diff options
| -rw-r--r-- | hw/i386/pc.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 021ec44768..3d732cf5a5 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1545,6 +1545,37 @@ void qemu_register_pc_machine(QEMUMachine *m) g_free(name); } +static int pc_dimm_count(Object *obj, void *opaque) +{ + int *count = opaque; + + if (object_dynamic_cast(obj, TYPE_PC_DIMM)) { + (*count)++; + } + + object_child_foreach(obj, pc_dimm_count, opaque); + return 0; +} + +static int pc_existing_dimms_capacity(Object *obj, void *opaque) +{ + Error *local_err = NULL; + uint64_t *size = opaque; + + if (object_dynamic_cast(obj, TYPE_PC_DIMM)) { + (*size) += object_property_get_int(obj, PC_DIMM_SIZE_PROP, &local_err); + + if (local_err) { + qerror_report_err(local_err); + error_free(local_err); + return 1; + } + } + + object_child_foreach(obj, pc_dimm_count, opaque); + return 0; +} + static void pc_dimm_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { @@ -1556,6 +1587,7 @@ static void pc_dimm_plug(HotplugHandler *hotplug_dev, PCDIMMDevice *dimm = PC_DIMM(dev); PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm); MemoryRegion *mr = ddc->get_memory_region(dimm); + uint64_t existing_dimms_capacity = 0; uint64_t align = TARGET_PAGE_SIZE; uint64_t addr; @@ -1576,6 +1608,19 @@ static void pc_dimm_plug(HotplugHandler *hotplug_dev, goto out; } + if (pc_existing_dimms_capacity(OBJECT(machine), &existing_dimms_capacity)) { + error_setg(&local_err, "failed to get total size of existing DIMMs"); + 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 0x" RAM_ADDR_FMT, + existing_dimms_capacity, machine->maxram_size); + goto out; + } + object_property_set_int(OBJECT(dev), addr, PC_DIMM_ADDR_PROP, &local_err); if (local_err) { goto out; |