diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index f788fe27d6..e591a126e7 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -1512,7 +1512,6 @@ static void machvirt_init(MachineState *machine)
     MemoryRegion *sysmem = get_system_memory();
     MemoryRegion *secure_sysmem = NULL;
     int n, virt_max_cpus;
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     bool firmware_loaded;
     bool aarch64 = true;
     bool has_ged = !vmc->no_ged;
@@ -1706,9 +1705,8 @@ static void machvirt_init(MachineState *machine)
         }
     }
 
-    memory_region_allocate_system_memory(ram, NULL, "mach-virt.ram",
-                                         machine->ram_size);
-    memory_region_add_subregion(sysmem, vms->memmap[VIRT_MEM].base, ram);
+    memory_region_add_subregion(sysmem, vms->memmap[VIRT_MEM].base,
+                                machine->ram);
     if (machine->device_memory) {
         memory_region_add_subregion(sysmem, machine->device_memory->base,
                                     &machine->device_memory->mr);
@@ -2058,6 +2056,7 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
     hc->unplug_request = virt_machine_device_unplug_request_cb;
     mc->numa_mem_supported = true;
     mc->auto_enable_numa_with_memhp = true;
+    mc->default_ram_id = "mach-virt.ram";
 }
 
 static void virt_instance_init(Object *obj)