1f07048933
Provides framework for splitting host RAM allocation/ policies into a separate backend that could be used by devices. Initially only legacy RAM backend is provided, which uses memory_region_init_ram() allocator and compatible with every CLI option that affects memory_region_init_ram(). Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
/*
|
|
* QEMU Host Memory Backend
|
|
*
|
|
* Copyright (C) 2013-2014 Red Hat Inc
|
|
*
|
|
* Authors:
|
|
* Igor Mammedov <imammedo@redhat.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*/
|
|
#ifndef QEMU_RAM_H
|
|
#define QEMU_RAM_H
|
|
|
|
#include "qom/object.h"
|
|
#include "qapi/error.h"
|
|
#include "exec/memory.h"
|
|
#include "qemu/option.h"
|
|
|
|
#define TYPE_MEMORY_BACKEND "memory-backend"
|
|
#define MEMORY_BACKEND(obj) \
|
|
OBJECT_CHECK(HostMemoryBackend, (obj), TYPE_MEMORY_BACKEND)
|
|
#define MEMORY_BACKEND_GET_CLASS(obj) \
|
|
OBJECT_GET_CLASS(HostMemoryBackendClass, (obj), TYPE_MEMORY_BACKEND)
|
|
#define MEMORY_BACKEND_CLASS(klass) \
|
|
OBJECT_CLASS_CHECK(HostMemoryBackendClass, (klass), TYPE_MEMORY_BACKEND)
|
|
|
|
typedef struct HostMemoryBackend HostMemoryBackend;
|
|
typedef struct HostMemoryBackendClass HostMemoryBackendClass;
|
|
|
|
/**
|
|
* HostMemoryBackendClass:
|
|
* @parent_class: opaque parent class container
|
|
*/
|
|
struct HostMemoryBackendClass {
|
|
ObjectClass parent_class;
|
|
};
|
|
|
|
/**
|
|
* @HostMemoryBackend
|
|
*
|
|
* @parent: opaque parent object container
|
|
* @size: amount of memory backend provides
|
|
* @id: unique identification string in memdev namespace
|
|
* @mr: MemoryRegion representing host memory belonging to backend
|
|
*/
|
|
struct HostMemoryBackend {
|
|
/* private */
|
|
Object parent;
|
|
|
|
/* protected */
|
|
uint64_t size;
|
|
|
|
MemoryRegion mr;
|
|
};
|
|
|
|
MemoryRegion *host_memory_backend_get_memory(HostMemoryBackend *backend,
|
|
Error **errp);
|
|
|
|
#endif
|