fix copy_blocks

vllm/attention/backends/ipex_attn.py

@@ -49,14 +49,18 @@ def swap_blocks(
         dst_kv_cache: torch.Tensor,
         src_to_dst: torch.Tensor,
     ) -> None:
-        PagedAttention.swap_blocks(src_kv_cache, dst_kv_cache, src_to_dst)
+        from vllm._ipex_ops import ipex_ops as ops
+        ops.swap_blocks(src_kv_cache, dst_kv_cache, src_to_dst)
 
     @staticmethod
     def copy_blocks(
         kv_caches: List[torch.Tensor],
         src_to_dists: torch.Tensor,
     ) -> None:
-        PagedAttention.copy_blocks(kv_caches, src_to_dists)
+        from vllm._ipex_ops import ipex_ops as ops
+        key_caches = [kv_cache[0] for kv_cache in kv_caches]
+        value_caches = [kv_cache[1] for kv_cache in kv_caches]
+        ops.copy_blocks(key_caches, value_caches, src_to_dists)
 
 
 @dataclass