diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def
index 8e3f7dbd76..5ba7822f27 100644
--- a/target/s390x/insn-data.def
+++ b/target/s390x/insn-data.def
@@ -699,6 +699,9 @@
     /* Implemented as nops of course.  */
     C(0xe336, PFD,     RXY_b, GIE, 0, 0, 0, 0, 0, 0)
     C(0xc602, PFDRL,   RIL_c, GIE, 0, 0, 0, 0, 0, 0)
+/* PERFORM PROCESSOR ASSIST */
+    /* Implemented as nop of course.  */
+    C(0xb2e8, PPA,     RRF_c, PPA, 0, 0, 0, 0, 0, 0)
 
 /* POPULATION COUNT */
     C(0xb9e1, POPCNT,  RRE,   PC,  0, r2_o, r1, 0, popcnt, nz64)
diff --git a/target/s390x/translate.c b/target/s390x/translate.c
index 06d56000c8..72af76df27 100644
--- a/target/s390x/translate.c
+++ b/target/s390x/translate.c
@@ -5444,6 +5444,7 @@ enum DisasInsnEnum {
 #define FAC_DAT_ENH     S390_FEAT_DAT_ENH
 #define FAC_E2          S390_FEAT_EXTENDED_TRANSLATION_2
 #define FAC_EH          S390_FEAT_STFLE_49 /* execution-hint */
+#define FAC_PPA         S390_FEAT_STFLE_49 /* processor-assist */
 #define FAC_LZRB        S390_FEAT_STFLE_53 /* load-and-zero-rightmost-byte */
 
 static const DisasInsn insn_info[] = {