[PATCH 1/6] hw/riscv: microchip_pfsoc: Use MachineState::ram and MachineClass::default_ram_id

[Bin Meng]

Using memory_region_init_ram(), which can't possibly handle vhost-user,
and can't work as expected with '-numa node,memdev' options.

Use MachineState::ram instead of manually initializing RAM memory
region, as well as by providing MachineClass::default_ram_id to
opt in to memdev scheme.

Signed-off-by: Bin Meng <bmeng...@gmail.com>
---

 hw/riscv/microchip_pfsoc.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/hw/riscv/microchip_pfsoc.c b/hw/riscv/microchip_pfsoc.c
index e475b6d511..f10f55b488 100644
--- a/hw/riscv/microchip_pfsoc.c
+++ b/hw/riscv/microchip_pfsoc.c
@@ -459,7 +459,6 @@ static void microchip_icicle_kit_machine_init(MachineState 
*machine)
     const MemMapEntry *memmap = microchip_pfsoc_memmap;
     MicrochipIcicleKitState *s = MICROCHIP_ICICLE_KIT_MACHINE(machine);
     MemoryRegion *system_memory = get_system_memory();
-    MemoryRegion *mem_low = g_new(MemoryRegion, 1);
     MemoryRegion *mem_low_alias = g_new(MemoryRegion, 1);
     MemoryRegion *mem_high = g_new(MemoryRegion, 1);
     MemoryRegion *mem_high_alias = g_new(MemoryRegion, 1);
@@ -486,16 +485,13 @@ static void 
microchip_icicle_kit_machine_init(MachineState *machine)
     qdev_realize(DEVICE(&s->soc), NULL, &error_abort);
 
     /* Register RAM */
-    memory_region_init_ram(mem_low, NULL, "microchip.icicle.kit.ram_low",
-                           memmap[MICROCHIP_PFSOC_DRAM_LO].size,
-                           &error_fatal);
     memory_region_init_alias(mem_low_alias, NULL,
                              "microchip.icicle.kit.ram_low.alias",
-                             mem_low, 0,
+                             machine->ram, 0,
                              memmap[MICROCHIP_PFSOC_DRAM_LO_ALIAS].size);
     memory_region_add_subregion(system_memory,
                                 memmap[MICROCHIP_PFSOC_DRAM_LO].base,
-                                mem_low);
+                                machine->ram);
     memory_region_add_subregion(system_memory,
                                 memmap[MICROCHIP_PFSOC_DRAM_LO_ALIAS].base,
                                 mem_low_alias);
@@ -606,6 +602,7 @@ static void 
microchip_icicle_kit_machine_class_init(ObjectClass *oc, void *data)
                    MICROCHIP_PFSOC_COMPUTE_CPU_COUNT;
     mc->min_cpus = MICROCHIP_PFSOC_MANAGEMENT_CPU_COUNT + 1;
     mc->default_cpus = mc->min_cpus;
+    mc->default_ram_id = "microchip.icicle.kit.ram_low";
 
     /*
      * Map 513 MiB high memory, the mimimum required high memory size, because
-- 
2.25.1