diff --git a/exec.c b/exec.c
index c88b6f0..f840326 100644
--- a/exec.c
+++ b/exec.c
@@ -1609,7 +1609,7 @@ static void watch_mem_write(void *opaque, hwaddr addr,
         stb_phys(addr, val);
         break;
     case 2:
-        stw_phys(addr, val);
+        stw_phys(&address_space_memory, addr, val);
         break;
     case 4:
         stl_phys(&address_space_memory, addr, val);
@@ -2586,7 +2586,8 @@ void stb_phys(hwaddr addr, uint32_t val)
 }
 
 /* warning: addr must be aligned */
-static inline void stw_phys_internal(hwaddr addr, uint32_t val,
+static inline void stw_phys_internal(AddressSpace *as,
+                                     hwaddr addr, uint32_t val,
                                      enum device_endian endian)
 {
     uint8_t *ptr;
@@ -2594,8 +2595,7 @@ static inline void stw_phys_internal(hwaddr addr, uint32_t val,
     hwaddr l = 2;
     hwaddr addr1;
 
-    mr = address_space_translate(&address_space_memory, addr, &addr1, &l,
-                                 true);
+    mr = address_space_translate(as, addr, &addr1, &l, true);
     if (l < 2 || !memory_access_is_direct(mr, true)) {
 #if defined(TARGET_WORDS_BIGENDIAN)
         if (endian == DEVICE_LITTLE_ENDIAN) {
@@ -2626,19 +2626,19 @@ static inline void stw_phys_internal(hwaddr addr, uint32_t val,
     }
 }
 
-void stw_phys(hwaddr addr, uint32_t val)
+void stw_phys(AddressSpace *as, hwaddr addr, uint32_t val)
 {
-    stw_phys_internal(addr, val, DEVICE_NATIVE_ENDIAN);
+    stw_phys_internal(as, addr, val, DEVICE_NATIVE_ENDIAN);
 }
 
-void stw_le_phys(hwaddr addr, uint32_t val)
+void stw_le_phys(AddressSpace *as, hwaddr addr, uint32_t val)
 {
-    stw_phys_internal(addr, val, DEVICE_LITTLE_ENDIAN);
+    stw_phys_internal(as, addr, val, DEVICE_LITTLE_ENDIAN);
 }
 
-void stw_be_phys(hwaddr addr, uint32_t val)
+void stw_be_phys(AddressSpace *as, hwaddr addr, uint32_t val)
 {
-    stw_phys_internal(addr, val, DEVICE_BIG_ENDIAN);
+    stw_phys_internal(as, addr, val, DEVICE_BIG_ENDIAN);
 }
 
 /* XXX: optimize */
diff --git a/hw/net/vmware_utils.h b/hw/net/vmware_utils.h
index 2ed73af..d8f734f 100644
--- a/hw/net/vmware_utils.h
+++ b/hw/net/vmware_utils.h
@@ -89,7 +89,7 @@ static inline void
 vmw_shmem_st16(hwaddr addr, uint16_t value)
 {
     VMW_SHPRN("SHMEM store16: %" PRIx64 " (value 0x%X)", addr, value);
-    stw_le_phys(addr, value);
+    stw_le_phys(&address_space_memory, addr, value);
 }
 
 static inline uint32_t
diff --git a/hw/ppc/ppc405_uc.c b/hw/ppc/ppc405_uc.c
index 47a4242..b0a59c3 100644
--- a/hw/ppc/ppc405_uc.c
+++ b/hw/ppc/ppc405_uc.c
@@ -65,7 +65,7 @@ ram_addr_t ppc405_set_bootinfo (CPUPPCState *env, ppc4xx_bd_info_t *bd,
     for (i = 0; i < 6; i++) {
         stb_phys(bdloc + 0x24 + i, bd->bi_enetaddr[i]);
     }
-    stw_be_phys(bdloc + 0x2A, bd->bi_ethspeed);
+    stw_be_phys(cs->as, bdloc + 0x2A, bd->bi_ethspeed);
     stl_be_phys(cs->as, bdloc + 0x2C, bd->bi_intfreq);
     stl_be_phys(cs->as, bdloc + 0x30, bd->bi_busfreq);
     stl_be_phys(cs->as, bdloc + 0x34, bd->bi_baudrate);
diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c
index f47c3ec..ebf09e9 100644
--- a/hw/ppc/spapr_hcall.c
+++ b/hw/ppc/spapr_hcall.c
@@ -570,7 +570,7 @@ static target_ulong h_logical_store(PowerPCCPU *cpu, sPAPREnvironment *spapr,
         stb_phys(addr, val);
         return H_SUCCESS;
     case 2:
-        stw_phys(addr, val);
+        stw_phys(cs->as, addr, val);
         return H_SUCCESS;
     case 4:
         stl_phys(cs->as, addr, val);
@@ -635,7 +635,7 @@ static target_ulong h_logical_memop(PowerPCCPU *cpu, sPAPREnvironment *spapr,
             stb_phys(dst, tmp);
             break;
         case 1:
-            stw_phys(dst, tmp);
+            stw_phys(cs->as, dst, tmp);
             break;
         case 2:
             stl_phys(cs->as, dst, tmp);
diff --git a/hw/s390x/css.c b/hw/s390x/css.c
index cfa8a9b..75b04b4 100644
--- a/hw/s390x/css.c
+++ b/hw/s390x/css.c
@@ -680,7 +680,8 @@ static void css_update_chnmon(SubchDev *sch)
         count = lduw_phys(&address_space_memory,
                           channel_subsys->chnmon_area + offset);
         count++;
-        stw_phys(channel_subsys->chnmon_area + offset, count);
+        stw_phys(&address_space_memory,
+                 channel_subsys->chnmon_area + offset, count);
     }
 }
 
diff --git a/hw/s390x/s390-virtio-bus.c b/hw/s390x/s390-virtio-bus.c
index f8d51b3..f05ca70 100644
--- a/hw/s390x/s390-virtio-bus.c
+++ b/hw/s390x/s390-virtio-bus.c
@@ -77,10 +77,10 @@ void s390_virtio_reset_idx(VirtIOS390Device *dev)
     for (i = 0; i < num_vq; i++) {
         idx_addr = virtio_queue_get_avail_addr(dev->vdev, i) +
             VIRTIO_VRING_AVAIL_IDX_OFFS;
-        stw_phys(idx_addr, 0);
+        stw_phys(&address_space_memory, idx_addr, 0);
         idx_addr = virtio_queue_get_used_addr(dev->vdev, i) +
             VIRTIO_VRING_USED_IDX_OFFS;
-        stw_phys(idx_addr, 0);
+        stw_phys(&address_space_memory, idx_addr, 0);
     }
 }
 
@@ -380,7 +380,9 @@ void s390_virtio_device_sync(VirtIOS390Device *dev)
         virtio_queue_set_vector(dev->vdev, i, i);
         stq_be_phys(&address_space_memory,
                     vq + VIRTIO_VQCONFIG_OFFS_ADDRESS, vring);
-        stw_be_phys(vq + VIRTIO_VQCONFIG_OFFS_NUM, virtio_queue_get_num(dev->vdev, i));
+        stw_be_phys(&address_space_memory,
+                    vq + VIRTIO_VQCONFIG_OFFS_NUM,
+                    virtio_queue_get_num(dev->vdev, i));
     }
 
     cur_offs = dev->dev_offs;
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index c74d00b..1817c79 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -477,7 +477,8 @@ static int virtio_ccw_cb(SubchDev *sch, CCW1 ccw)
             vq_config.index = lduw_phys(&address_space_memory, ccw.cda);
             vq_config.num_max = virtio_queue_get_num(vdev,
                                                      vq_config.index);
-            stw_phys(ccw.cda + sizeof(vq_config.index), vq_config.num_max);
+            stw_phys(&address_space_memory,
+                     ccw.cda + sizeof(vq_config.index), vq_config.num_max);
             sch->curr_status.scsw.count = ccw.count - sizeof(vq_config);
             ret = 0;
         }
diff --git a/hw/sh4/r2d.c b/hw/sh4/r2d.c
index 76ef869..eaeb7ed 100644
--- a/hw/sh4/r2d.c
+++ b/hw/sh4/r2d.c
@@ -319,7 +319,7 @@ static void r2d_init(QEMUMachineInitArgs *args)
 
         /* initialization which should be done by firmware */
         stl_phys(&address_space_memory, SH7750_BCR1, 1<<3); /* cs3 SDRAM */
-        stw_phys(SH7750_BCR2, 3<<(3*2)); /* cs3 32bit */
+        stw_phys(&address_space_memory, SH7750_BCR2, 3<<(3*2)); /* cs3 32bit */
         reset_info->vector = (SDRAM_BASE + LINUX_LOAD_OFFSET) | 0xa0000000; /* Start from P2 area */
     }
 
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 3a00020..21072f0 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -180,21 +180,23 @@ static inline void vring_used_idx_set(VirtQueue *vq, uint16_t val)
 {
     hwaddr pa;
     pa = vq->vring.used + offsetof(VRingUsed, idx);
-    stw_phys(pa, val);
+    stw_phys(&address_space_memory, pa, val);
 }
 
 static inline void vring_used_flags_set_bit(VirtQueue *vq, int mask)
 {
     hwaddr pa;
     pa = vq->vring.used + offsetof(VRingUsed, flags);
-    stw_phys(pa, lduw_phys(&address_space_memory, pa) | mask);
+    stw_phys(&address_space_memory,
+             pa, lduw_phys(&address_space_memory, pa) | mask);
 }
 
 static inline void vring_used_flags_unset_bit(VirtQueue *vq, int mask)
 {
     hwaddr pa;
     pa = vq->vring.used + offsetof(VRingUsed, flags);
-    stw_phys(pa, lduw_phys(&address_space_memory, pa) & ~mask);
+    stw_phys(&address_space_memory,
+             pa, lduw_phys(&address_space_memory, pa) & ~mask);
 }
 
 static inline void vring_avail_event(VirtQueue *vq, uint16_t val)
@@ -204,7 +206,7 @@ static inline void vring_avail_event(VirtQueue *vq, uint16_t val)
         return;
     }
     pa = vq->vring.used + offsetof(VRingUsed, ring[vq->vring.num]);
-    stw_phys(pa, val);
+    stw_phys(&address_space_memory, pa, val);
 }
 
 void virtio_queue_set_notification(VirtQueue *vq, int enable)
diff --git a/include/exec/cpu-common.h b/include/exec/cpu-common.h
index dd5feab..a02cc3b 100644
--- a/include/exec/cpu-common.h
+++ b/include/exec/cpu-common.h
@@ -91,8 +91,8 @@ uint32_t ldl_be_phys(AddressSpace *as, hwaddr addr);
 uint64_t ldq_le_phys(AddressSpace *as, hwaddr addr);
 uint64_t ldq_be_phys(AddressSpace *as, hwaddr addr);
 void stb_phys(hwaddr addr, uint32_t val);
-void stw_le_phys(hwaddr addr, uint32_t val);
-void stw_be_phys(hwaddr addr, uint32_t val);
+void stw_le_phys(AddressSpace *as, hwaddr addr, uint32_t val);
+void stw_be_phys(AddressSpace *as, hwaddr addr, uint32_t val);
 void stl_le_phys(AddressSpace *as, hwaddr addr, uint32_t val);
 void stl_be_phys(AddressSpace *as, hwaddr addr, uint32_t val);
 void stq_le_phys(AddressSpace *as, hwaddr addr, uint64_t val);
@@ -103,7 +103,7 @@ uint32_t lduw_phys(AddressSpace *as, hwaddr addr);
 uint32_t ldl_phys(AddressSpace *as, hwaddr addr);
 uint64_t ldq_phys(AddressSpace *as, hwaddr addr);
 void stl_phys_notdirty(AddressSpace *as, hwaddr addr, uint32_t val);
-void stw_phys(hwaddr addr, uint32_t val);
+void stw_phys(AddressSpace *as, hwaddr addr, uint32_t val);
 void stl_phys(AddressSpace *as, hwaddr addr, uint32_t val);
 void stq_phys(AddressSpace *as, hwaddr addr, uint64_t val);
 #endif
diff --git a/target-i386/smm_helper.c b/target-i386/smm_helper.c
index 88f6d7f..71c64b2 100644
--- a/target-i386/smm_helper.c
+++ b/target-i386/smm_helper.c
@@ -60,8 +60,8 @@ void do_smm_enter(X86CPU *cpu)
     for (i = 0; i < 6; i++) {
         dt = &env->segs[i];
         offset = 0x7e00 + i * 16;
-        stw_phys(sm_state + offset, dt->selector);
-        stw_phys(sm_state + offset + 2, (dt->flags >> 8) & 0xf0ff);
+        stw_phys(cs->as, sm_state + offset, dt->selector);
+        stw_phys(cs->as, sm_state + offset + 2, (dt->flags >> 8) & 0xf0ff);
         stl_phys(cs->as, sm_state + offset + 4, dt->limit);
         stq_phys(cs->as, sm_state + offset + 8, dt->base);
     }
@@ -69,18 +69,18 @@ void do_smm_enter(X86CPU *cpu)
     stq_phys(cs->as, sm_state + 0x7e68, env->gdt.base);
     stl_phys(cs->as, sm_state + 0x7e64, env->gdt.limit);
 
-    stw_phys(sm_state + 0x7e70, env->ldt.selector);
+    stw_phys(cs->as, sm_state + 0x7e70, env->ldt.selector);
     stq_phys(cs->as, sm_state + 0x7e78, env->ldt.base);
     stl_phys(cs->as, sm_state + 0x7e74, env->ldt.limit);
-    stw_phys(sm_state + 0x7e72, (env->ldt.flags >> 8) & 0xf0ff);
+    stw_phys(cs->as, sm_state + 0x7e72, (env->ldt.flags >> 8) & 0xf0ff);
 
     stq_phys(cs->as, sm_state + 0x7e88, env->idt.base);
     stl_phys(cs->as, sm_state + 0x7e84, env->idt.limit);
 
-    stw_phys(sm_state + 0x7e90, env->tr.selector);
+    stw_phys(cs->as, sm_state + 0x7e90, env->tr.selector);
     stq_phys(cs->as, sm_state + 0x7e98, env->tr.base);
     stl_phys(cs->as, sm_state + 0x7e94, env->tr.limit);
-    stw_phys(sm_state + 0x7e92, (env->tr.flags >> 8) & 0xf0ff);
+    stw_phys(cs->as, sm_state + 0x7e92, (env->tr.flags >> 8) & 0xf0ff);
 
     stq_phys(cs->as, sm_state + 0x7ed0, env->efer);
 
diff --git a/target-i386/svm_helper.c b/target-i386/svm_helper.c
index b9fd779..a86a99b 100644
--- a/target-i386/svm_helper.c
+++ b/target-i386/svm_helper.c
@@ -89,13 +89,13 @@ static inline void svm_save_seg(CPUX86State *env, hwaddr addr,
                                 const SegmentCache *sc)
 {
     CPUState *cs = ENV_GET_CPU(env);
-    stw_phys(addr + offsetof(struct vmcb_seg, selector),
+    stw_phys(cs->as, addr + offsetof(struct vmcb_seg, selector),
              sc->selector);
     stq_phys(cs->as, addr + offsetof(struct vmcb_seg, base),
              sc->base);
     stl_phys(cs->as, addr + offsetof(struct vmcb_seg, limit),
              sc->limit);
-    stw_phys(addr + offsetof(struct vmcb_seg, attrib),
+    stw_phys(cs->as, addr + offsetof(struct vmcb_seg, attrib),
              ((sc->flags >> 8) & 0xff) | ((sc->flags >> 12) & 0x0f00));
 }
 
diff --git a/target-s390x/mem_helper.c b/target-s390x/mem_helper.c
index 3e9a6d0..ce3a08e 100644
--- a/target-s390x/mem_helper.c
+++ b/target-s390x/mem_helper.c
@@ -1043,7 +1043,8 @@ void HELPER(ptlb)(CPUS390XState *env)
 /* store using real address */
 void HELPER(stura)(CPUS390XState *env, uint64_t addr, uint64_t v1)
 {
-    stw_phys(get_address(env, 0, 0, addr), (uint32_t)v1);
+    CPUState *cs = ENV_GET_CPU(env);
+    stw_phys(cs->as, get_address(env, 0, 0, addr), (uint32_t)v1);
 }
 
 /* load real address */
diff --git a/target-sparc/ldst_helper.c b/target-sparc/ldst_helper.c
index 0e87d79..4bc2568 100644
--- a/target-sparc/ldst_helper.c
+++ b/target-sparc/ldst_helper.c
@@ -1015,7 +1015,7 @@ void helper_st_asi(CPUSPARCState *env, target_ulong addr, uint64_t val, int asi,
                 stb_phys(addr, val);
                 break;
             case 2:
-                stw_phys(addr, val);
+                stw_phys(cs->as, addr, val);
                 break;
             case 4:
             default:
@@ -1035,7 +1035,7 @@ void helper_st_asi(CPUSPARCState *env, target_ulong addr, uint64_t val, int asi,
                          | ((hwaddr)(asi & 0xf) << 32), val);
                 break;
             case 2:
-                stw_phys((hwaddr)addr
+                stw_phys(cs->as, (hwaddr)addr
                          | ((hwaddr)(asi & 0xf) << 32), val);
                 break;
             case 4:
@@ -1814,7 +1814,7 @@ void helper_st_asi(CPUSPARCState *env, target_ulong addr, target_ulong val,
                 stb_phys(addr, val);
                 break;
             case 2:
-                stw_phys(addr, val);
+                stw_phys(cs->as, addr, val);
                 break;
             case 4:
                 stl_phys(cs->as, addr, val);
