---
id: pr-vllm-35122
repo: vllm-project/vllm
pr: 35122
title: Reapply [Attention] Refactor `check_and_update_config`
author: MatthewBonanni
date: '2026-03-09'
url: https://github.com/vllm-project/vllm/pull/35122
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 77a73458e3ae8b5b7a2a13f78d3a6b4d39b1414d
inclusion_reason: defer
changed_paths:
- tests/kernels/attention/test_attention_selector.py
- tests/models/multimodal/processing/test_tensor_schema.py
- tests/v1/spec_decode/test_eagle.py
- vllm/config/cache.py
- vllm/config/vllm.py
- vllm/distributed/kv_transfer/kv_connector/utils.py
- vllm/distributed/kv_transfer/kv_connector/v1/moriio/moriio_connector.py
- vllm/engine/arg_utils.py
- vllm/model_executor/layers/attention/attention.py
- vllm/model_executor/layers/attention/chunked_local_attention.py
- vllm/model_executor/layers/attention/cross_attention.py
- vllm/model_executor/layers/attention/encoder_only_attention.py
- vllm/model_executor/layers/attention/mla_attention.py
- vllm/model_executor/layers/attention/static_sink_attention.py
- vllm/model_executor/models/config.py
- vllm/model_executor/models/whisper_causal.py
- vllm/platforms/cpu.py
- vllm/platforms/cuda.py
- vllm/platforms/interface.py
- vllm/platforms/rocm.py
- vllm/platforms/xpu.py
- vllm/v1/attention/backend.py
- vllm/v1/attention/backends/mla/flashattn_mla.py
- vllm/v1/attention/backends/mla/flashinfer_mla.py
- vllm/v1/attention/backends/mla/flashinfer_mla_sparse.py
- vllm/v1/attention/backends/mla/flashmla.py
- vllm/v1/attention/selector.py
- vllm/v1/engine/core.py
- vllm/v1/executor/multiproc_executor.py
- vllm/v1/executor/ray_executor.py
- vllm/v1/executor/uniproc_executor.py
- vllm/v1/worker/gpu_model_runner.py
artifact_dir: evidence/pull-bundles/vllm/gh-35122
head_ref_oid: 77457688d0f7372dd4a3f917d512231f4ec8c1d3
---
# Reapply [Attention] Refactor `check_and_update_config`

- Repository: `vllm-project/vllm`
- PR: [35122](https://github.com/vllm-project/vllm/pull/35122)
- Decision: `defer`
- Reason: defer

## Changed Paths

- `tests/kernels/attention/test_attention_selector.py`
- `tests/models/multimodal/processing/test_tensor_schema.py`
- `tests/v1/spec_decode/test_eagle.py`
- `vllm/config/cache.py`
- `vllm/config/vllm.py`
- `vllm/distributed/kv_transfer/kv_connector/utils.py`
- `vllm/distributed/kv_transfer/kv_connector/v1/moriio/moriio_connector.py`
- `vllm/engine/arg_utils.py`
- `vllm/model_executor/layers/attention/attention.py`
- `vllm/model_executor/layers/attention/chunked_local_attention.py`
- `vllm/model_executor/layers/attention/cross_attention.py`
- `vllm/model_executor/layers/attention/encoder_only_attention.py`
- `vllm/model_executor/layers/attention/mla_attention.py`
- `vllm/model_executor/layers/attention/static_sink_attention.py`
- `vllm/model_executor/models/config.py`
- `vllm/model_executor/models/whisper_causal.py`
- `vllm/platforms/cpu.py`
- `vllm/platforms/cuda.py`
- `vllm/platforms/interface.py`
- `vllm/platforms/rocm.py`
- `vllm/platforms/xpu.py`
- `vllm/v1/attention/backend.py`
- `vllm/v1/attention/backends/mla/flashattn_mla.py`
- `vllm/v1/attention/backends/mla/flashinfer_mla.py`
- `vllm/v1/attention/backends/mla/flashinfer_mla_sparse.py`
- `vllm/v1/attention/backends/mla/flashmla.py`
- `vllm/v1/attention/selector.py`
- `vllm/v1/engine/core.py`
- `vllm/v1/executor/multiproc_executor.py`
- `vllm/v1/executor/ray_executor.py`
- `vllm/v1/executor/uniproc_executor.py`
- `vllm/v1/worker/gpu_model_runner.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-35122`
