diff options
Diffstat (limited to 'backends')
| -rw-r--r-- | backends/hostmem.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/backends/hostmem.c b/backends/hostmem.c index be0c3b079f..c6c1ff5b99 100644 --- a/backends/hostmem.c +++ b/backends/hostmem.c @@ -494,6 +494,16 @@ host_memory_backend_class_init(ObjectClass *oc, void *data) host_memory_backend_get_share, host_memory_backend_set_share); object_class_property_set_description(oc, "share", "Mark the memory as private to QEMU or shared"); + /* + * Do not delete/rename option. This option must be considered stable + * (as if it didn't have the 'x-' prefix including deprecation period) as + * long as 4.0 and older machine types exists. + * Option will be used by upper layers to override (disable) canonical path + * for ramblock-id set by compat properties on old machine types ( <= 4.0), + * to keep migration working when backend is used for main RAM with + * -machine memory-backend= option (main RAM historically used prefix-less + * ramblock-id). + */ object_class_property_add_bool(oc, "x-use-canonical-path-for-ramblock-id", host_memory_backend_get_use_canonical_path, host_memory_backend_set_use_canonical_path); |