[Rebase] Rebase to vLLM 0.30.0 (#7820)

Signed-off-by: tzhouam <tzhouam@connect.ust.hk>
Signed-off-by: Gao Han <hgaoaf@connect.ust.hk>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Gao Han <hgaoaf@connect.ust.hk>

tests/diffusion/diffusion_kv/test_block_tables.py

@@ -279,19 +279,19 @@ def _install_native_modules(monkeypatch: pytest.MonkeyPatch, events: list[tuple]
         group = SimpleNamespace(get_metadata_builder=lambda _index: SimpleNamespace(reorder_batch_threshold=None))
         return [[group], [group]], "cg-support", [4, 8]
 
-    # vLLM 0.29 dropped attn_groups and cache_dtype from init_kv_cache: the
-    # layout now rides on the resolved CacheConfig.kv_cache_layout instead.
+    # f2aad6aa70 (#56888): first arg is forward_context; return a cache dict.
     def init_cache(
-        runner_kv_caches,
         forward_context,
         kv_cache_config,
         device,
         kernel_block_sizes,
         vllm_config,
+        kv_cache_allocation_context=None,
+        *,
+        block_tables=None,
     ):
         events.append(("cache", kv_cache_config, kernel_block_sizes))
-        runner_kv_caches.extend(["cache-0", "cache-1"])
-        return {"layer-0": "tensor-0", "layer-1": "tensor-1"}
+        return {"layer-0": "cache-0", "layer-1": "cache-1"}
 
     monkeypatch.setattr(model_runner_backend_module, "init_attn_backend", init_backend)
     monkeypatch.setattr(model_runner_backend_module, "init_kv_cache", init_cache)
@@ -431,8 +431,7 @@ def test_initialize_failure_does_not_publish_partial_cache_state(
         ],
     )
 
-    def fail_init_cache(runner_kv_caches, *_args, **_kwargs):
-        runner_kv_caches.append("partial-cache")
+    def fail_init_cache(forward_context, *_args, **_kwargs):
         backend._kv_cache_layer_adapters["layer-0"].kv_cache = "partial-binding"
         raise RuntimeError("cache binding failed")