2_ISA207S | PPC2_DFP | \
-                        PPC2_FP_CVT_S64)
+                        PPC2_FP_CVT_S64 | PPC2_TM)
 };
 
 /*****************************************************************************/