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-rw-r--r--include/migration/vmstate.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/migration/vmstate.h b/include/migration/vmstate.h
index 71a8a95641..9a001bd28f 100644
--- a/include/migration/vmstate.h
+++ b/include/migration/vmstate.h
@@ -101,6 +101,7 @@ enum VMStateFlags {
     VMS_VARRAY_UINT8     = 0x400,  /* Array with size in uint8_t field*/
     VMS_VARRAY_UINT32    = 0x800,  /* Array with size in uint32_t field*/
     VMS_MUST_EXIST       = 0x1000, /* Field must exist in input */
+    VMS_ALLOC            = 0x2000, /* Alloc a buffer on the destination */
 };
 
 typedef struct {
@@ -429,6 +430,16 @@ extern const VMStateInfo vmstate_info_bitmap;
     .offset     = offsetof(_state, _field),                          \
 }
 
+#define VMSTATE_STRUCT_VARRAY_ALLOC(_field, _state, _field_num, _version, _vmsd, _type) {\
+    .name       = (stringify(_field)),                               \
+    .version_id = (_version),                                        \
+    .vmsd       = &(_vmsd),                                          \
+    .num_offset = vmstate_offset_value(_state, _field_num, int32_t), \
+    .size       = sizeof(_type),                                     \
+    .flags      = VMS_STRUCT|VMS_VARRAY_INT32|VMS_ALLOC|VMS_POINTER, \
+    .offset     = vmstate_offset_pointer(_state, _field, _type),     \
+}
+
 #define VMSTATE_STATIC_BUFFER(_field, _state, _version, _test, _start, _size) { \
     .name         = (stringify(_field)),                             \
     .version_id   = (_version),                                      \