---
id: pr-vllm-33600
repo: vllm-project/vllm
pr: 33600
title: '[Attention] Refactor `check_and_update_config`'
author: MatthewBonanni
date: '2026-02-18'
url: https://github.com/vllm-project/vllm/pull/33600
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 7743152957236f21fc36f0402f9678159976ccc5
inclusion_reason: defer
changed_paths:
- vllm/config/cache.py
- vllm/engine/arg_utils.py
- vllm/platforms/cuda.py
- vllm/v1/attention/backend.py
artifact_dir: evidence/pull-bundles/vllm/gh-33600
head_ref_oid: a31033964a794fc848445c3060f8dd5fa86c17d2
---
# [Attention] Refactor `check_and_update_config`

- Repository: `vllm-project/vllm`
- PR: [33600](https://github.com/vllm-project/vllm/pull/33600)
- Decision: `defer`
- Reason: defer

## Changed Paths

- `vllm/config/cache.py`
- `vllm/engine/arg_utils.py`
- `vllm/platforms/cuda.py`
- `vllm/v1/attention/backend.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-33600`
