diff options
Diffstat (limited to 'hw/i386')
| -rw-r--r-- | hw/i386/pc.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 77c587b..6cdcb00 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1197,6 +1197,9 @@ FWCfgState *pc_memory_init(MemoryRegion *system_memory, MemoryRegion *ram, *option_rom_mr; MemoryRegion *ram_below_4g, *ram_above_4g; FWCfgState *fw_cfg; + ram_addr_t ram_size = below_4g_mem_size + above_4g_mem_size; + MachineState *machine = MACHINE(qdev_get_machine()); + PCMachineState *pcms = PC_MACHINE(machine); linux_boot = (kernel_filename != NULL); @@ -1205,8 +1208,7 @@ FWCfgState *pc_memory_init(MemoryRegion *system_memory, * with older qemus that used qemu_ram_alloc(). */ ram = g_malloc(sizeof(*ram)); - memory_region_init_ram(ram, NULL, "pc.ram", - below_4g_mem_size + above_4g_mem_size); + memory_region_init_ram(ram, NULL, "pc.ram", ram_size); vmstate_register_ram_global(ram); *ram_memory = ram; ram_below_4g = g_malloc(sizeof(*ram_below_4g)); @@ -1223,6 +1225,26 @@ FWCfgState *pc_memory_init(MemoryRegion *system_memory, e820_add_entry(0x100000000ULL, above_4g_mem_size, E820_RAM); } + /* initialize hotplug memory address space */ + if (ram_size < machine->maxram_size) { + ram_addr_t hotplug_mem_size = + machine->maxram_size - ram_size; + + pcms->hotplug_memory_base = + ROUND_UP(0x100000000ULL + above_4g_mem_size, 1ULL << 30); + + if ((pcms->hotplug_memory_base + hotplug_mem_size) < + hotplug_mem_size) { + error_report("unsupported amount of maximum memory: " RAM_ADDR_FMT, + machine->maxram_size); + exit(EXIT_FAILURE); + } + + memory_region_init(&pcms->hotplug_memory, OBJECT(pcms), + "hotplug-memory", hotplug_mem_size); + memory_region_add_subregion(system_memory, pcms->hotplug_memory_base, + &pcms->hotplug_memory); + } /* Initialize PC system firmware */ pc_system_firmware_init(rom_memory, guest_info->isapc_ram_fw); |
