memory: add memory_region_is_mapped() API
which allows to check if MemoryRegion is already mapped.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/memory.c b/memory.c
index 4895e25..3e8cd56 100644
--- a/memory.c
+++ b/memory.c
@@ -493,7 +493,7 @@
return as;
}
}
- abort();
+ return NULL;
}
/* Render a memory region into the global view. Ranges in @view obscure
@@ -1593,6 +1593,11 @@
return true;
}
+bool memory_region_is_mapped(MemoryRegion *mr)
+{
+ return mr->container ? true : false;
+}
+
MemoryRegionSection memory_region_find(MemoryRegion *mr,
hwaddr addr, uint64_t size)
{
@@ -1610,6 +1615,9 @@
}
as = memory_region_to_address_space(root);
+ if (!as) {
+ return ret;
+ }
range = addrrange_make(int128_make64(addr), int128_make64(size));
view = address_space_get_flatview(as);
