1 files changed, 11 insertions, 0 deletions
diff --git a/util/hbitmap.c b/util/hbitmap.c
index 0c1591a594..21535cc90b 100644
--- a/util/hbitmap.c
+++ b/util/hbitmap.c
@@ -13,6 +13,7 @@
 #include "qemu/hbitmap.h"
 #include "qemu/host-utils.h"
 #include "trace.h"
+#include "crypto/hash.h"
 
 /* HBitmaps provides an array of bits.  The bits are stored as usual in an
  * array of unsigned longs, but HBitmap is also optimized to provide fast
@@ -727,3 +728,13 @@ void hbitmap_free_meta(HBitmap *hb)
     hbitmap_free(hb->meta);
     hb->meta = NULL;
 }
+
+char *hbitmap_sha256(const HBitmap *bitmap, Error **errp)
+{
+    size_t size = bitmap->sizes[HBITMAP_LEVELS - 1] * sizeof(unsigned long);
+    char *data = (char *)bitmap->levels[HBITMAP_LEVELS - 1];
+    char *hash = NULL;
+    qcrypto_hash_digest(QCRYPTO_HASH_ALG_SHA256, data, size, &hash, errp);
+
+    return hash;
+}