memory: extract flat_range_coalesced_io_{del,add}

Extract two new functions from memory_region_update_coalesced_range_as.
To avoid duplication in the creation of the MemoryRegionSection, use
MEMORY_LISTENER_UPDATE_REGION instead of MEMORY_LISTENER_CALL
to invoke the listener callback.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

memory.c

@@ -850,6 +850,33 @@ static void address_space_update_ioeventfds(AddressSpace *as)
     flatview_unref(view);
 }
 
+static void flat_range_coalesced_io_del(FlatRange *fr, AddressSpace *as)
+{
+    MEMORY_LISTENER_UPDATE_REGION(fr, as, Reverse, coalesced_io_del,
+                                  int128_get64(fr->addr.start),
+                                  int128_get64(fr->addr.size));
+}
+
+static void flat_range_coalesced_io_add(FlatRange *fr, AddressSpace *as)
+{
+    MemoryRegion *mr = fr->mr;
+    CoalescedMemoryRange *cmr;
+    AddrRange tmp;
+
+    QTAILQ_FOREACH(cmr, &mr->coalesced, link) {
+        tmp = addrrange_shift(cmr->addr,
+                              int128_sub(fr->addr.start,
+                                         int128_make64(fr->offset_in_region)));
+        if (!addrrange_intersects(tmp, fr->addr)) {
+            continue;
+        }
+        tmp = addrrange_intersection(tmp, fr->addr);
+        MEMORY_LISTENER_UPDATE_REGION(fr, as, Forward, coalesced_io_add,
+                                      int128_get64(tmp.start),
+                                      int128_get64(tmp.size));
+    }
+}
+
 static void address_space_update_topology_pass(AddressSpace *as,
                                                const FlatView *old_view,
                                                const FlatView *new_view,
@@ -2136,34 +2163,12 @@ static void memory_region_update_coalesced_range_as(MemoryRegion *mr, AddressSpa
 {
     FlatView *view;
     FlatRange *fr;
-    CoalescedMemoryRange *cmr;
-    AddrRange tmp;
-    MemoryRegionSection section;
 
     view = address_space_get_flatview(as);
     FOR_EACH_FLAT_RANGE(fr, view) {
         if (fr->mr == mr) {
-            section = (MemoryRegionSection) {
-                .fv = view,
-                .offset_within_address_space = int128_get64(fr->addr.start),
-                .size = fr->addr.size,
-            };
-
-            MEMORY_LISTENER_CALL(as, coalesced_io_del, Reverse, &section,
-                                 int128_get64(fr->addr.start),
-                                 int128_get64(fr->addr.size));
-            QTAILQ_FOREACH(cmr, &mr->coalesced, link) {
-                tmp = addrrange_shift(cmr->addr,
-                                      int128_sub(fr->addr.start,
-                                                 int128_make64(fr->offset_in_region)));
-                if (!addrrange_intersects(tmp, fr->addr)) {
-                    continue;
-                }
-                tmp = addrrange_intersection(tmp, fr->addr);
-                MEMORY_LISTENER_CALL(as, coalesced_io_add, Forward, &section,
-                                     int128_get64(tmp.start),
-                                     int128_get64(tmp.size));
-            }
+            flat_range_coalesced_io_del(fr, as);
+            flat_range_coalesced_io_add(fr, as);
         }
     }
     flatview_unref(view);