ppc/pnv: use memdev for RAM

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200219160953.13771-63-imammedo@redhat.com>

diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 139c857b1e4c6cc0d6b7e9994a9d34f03f401c11..ea20a1dc3e2f68597669cd0a4fc8101ecac544f8 100644 (file)
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -690,7 +690,6 @@ static void pnv_init(MachineState *machine)
 {
     PnvMachineState *pnv = PNV_MACHINE(machine);
     MachineClass *mc = MACHINE_GET_CLASS(machine);
-    MemoryRegion *ram;
     char *fw_filename;
     long fw_size;
     int i;
@@ -702,11 +701,7 @@ static void pnv_init(MachineState *machine)
     if (machine->ram_size < (1 * GiB)) {
         warn_report("skiboot may not work with < 1GB of RAM");
     }
-
-    ram = g_new(MemoryRegion, 1);
-    memory_region_allocate_system_memory(ram, NULL, "pnv.ram",
-                                         machine->ram_size);
-    memory_region_add_subregion(get_system_memory(), 0, ram);
+    memory_region_add_subregion(get_system_memory(), 0, machine->ram);
 
     /*
      * Create our simple PNOR device
@@ -1976,6 +1971,7 @@ static void pnv_machine_class_init(ObjectClass *oc, void *data)
      * enough to fit the maximum initrd size at it's load address
      */
     mc->default_ram_size = INITRD_LOAD_ADDR + INITRD_MAX_SIZE;
+    mc->default_ram_id = "pnv.ram";
     ispc->print_info = pnv_pic_print_info;
 
     object_class_property_add_bool(oc, "hb-mode",