numa: add -numa node,memdev= option
[qemu.git] / include / sysemu / hostmem.h
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 #ifndef QEMU_RAM_H
13 #define QEMU_RAM_H
14
15 #include "qom/object.h"
16 #include "qapi/error.h"
17 #include "exec/memory.h"
18 #include "qemu/option.h"
19
20 #define TYPE_MEMORY_BACKEND "memory-backend"
21 #define MEMORY_BACKEND(obj) \
22 OBJECT_CHECK(HostMemoryBackend, (obj), TYPE_MEMORY_BACKEND)
23 #define MEMORY_BACKEND_GET_CLASS(obj) \
24 OBJECT_GET_CLASS(HostMemoryBackendClass, (obj), TYPE_MEMORY_BACKEND)
25 #define MEMORY_BACKEND_CLASS(klass) \
26 OBJECT_CLASS_CHECK(HostMemoryBackendClass, (klass), TYPE_MEMORY_BACKEND)
27
28 typedef struct HostMemoryBackend HostMemoryBackend;
29 typedef struct HostMemoryBackendClass HostMemoryBackendClass;
30
31 /**
32 * HostMemoryBackendClass:
33 * @parent_class: opaque parent class container
34 */
35 struct HostMemoryBackendClass {
36 ObjectClass parent_class;
37 };
38
39 /**
40 * @HostMemoryBackend
41 *
42 * @parent: opaque parent object container
43 * @size: amount of memory backend provides
44 * @id: unique identification string in memdev namespace
45 * @mr: MemoryRegion representing host memory belonging to backend
46 */
47 struct HostMemoryBackend {
48 /* private */
49 Object parent;
50
51 /* protected */
52 uint64_t size;
53
54 MemoryRegion mr;
55 };
56
57 MemoryRegion *host_memory_backend_get_memory(HostMemoryBackend *backend,
58 Error **errp);
59
60 #endif