From bd457782b3b0a313f3991038eb55bc44369c72c6 Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Wed, 19 Feb 2020 11:09:17 -0500 Subject: [PATCH] x86/pc: 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 Reviewed-by: Michael S. Tsirkin Reviewed-by: Richard Henderson Message-Id: <20200219160953.13771-44-imammedo@redhat.com> --- hw/i386/pc.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 2ddce4230a..6ab4acb0c6 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -937,7 +937,7 @@ void pc_memory_init(PCMachineState *pcms, MemoryRegion **ram_memory) { int linux_boot, i; - MemoryRegion *ram, *option_rom_mr; + MemoryRegion *option_rom_mr; MemoryRegion *ram_below_4g, *ram_above_4g; FWCfgState *fw_cfg; MachineState *machine = MACHINE(pcms); @@ -950,22 +950,20 @@ void pc_memory_init(PCMachineState *pcms, linux_boot = (machine->kernel_filename != NULL); - /* Allocate RAM. We allocate it as a single memory region and use - * aliases to address portions of it, mostly for backwards compatibility - * with older qemus that used qemu_ram_alloc(). + /* + * Split single memory region and use aliases to address portions of it, + * done for backwards compatibility with older qemus. */ - ram = g_malloc(sizeof(*ram)); - memory_region_allocate_system_memory(ram, NULL, "pc.ram", - machine->ram_size); - *ram_memory = ram; + *ram_memory = machine->ram; ram_below_4g = g_malloc(sizeof(*ram_below_4g)); - memory_region_init_alias(ram_below_4g, NULL, "ram-below-4g", ram, + memory_region_init_alias(ram_below_4g, NULL, "ram-below-4g", machine->ram, 0, x86ms->below_4g_mem_size); memory_region_add_subregion(system_memory, 0, ram_below_4g); e820_add_entry(0, x86ms->below_4g_mem_size, E820_RAM); if (x86ms->above_4g_mem_size > 0) { ram_above_4g = g_malloc(sizeof(*ram_above_4g)); - memory_region_init_alias(ram_above_4g, NULL, "ram-above-4g", ram, + memory_region_init_alias(ram_above_4g, NULL, "ram-above-4g", + machine->ram, x86ms->below_4g_mem_size, x86ms->above_4g_mem_size); memory_region_add_subregion(system_memory, 0x100000000ULL, @@ -1952,6 +1950,7 @@ static void pc_machine_class_init(ObjectClass *oc, void *data) mc->default_cpu_type = TARGET_DEFAULT_CPU_TYPE; mc->nvdimm_supported = true; mc->numa_mem_supported = true; + mc->default_ram_id = "pc.ram"; object_class_property_add(oc, PC_MACHINE_DEVMEM_REGION_SIZE, "int", pc_machine_get_device_memory_region_size, NULL,