+static void spapr_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
+ Error **errp)
+{
+ PCDIMMDevice *dimm = PC_DIMM(dev);
+ PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm);
+ MemoryRegion *mr = ddc->get_memory_region(dimm);
+ uint64_t size = memory_region_size(mr);
+ char *mem_dev;
+
+ if (size % SPAPR_MEMORY_BLOCK_SIZE) {
+ error_setg(errp, "Hotplugged memory size must be a multiple of "
+ "%lld MB", SPAPR_MEMORY_BLOCK_SIZE / M_BYTE);
+ return;
+ }
+
+ mem_dev = object_property_get_str(OBJECT(dimm), PC_DIMM_MEMDEV_PROP, NULL);
+ if (mem_dev && !kvmppc_is_mem_backend_page_size_ok(mem_dev)) {
+ error_setg(errp, "Memory backend has bad page size. "
+ "Use 'memory-backend-file' with correct mem-path.");
+ return;
+ }
+}
+