s390x/tcg: make testblock use the new _real mmu

Low address protection checks will be moved into the mmu later.
Signed-off-by: NDavid Hildenbrand <david@redhat.com>
Message-Id: <20170926183318.12995-6-david@redhat.com>
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>
Reviewed-by: NThomas Huth <thuth@redhat.com>
Signed-off-by: NCornelia Huck <cohuck@redhat.com>

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;