diff options
| author | Lin Ma <lma@suse.com> | 2015-03-30 16:36:29 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-04-01 10:06:38 +0200 |
| commit | 36bce5ca5da7a7dbdc5001dc65b40b7439472106 (patch) | |
| tree | c3e9d14330ebf092e3278460e4a51fb5442d75e2 /backends/hostmem.c | |
| parent | d6edb15576643ab348a9f73e115c2e037edf7460 (diff) | |
hostmem: Prevent removing an in-use memory backend
showing a memory device whose memdev is removed leads an assert:
(qemu) object_add memory-backend-ram,id=ram0,size=128M
(qemu) device_add pc-dimm,id=d0,memdev=ram0
(qemu) object_del ram0
(qemu) info memory-devices
**
ERROR:qom/object.c:1274:object_get_canonical_path_component:\
assertion failed: (obj->parent != NULL)
Aborted
The patch prevents removing an in-use mem backend and error out.
Signed-off-by: Lin Ma <lma@suse.com>
Message-Id: <1427704589-7688-3-git-send-email-lma@suse.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'backends/hostmem.c')
| -rw-r--r-- | backends/hostmem.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/backends/hostmem.c b/backends/hostmem.c index 99e8f99da8..b7b6cf8f4a 100644 --- a/backends/hostmem.c +++ b/backends/hostmem.c @@ -335,12 +335,26 @@ host_memory_backend_memory_complete(UserCreatable *uc, Error **errp) } } +static bool +host_memory_backend_can_be_deleted(UserCreatable *uc, Error **errp) +{ + MemoryRegion *mr; + + mr = host_memory_backend_get_memory(MEMORY_BACKEND(uc), errp); + if (memory_region_is_mapped(mr)) { + return false; + } else { + return true; + } +} + static void host_memory_backend_class_init(ObjectClass *oc, void *data) { UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc); ucc->complete = host_memory_backend_memory_complete; + ucc->can_be_deleted = host_memory_backend_can_be_deleted; } static const TypeInfo host_memory_backend_info = { |