diff options
author | Igor Mammedov <imammedo@redhat.com> | 2014-06-06 17:54:29 +0200 |
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committer | Michael S. Tsirkin <mst@redhat.com> | 2014-06-18 21:10:30 +0300 |
commit | 1f07048933d9c21acb40bce18af4f3ad6bae59b6 (patch) | |
tree | 2533a08b489ebf6abb7b4d6f56619fa13a987ce5 /backends/hostmem-ram.c | |
parent | 2d9c2725f7bd08ffaf824b8c823f1423258ec78d (diff) |
add memdev backend infrastructure
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>
Diffstat (limited to 'backends/hostmem-ram.c')
-rw-r--r-- | backends/hostmem-ram.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/backends/hostmem-ram.c b/backends/hostmem-ram.c new file mode 100644 index 0000000000..bba2ebcce8 --- /dev/null +++ b/backends/hostmem-ram.c @@ -0,0 +1,54 @@ +/* + * 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_init(UserCreatable *uc, Error **errp) +{ + HostMemoryBackend *backend = MEMORY_BACKEND(uc); + 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) +{ + UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc); + + ucc->complete = ram_backend_memory_init; +} + +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); |