vfio/container: Move iova_ranges to base container

Meanwhile remove the helper function vfio_free_container as it
only calls g_free now.

No functional change intended.

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>

hw/vfio/common.c

@@ -637,9 +637,10 @@ static void vfio_listener_region_add(MemoryListener *listener,
             goto fail;
         }
 
-        if (container->iova_ranges) {
+        if (bcontainer->iova_ranges) {
             ret = memory_region_iommu_set_iova_ranges(giommu->iommu_mr,
-                    container->iova_ranges, &err);
+                                                      bcontainer->iova_ranges,
+                                                      &err);
             if (ret) {
                 g_free(giommu);
                 goto fail;

hw/vfio/container-base.c

@@ -54,6 +54,7 @@ void vfio_container_init(VFIOContainerBase *bcontainer, VFIOAddressSpace *space,
     bcontainer->error = NULL;
     bcontainer->dirty_pages_supported = false;
     bcontainer->dma_max_mappings = 0;
+    bcontainer->iova_ranges = NULL;
     QLIST_INIT(&bcontainer->giommu_list);
     QLIST_INIT(&bcontainer->vrdl_list);
 }
@@ -70,4 +71,6 @@ void vfio_container_destroy(VFIOContainerBase *bcontainer)
         QLIST_REMOVE(giommu, giommu_next);
         g_free(giommu);
     }
+
+    g_list_free_full(bcontainer->iova_ranges, g_free);
 }

hw/vfio/container.c

@@ -308,7 +308,7 @@ bool vfio_get_info_dma_avail(struct vfio_iommu_type1_info *info,
 }
 
 static bool vfio_get_info_iova_range(struct vfio_iommu_type1_info *info,
-                                     VFIOContainer *container)
+                                     VFIOContainerBase *bcontainer)
 {
     struct vfio_info_cap_header *hdr;
     struct vfio_iommu_type1_info_cap_iova_range *cap;
@@ -326,8 +326,8 @@ static bool vfio_get_info_iova_range(struct vfio_iommu_type1_info *info,
 
         range_set_bounds(range, cap->iova_ranges[i].start,
                          cap->iova_ranges[i].end);
-        container->iova_ranges =
-            range_list_insert(container->iova_ranges, range);
+        bcontainer->iova_ranges =
+            range_list_insert(bcontainer->iova_ranges, range);
     }
 
     return true;
@@ -475,12 +475,6 @@ static void vfio_get_iommu_info_migration(VFIOContainer *container,
     }
 }
 
-static void vfio_free_container(VFIOContainer *container)
-{
-    g_list_free_full(container->iova_ranges, g_free);
-    g_free(container);
-}
-
 static int vfio_connect_container(VFIOGroup *group, AddressSpace *as,
                                   Error **errp)
 {
@@ -560,7 +554,6 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as,
 
     container = g_malloc0(sizeof(*container));
     container->fd = fd;
-    container->iova_ranges = NULL;
     bcontainer = &container->bcontainer;
     vfio_container_init(bcontainer, space, &vfio_legacy_ops);
 
@@ -597,7 +590,7 @@ static int vfio_connect_container(VFIOGroup *group, AddressSpace *as,
             bcontainer->dma_max_mappings = 65535;
         }
 
-        vfio_get_info_iova_range(info, container);
+        vfio_get_info_iova_range(info, bcontainer);
 
         vfio_get_iommu_info_migration(container, info);
         g_free(info);
@@ -649,7 +642,7 @@ enable_discards_exit:
     vfio_ram_block_discard_disable(container, false);
 
 free_container_exit:
-    vfio_free_container(container);
+    g_free(container);
 
 close_fd_exit:
     close(fd);
@@ -693,7 +686,7 @@ static void vfio_disconnect_container(VFIOGroup *group)
 
         trace_vfio_disconnect_container(container->fd);
         close(container->fd);
-        vfio_free_container(container);
+        g_free(container);
 
         vfio_put_address_space(space);
     }

include/hw/vfio/vfio-common.h

@@ -82,7 +82,6 @@ typedef struct VFIOContainer {
     unsigned iommu_type;
     QLIST_HEAD(, VFIOHostDMAWindow) hostwin_list;
     QLIST_HEAD(, VFIOGroup) group_list;
-    GList *iova_ranges;
 } VFIOContainer;
 
 typedef struct VFIOHostDMAWindow {

include/hw/vfio/vfio-container-base.h

@@ -48,6 +48,7 @@ typedef struct VFIOContainerBase {
     QLIST_HEAD(, VFIORamDiscardListener) vrdl_list;
     QLIST_ENTRY(VFIOContainerBase) next;
     QLIST_HEAD(, VFIODevice) device_list;
+    GList *iova_ranges;
 } VFIOContainerBase;
 
 typedef struct VFIOGuestIOMMU {