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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); |