diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def
index 4c91f30fe0..f818437069 100644
--- a/target/s390x/insn-data.def
+++ b/target/s390x/insn-data.def
@@ -838,6 +838,7 @@
 #ifndef CONFIG_USER_ONLY
 /* COMPARE AND SWAP AND PURGE */
     D(0xb250, CSP,     RRE,   Z,   r1_32u, ra2, r1_P, 0, csp, 0, MO_TEUL)
+    D(0xb98a, CSPG,    RRE, DAT_ENH, r1_o, ra2, r1_P, 0, csp, 0, MO_TEQ)
 /* DIAGNOSE (KVM hypercall) */
     C(0x8300, DIAG,    RSI,   Z,   0, 0, 0, 0, diag, 0)
 /* INSERT STORAGE KEY EXTENDED */
diff --git a/target/s390x/translate.c b/target/s390x/translate.c
index 711b9c947e..737b577ce4 100644
--- a/target/s390x/translate.c
+++ b/target/s390x/translate.c
@@ -1200,6 +1200,7 @@ typedef enum DisasFacility {
     FAC_SFLE,               /* store facility list extended */
     FAC_ILA,                /* interlocked access facility 1 */
     FAC_LPP,                /* load-program-parameter */
+    FAC_DAT_ENH,            /* DAT-enhancement */
 } DisasFacility;
 
 struct DisasInsn {