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 13 #include "qemu/osdep.h" 14 #include "sysemu/hostmem.h" 15 #include "qapi/error.h" 16 #include "qemu/module.h" 17 #include "qom/object_interfaces.h" 18 19 #define TYPE_MEMORY_BACKEND_RAM "memory-backend-ram" 20 21 static void 22 ram_backend_memory_alloc(HostMemoryBackend *backend, Error **errp) 23 { 24 char *name; 25 26 if (!backend->size) { 27 error_setg(errp, "can't create backend with size 0"); 28 return; 29 } 30 31 name = host_memory_backend_get_name(backend); 32 memory_region_init_ram_shared_nomigrate(&backend->mr, OBJECT(backend), name, 33 backend->size, backend->share, errp); 34 g_free(name); 35 } 36 37 static void 38 ram_backend_class_init(ObjectClass *oc, void *data) 39 { 40 HostMemoryBackendClass *bc = MEMORY_BACKEND_CLASS(oc); 41 42 bc->alloc = ram_backend_memory_alloc; 43 } 44 45 static const TypeInfo ram_backend_info = { 46 .name = TYPE_MEMORY_BACKEND_RAM, 47 .parent = TYPE_MEMORY_BACKEND, 48 .class_init = ram_backend_class_init, 49 }; 50 51 static void register_types(void) 52 { 53 type_register_static(&ram_backend_info); 54 } 55 56 type_init(register_types); 57