diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c
index b4f277942835b4ca19304a49560e7160b005063a..3650c1b6781fa7a4ab3cd1d79406390c388d2092 100644
--- a/target/s390x/mem_helper.c
+++ b/target/s390x/mem_helper.c
@@ -1688,17 +1688,9 @@ uint32_t HELPER(testblock)(CPUS390XState *env, uint64_t real_addr)
 {
     uintptr_t ra = GETPC();
     CPUState *cs = CPU(s390_env_get_cpu(env));
-    uint64_t abs_addr;
     int i;
 
-    real_addr = wrap_address(env, real_addr);
-    abs_addr = mmu_real2abs(env, real_addr) & TARGET_PAGE_MASK;
-    if (!address_space_access_valid(&address_space_memory, abs_addr,
-                                    TARGET_PAGE_SIZE, true)) {
-        cpu_restore_state(cs, ra);
-        program_interrupt(env, PGM_ADDRESSING, 4);
-        return 1;
-    }
+    real_addr = wrap_address(env, real_addr) & TARGET_PAGE_MASK;
 
     /* Check low-address protection */
     if ((env->cregs[0] & CR0_LOWPROT) && real_addr < 0x2000) {
@@ -1708,7 +1700,7 @@ uint32_t HELPER(testblock)(CPUS390XState *env, uint64_t real_addr)
     }
 
     for (i = 0; i < TARGET_PAGE_SIZE; i += 8) {
-        stq_phys(cs->as, abs_addr + i, 0);
+        cpu_stq_real_ra(env, real_addr + i, 0, ra);
     }
 
     return 0;