diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c
index 91cd4c26f9..9c7be26248 100644
--- a/hw/ppc/e500.c
+++ b/hw/ppc/e500.c
@@ -912,7 +912,8 @@ void ppce500_init(MachineState *machine)
     machine->ram_size = ram_size;
 
     /* Register Memory */
-    memory_region_allocate_system_memory(ram, NULL, "mpc8544ds.ram", ram_size);
+    memory_region_allocate_system_memory(ram, machine, "mpc8544ds.ram",
+                                         ram_size);
     memory_region_add_subregion(address_space_mem, 0, ram);
 
     dev = qdev_create(NULL, "e500-ccsr");
diff --git a/hw/ppc/mac_newworld.c b/hw/ppc/mac_newworld.c
index c5bbcc7433..8409114eed 100644
--- a/hw/ppc/mac_newworld.c
+++ b/hw/ppc/mac_newworld.c
@@ -152,7 +152,8 @@ static void ppc_core99_init(MachineState *machine)
     }
 
     /* allocate RAM */
-    memory_region_allocate_system_memory(ram, NULL, "ppc_core99.ram", ram_size);
+    memory_region_allocate_system_memory(ram, machine, "ppc_core99.ram",
+                                         ram_size);
     memory_region_add_subregion(get_system_memory(), 0, ram);
 
     /* allocate and load BIOS */
diff --git a/hw/ppc/mac_oldworld.c b/hw/ppc/mac_oldworld.c
index 0fa680b749..9dd645476a 100644
--- a/hw/ppc/mac_oldworld.c
+++ b/hw/ppc/mac_oldworld.c
@@ -127,7 +127,7 @@ static void ppc_heathrow_init(MachineState *machine)
         exit(1);
     }
 
-    memory_region_allocate_system_memory(ram, NULL, "ppc_heathrow.ram",
+    memory_region_allocate_system_memory(ram, machine, "ppc_heathrow.ram",
                                          ram_size);
     memory_region_add_subregion(sysmem, 0, ram);
 
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 7cf64b6d25..ac731c4f88 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -640,7 +640,7 @@ static void pnv_init(MachineState *machine)
     }
 
     ram = g_new(MemoryRegion, 1);
-    memory_region_allocate_system_memory(ram, NULL, "pnv.ram",
+    memory_region_allocate_system_memory(ram, machine, "pnv.ram",
                                          machine->ram_size);
     memory_region_add_subregion(get_system_memory(), 0, ram);
 
diff --git a/hw/ppc/ppc405_boards.c b/hw/ppc/ppc405_boards.c
index 388cae0b43..8a2d2f4511 100644
--- a/hw/ppc/ppc405_boards.c
+++ b/hw/ppc/ppc405_boards.c
@@ -162,8 +162,8 @@ static void ref405ep_init(MachineState *machine)
     MemoryRegion *sysmem = get_system_memory();
 
     /* XXX: fix this */
-    memory_region_allocate_system_memory(&ram_memories[0], NULL, "ef405ep.ram",
-                                         0x08000000);
+    memory_region_allocate_system_memory(&ram_memories[0], machine,
+                                         "ef405ep.ram", 128 * MiB);
     ram_bases[0] = 0;
     ram_sizes[0] = 0x08000000;
     memory_region_init(&ram_memories[1], NULL, "ef405ep.ram1", 0);
@@ -427,7 +427,7 @@ static void taihu_405ep_init(MachineState *machine)
 
     /* RAM is soldered to the board so the size cannot be changed */
     ram_size = 0x08000000;
-    memory_region_allocate_system_memory(ram, NULL, "taihu_405ep.ram",
+    memory_region_allocate_system_memory(ram, machine, "taihu_405ep.ram",
                                          ram_size);
 
     ram_bases[0] = 0;
diff --git a/hw/ppc/prep.c b/hw/ppc/prep.c
index 4f3c6bf190..54b00805e0 100644
--- a/hw/ppc/prep.c
+++ b/hw/ppc/prep.c
@@ -445,7 +445,8 @@ static void ppc_prep_init(MachineState *machine)
     }
 
     /* allocate RAM */
-    memory_region_allocate_system_memory(ram, NULL, "ppc_prep.ram", ram_size);
+    memory_region_allocate_system_memory(ram, machine, "ppc_prep.ram",
+                                         ram_size);
     memory_region_add_subregion(sysmem, 0, ram);
 
     if (linux_boot) {
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 4eb97d3a9b..1f168edd43 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -2840,7 +2840,7 @@ static void spapr_machine_init(MachineState *machine)
     }
 
     /* allocate RAM */
-    memory_region_allocate_system_memory(ram, NULL, "ppc_spapr.ram",
+    memory_region_allocate_system_memory(ram, machine, "ppc_spapr.ram",
                                          machine->ram_size);
     memory_region_add_subregion(sysmem, 0, ram);
 
diff --git a/hw/ppc/virtex_ml507.c b/hw/ppc/virtex_ml507.c
index 68625522d8..86c9273dc0 100644
--- a/hw/ppc/virtex_ml507.c
+++ b/hw/ppc/virtex_ml507.c
@@ -224,7 +224,7 @@ static void virtex_init(MachineState *machine)
 
     qemu_register_reset(main_cpu_reset, cpu);
 
-    memory_region_allocate_system_memory(phys_ram, NULL, "ram", ram_size);
+    memory_region_allocate_system_memory(phys_ram, machine, "ram", ram_size);
     memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
 
     dinfo = drive_get(IF_PFLASH, 0, 0);
