[AMD] fix: hip rotary fallback avoiding CUDA JIT

python/sglang/srt/layers/rotary_embedding.py

@@ -350,6 +350,20 @@ def forward_cpu(
                 positions, query, key, offsets, fused_set_kv_buffer_arg
             )
 
+    def forward_hip(
+        self,
+        positions: torch.Tensor,
+        query: torch.Tensor,
+        key: torch.Tensor,
+        offsets: Optional[torch.Tensor] = None,
+        fused_set_kv_buffer_arg: Optional[FusedSetKVBufferArg] = None,
+    ) -> Tuple[torch.Tensor, torch.Tensor]:
+        # The fallback JIT kernel depends on CUDA toolchain discovery in tvm_ffi.
+        # On ROCm-only environments this can fail with missing CUDA_HOME.
+        return self.forward_native(
+            positions, query, key, offsets, fused_set_kv_buffer_arg
+        )
+
     def forward_cuda(
         self,
         positions: torch.Tensor,