bd9262d95f
This allows the superclass to set various policies on the memory region that the subclass creates. Drops hostmem-ram's complete method accordingly. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Hu Tao <hutao@cn.fujitsu.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
54 lines
1.2 KiB
C
54 lines
1.2 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.
|
|
*/
|
|
#include "sysemu/hostmem.h"
|
|
#include "qom/object_interfaces.h"
|
|
|
|
#define TYPE_MEMORY_BACKEND_RAM "memory-backend-ram"
|
|
|
|
|
|
static void
|
|
ram_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
|
|
{
|
|
char *path;
|
|
|
|
if (!backend->size) {
|
|
error_setg(errp, "can't create backend with size 0");
|
|
return;
|
|
}
|
|
|
|
path = object_get_canonical_path_component(OBJECT(backend));
|
|
memory_region_init_ram(&backend->mr, OBJECT(backend), path,
|
|
backend->size);
|
|
g_free(path);
|
|
}
|
|
|
|
static void
|
|
ram_backend_class_init(ObjectClass *oc, void *data)
|
|
{
|
|
HostMemoryBackendClass *bc = MEMORY_BACKEND_CLASS(oc);
|
|
|
|
bc->alloc = ram_backend_memory_alloc;
|
|
}
|
|
|
|
static const TypeInfo ram_backend_info = {
|
|
.name = TYPE_MEMORY_BACKEND_RAM,
|
|
.parent = TYPE_MEMORY_BACKEND,
|
|
.class_init = ram_backend_class_init,
|
|
};
|
|
|
|
static void register_types(void)
|
|
{
|
|
type_register_static(&ram_backend_info);
|
|
}
|
|
|
|
type_init(register_types);
|