void pc_dimm_memory_plug(DeviceState *dev, MemoryHotplugState *hpms, MemoryRegion *mr, uint64_t align, Error **errp) { int slot; MachineState *machine = MACHINE(qdev_get_machine()); PCDIMMDevice *dimm = PC_DIMM(dev); Error *local_err = NULL; uint64_t existing_dimms_capacity = 0; uint64_t addr; addr = object_property_get_int(OBJECT(dimm), PC_DIMM_ADDR_PROP, &local_err); if (local_err) { goto out; } addr = pc_dimm_get_free_addr(hpms->base, memory_region_size(&hpms->mr), !addr ? NULL : &addr, align, memory_region_size(mr), &local_err); if (local_err) { goto out; } existing_dimms_capacity = pc_existing_dimms_capacity(&local_err); if (local_err) { goto out; } if (existing_dimms_capacity + memory_region_size(mr) > machine->maxram_size - machine->ram_size) { error_setg(&local_err, "not enough space, currently 0x%" PRIx64 " in use of total hot pluggable 0x" RAM_ADDR_FMT, existing_dimms_capacity, machine->maxram_size - machine->ram_size); goto out; } object_property_set_int(OBJECT(dev), addr, PC_DIMM_ADDR_PROP, &local_err); if (local_err) { goto out; } trace_mhp_pc_dimm_assigned_address(addr); slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, &local_err); if (local_err) { goto out; } slot = pc_dimm_get_free_slot(slot == PC_DIMM_UNASSIGNED_SLOT ? NULL : &slot, machine->ram_slots, &local_err); if (local_err) { goto out; } object_property_set_int(OBJECT(dev), slot, PC_DIMM_SLOT_PROP, &local_err); if (local_err) { goto out; } trace_mhp_pc_dimm_assigned_slot(slot); if (kvm_enabled() && !kvm_has_free_slot(machine)) { error_setg(&local_err, "hypervisor has no free memory slots left"); goto out; } if (!vhost_has_free_slot()) { error_setg(&local_err, "a used vhost backend has no free" " memory slots left"); goto out; } memory_region_add_subregion(&hpms->mr, addr - hpms->base, mr); vmstate_register_ram(mr, dev); numa_set_mem_node_id(addr, memory_region_size(mr), dimm->node); out: error_propagate(errp, local_err); }