From 90ae91760372016ca7e92d8ab5817ee2844ea98a Mon Sep 17 00:00:00 2001
From: Xuejun <Xuejun.Zhai@intel.com>
Date: Mon, 15 Jun 2026 15:52:31 +0800
Subject: [PATCH] OpenVINO backend: fix accuracy issue for op CONCAT with i64
 precision

---
 ggml/src/ggml-openvino/ggml-openvino.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/ggml/src/ggml-openvino/ggml-openvino.cpp b/ggml/src/ggml-openvino/ggml-openvino.cpp
index 7286289c76b3..943aef864535 100644
--- a/ggml/src/ggml-openvino/ggml-openvino.cpp
+++ b/ggml/src/ggml-openvino/ggml-openvino.cpp
@@ -884,6 +884,12 @@ static bool mul_mat_id_requires_large_tmp(const ggml_tensor * op) {
 
 static bool is_op_unsupported_case(const ggml_tensor * op) {
     switch (op->op) {
+    case GGML_OP_CONCAT: {
+        if (op->type == GGML_TYPE_I64) {
+            return true;
+        }
+        break;
+    }
     case GGML_OP_GET_ROWS:
     case GGML_OP_SET_ROWS: {
         if (op->ne[3] != 1) {