static void nvdimm_realize(PCDIMMDevice *dimm, Error **errp) { MemoryRegion *mr = host_memory_backend_get_memory(dimm->hostmem, errp); NVDIMMDevice *nvdimm = NVDIMM(dimm); uint64_t align, pmem_size, size = memory_region_size(mr); align = memory_region_get_alignment(mr); pmem_size = size - nvdimm->label_size; nvdimm->label_data = memory_region_get_ram_ptr(mr) + pmem_size; pmem_size = QEMU_ALIGN_DOWN(pmem_size, align); if (size <= nvdimm->label_size || !pmem_size) { HostMemoryBackend *hostmem = dimm->hostmem; char *path = object_get_canonical_path_component(OBJECT(hostmem)); error_setg(errp, "the size of memdev %s (0x%" PRIx64 ") is too " "small to contain nvdimm label (0x%" PRIx64 ") and " "aligned PMEM (0x%" PRIx64 ")", path, memory_region_size(mr), nvdimm->label_size, align); return; } memory_region_init_alias(&nvdimm->nvdimm_mr, OBJECT(dimm), "nvdimm-memory", mr, 0, pmem_size); nvdimm->nvdimm_mr.align = align; }