2 * QEMU Host Memory Backend
4 * Copyright (C) 2013-2014 Red Hat Inc
7 * Igor Mammedov <imammedo@redhat.com>
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.
13 #ifndef SYSEMU_HOSTMEM_H
14 #define SYSEMU_HOSTMEM_H
16 #include "sysemu/sysemu.h" /* for MAX_NODES */
17 #include "qom/object.h"
18 #include "exec/memory.h"
19 #include "qemu/bitmap.h"
21 #define TYPE_MEMORY_BACKEND "memory-backend"
22 #define MEMORY_BACKEND(obj) \
23 OBJECT_CHECK(HostMemoryBackend, (obj), TYPE_MEMORY_BACKEND)
24 #define MEMORY_BACKEND_GET_CLASS(obj) \
25 OBJECT_GET_CLASS(HostMemoryBackendClass, (obj), TYPE_MEMORY_BACKEND)
26 #define MEMORY_BACKEND_CLASS(klass) \
27 OBJECT_CLASS_CHECK(HostMemoryBackendClass, (klass), TYPE_MEMORY_BACKEND)
29 typedef struct HostMemoryBackend HostMemoryBackend
;
30 typedef struct HostMemoryBackendClass HostMemoryBackendClass
;
33 * HostMemoryBackendClass:
34 * @parent_class: opaque parent class container
36 struct HostMemoryBackendClass
{
37 ObjectClass parent_class
;
39 void (*alloc
)(HostMemoryBackend
*backend
, Error
**errp
);
45 * @parent: opaque parent object container
46 * @size: amount of memory backend provides
47 * @mr: MemoryRegion representing host memory belonging to backend
49 struct HostMemoryBackend
{
57 bool prealloc
, force_prealloc
, is_mapped
;
58 DECLARE_BITMAP(host_nodes
, MAX_NODES
+ 1);
64 bool host_memory_backend_mr_inited(HostMemoryBackend
*backend
);
65 MemoryRegion
*host_memory_backend_get_memory(HostMemoryBackend
*backend
,
68 void host_memory_backend_set_mapped(HostMemoryBackend
*backend
, bool mapped
);
69 bool host_memory_backend_is_mapped(HostMemoryBackend
*backend
);