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null-machine: 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>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200219160953.13771-40-imammedo@redhat.com>
This commit is contained in:
Igor Mammedov 2020-02-19 11:09:13 -05:00 committed by Patchew Importer
parent 3a12fc61af
commit c74e71908d
1 changed files with 3 additions and 5 deletions
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8
hw/core/null-machine.c
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@ -32,11 +32,8 @@ static void machine_none_init(MachineState *mch)
}
/* RAM at address zero */
if (mch->ram_size) {
MemoryRegion *ram = g_new(MemoryRegion, 1);
memory_region_allocate_system_memory(ram, NULL, "ram", mch->ram_size);
memory_region_add_subregion(get_system_memory(), 0, ram);
if (mch->ram) {
memory_region_add_subregion(get_system_memory(), 0, mch->ram);
}
if (mch->kernel_filename) {
@ -52,6 +49,7 @@ static void machine_none_machine_init(MachineClass *mc)
mc->init = machine_none_init;
mc->max_cpus = 1;
mc->default_ram_size = 0;
mc->default_ram_id = "ram";
}
DEFINE_MACHINE("none", machine_none_machine_init)