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-rw-r--r--include/hw/s390x/css.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/hw/s390x/css.h b/include/hw/s390x/css.h
index ba72ee3dd2..8289e45837 100644
--- a/include/hw/s390x/css.h
+++ b/include/hw/s390x/css.h
@@ -333,4 +333,10 @@ static inline int ccw_dstream_read_buf(CcwDataStream *cds, void *buff, int len)
#define ccw_dstream_read(cds, v) ccw_dstream_read_buf((cds), &(v), sizeof(v))
#define ccw_dstream_write(cds, v) ccw_dstream_write_buf((cds), &(v), sizeof(v))
+/**
+ * true if (vmstate based) migration of the channel subsystem
+ * is enabled, false if it is disabled.
+ */
+extern bool css_migration_enabled;
+
#endif