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 | |