---
id: pr-vllm-36263
repo: vllm-project/vllm
pr: 36263
title: 'feat(attention): extract KV-cache update from FlexAttention backend'
author: cong-or
date: '2026-03-09'
url: https://github.com/vllm-project/vllm/pull/36263
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 747431044df6b15c7b359b5720cc7368c662c232
inclusion_reason: defer
changed_paths:
- vllm/v1/attention/backends/flex_attention.py
artifact_dir: evidence/pull-bundles/vllm/gh-36263
head_ref_oid: 960244ed702cab1c33e5bb64a375a0cdcb933d5e
---
# feat(attention): extract KV-cache update from FlexAttention backend

- Repository: `vllm-project/vllm`
- PR: [36263](https://github.com/vllm-project/vllm/pull/36263)
- Decision: `defer`
- Reason: defer

## Changed Paths

- `vllm/v1/attention/backends/flex_attention.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-36263`
