1 /* 2 * QEMU Host Memory Backend 3 * 4 * Copyright (C) 2013-2014 Red Hat Inc 5 * 6 * Authors: 7 * Igor Mammedov <imammedo@redhat.com> 8 * 9 * This work is licensed under the terms of the GNU GPL, version 2 or later. 10 * See the COPYING file in the top-level directory. 11 */ 12 #include "qemu/osdep.h" 13 #include "sysemu/hostmem.h" 14 #include "qapi/error.h" 15 #include "qom/object_interfaces.h" 16 17 #define TYPE_MEMORY_BACKEND_RAM "memory-backend-ram" 18 19 static void 20 ram_backend_memory_alloc(HostMemoryBackend *backend, Error **errp) 21 { 22 char *name; 23 24 if (!backend->size) { 25 error_setg(errp, "can't create backend with size 0"); 26 return; 27 } 28 29 name = host_memory_backend_get_name(backend); 30 memory_region_init_ram_shared_nomigrate(&backend->mr, OBJECT(backend), name, 31 backend->size, backend->share, errp); 32 g_free(name); 33 } 34 35 static void 36 ram_backend_class_init(ObjectClass *oc, void *data) 37 { 38 HostMemoryBackendClass *bc = MEMORY_BACKEND_CLASS(oc); 39 40 bc->alloc = ram_backend_memory_alloc; 41 } 42 43 static const TypeInfo ram_backend_info = { 44 .name = TYPE_MEMORY_BACKEND_RAM, 45 .parent = TYPE_MEMORY_BACKEND, 46 .class_init = ram_backend_class_init, 47 }; 48 49 static void register_types(void) 50 { 51 type_register_static(&ram_backend_info); 52 } 53 54 type_init(register_types); 55