4185 New hash algorithm support

@@ -143,16 +143,17 @@
         {{NULL,                 NULL},                  0, 0,   "zilog"},
         {{fletcher_2_native,    fletcher_2_byteswap},   0, 0,   "fletcher2"},
         {{fletcher_4_native,    fletcher_4_byteswap},   1, 0,   "fletcher4"},
         {{zio_checksum_SHA256,  zio_checksum_SHA256},   1, 0,   "SHA256"},
         {{NULL,                 NULL},                  0, 0,   "zilog2"},
+        {{zio_checksum_SHA512,  NULL},                  0, 0,   "SHA512"}
 };
 
 /*
  * zio_checksum_verify: Provides support for checksum verification.
  *
- * Fletcher2, Fletcher4, and SHA256 are supported.
+ * Fletcher2, Fletcher4, SHA-256 and SHA-512/256 are supported.
  *
  * Return:
  *      -1 = Failure
  *       0 = Success
  */

@@ -964,10 +965,11 @@
  * When this list is updated the version number in usr/src/grub/capability
  * must be incremented to ensure the new grub gets installed.
  */
 static const char *spa_feature_names[] = {
         "org.illumos:lz4_compress",
+        "org.illumos:sha512",
         NULL
 };
 
 /*
  * Checks whether the MOS features that are active are supported by this