This field is only used when S390PCIBusDevice exists, so it can be moved
there to simplify S390PCIIOMMU which purpose is just to store the "root"
AddressSpace.

This also allows to save/restore this field during migration.

Signed-off-by: Konstantin Shkolnyy <kshk@linux.ibm.com>
---
 hw/s390x/s390-pci-bus.c         | 14 +++++++-------
 hw/s390x/s390-pci-inst.c        |  8 ++++----
 include/hw/s390x/s390-pci-bus.h |  2 +-
 3 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c
index 83e9ca99f3..27ba3c801c 100644
--- a/hw/s390x/s390-pci-bus.c
+++ b/hw/s390x/s390-pci-bus.c
@@ -205,7 +205,7 @@ void s390_pci_sclp_deconfigure(SCCB *sccb)
         } else if (pbdev->summary_ind) {
             pci_dereg_irqs(pbdev);
         }
-        if (pbdev->iommu->enabled) {
+        if (pbdev->iommu_enabled) {
             pci_dereg_ioat(pbdev);
         }
         pbdev->state = ZPCI_FS_STANDBY;
@@ -554,7 +554,7 @@ static IOMMUTLBEntry s390_translate_iommu(IOMMUMemoryRegion *mr, hwaddr addr,
     switch (pbdev->state) {
     case ZPCI_FS_ENABLED:
     case ZPCI_FS_BLOCKED:
-        if (!iommu->enabled) {
+        if (!pbdev->iommu_enabled) {
             return ret;
         }
         break;
@@ -771,7 +771,7 @@ void s390_pci_iommu_enable(S390PCIBusDevice *pbdev)
     memory_region_init_iommu(&pbdev->iommu_mr, sizeof(pbdev->iommu_mr),
                              TYPE_S390_IOMMU_MEMORY_REGION, OBJECT(&iommu->mr),
                              name, iommu->pal + 1);
-    iommu->enabled = true;
+    pbdev->iommu_enabled = true;
     memory_region_add_subregion(&iommu->mr, 0, MEMORY_REGION(&pbdev->iommu_mr));
     g_free(name);
 }
@@ -794,7 +794,7 @@ void s390_pci_iommu_direct_map_enable(S390PCIBusDevice *pbdev)
     memory_region_init_alias(pbdev->dm_mr, OBJECT(&iommu->mr), name,
                              get_system_memory(), 0,
                              s390_get_memory_limit(s390ms));
-    iommu->enabled = true;
+    pbdev->iommu_enabled = true;
     memory_region_add_subregion(&iommu->mr, pbdev->zpci_fn.sdma,
                                 pbdev->dm_mr);
 }
@@ -802,7 +802,7 @@ void s390_pci_iommu_direct_map_enable(S390PCIBusDevice *pbdev)
 void s390_pci_iommu_disable(S390PCIBusDevice *pbdev)
 {
     S390PCIIOMMU *iommu = pbdev->iommu;
-    iommu->enabled = false;
+    pbdev->iommu_enabled = false;
     g_hash_table_remove_all(pbdev->iotlb);
     if (pbdev->dm_mr) {
         memory_region_del_subregion(&iommu->mr, pbdev->dm_mr);
@@ -1411,7 +1411,7 @@ static void s390_pcihost_reset(DeviceState *dev)
             } else if (pbdev->summary_ind) {
                 pci_dereg_irqs(pbdev);
             }
-            if (pbdev->iommu->enabled) {
+            if (pbdev->iommu_enabled) {
                 pci_dereg_ioat(pbdev);
             }
             pbdev->state = ZPCI_FS_STANDBY;
@@ -1552,7 +1552,7 @@ static void s390_pci_device_reset(DeviceState *dev)
     } else if (pbdev->summary_ind) {
         pci_dereg_irqs(pbdev);
     }
-    if (pbdev->iommu->enabled) {
+    if (pbdev->iommu_enabled) {
         pci_dereg_ioat(pbdev);
     }
 
diff --git a/hw/s390x/s390-pci-inst.c b/hw/s390x/s390-pci-inst.c
index 8349b44dd4..4458eae681 100644
--- a/hw/s390x/s390-pci-inst.c
+++ b/hw/s390x/s390-pci-inst.c
@@ -1251,7 +1251,7 @@ int mpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar,
         if (dmaas != 0) {
             cc = ZPCI_PCI_LS_ERR;
             s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL);
-        } else if (pbdev->iommu->enabled) {
+        } else if (pbdev->iommu_enabled) {
             cc = ZPCI_PCI_LS_ERR;
             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
         } else if (reg_ioat(env, pbdev, fib, ra)) {
@@ -1263,7 +1263,7 @@ int mpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar,
         if (dmaas != 0) {
             cc = ZPCI_PCI_LS_ERR;
             s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL);
-        } else if (!pbdev->iommu->enabled) {
+        } else if (!pbdev->iommu_enabled) {
             cc = ZPCI_PCI_LS_ERR;
             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
         } else {
@@ -1274,7 +1274,7 @@ int mpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar,
         if (dmaas != 0) {
             cc = ZPCI_PCI_LS_ERR;
             s390_set_status_code(env, r1, ZPCI_MOD_ST_DMAAS_INVAL);
-        } else if (!pbdev->iommu->enabled) {
+        } else if (!pbdev->iommu_enabled) {
             cc = ZPCI_PCI_LS_ERR;
             s390_set_status_code(env, r1, ZPCI_MOD_ST_SEQUENCE);
         } else {
@@ -1404,7 +1404,7 @@ int stpcifc_service_call(S390CPU *cpu, uint8_t r1, uint64_t fiba, uint8_t ar,
         /* fallthrough */
     case ZPCI_FS_ENABLED:
         fib.fc |= 0x80;
-        if (pbdev->iommu->enabled) {
+        if (pbdev->iommu_enabled) {
             fib.fc |= 0x10;
         }
         if (!(fh & FH_MASK_ENABLE)) {
diff --git a/include/hw/s390x/s390-pci-bus.h b/include/hw/s390x/s390-pci-bus.h
index fcaaf19512..24f6e60786 100644
--- a/include/hw/s390x/s390-pci-bus.h
+++ b/include/hw/s390x/s390-pci-bus.h
@@ -275,7 +275,6 @@ struct S390PCIIOMMU {
     Object parent_obj;
     AddressSpace as;
     MemoryRegion mr;
-    bool enabled;
     uint64_t g_iota;
     uint64_t pba;
     uint64_t pal;
@@ -350,6 +349,7 @@ struct S390PCIBusDevice {
     S390MsixInfo msix;
     AdapterRoutes routes;
     S390PCIIOMMU *iommu;
+    bool iommu_enabled;
     IOMMUMemoryRegion iommu_mr;
     MemoryRegion *dm_mr;
     GHashTable *iotlb;
-- 
2.34.1