---
id: pr-vllm-23171
repo: vllm-project/vllm
pr: 23171
title: '[Attention] Unify mamba and attention backend selection'
author: ayushsatyam146
date: '2025-08-25'
url: https://github.com/vllm-project/vllm/pull/23171
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: 5c4b6e66fec0a59f702e32ec5c476cdd8a800566
inclusion_reason: defer
changed_paths:
- tests/v1/attention/test_attention_backends_selection.py
- tests/v1/attention/test_mamba_selectors.py
- vllm/attention/layer.py
- vllm/model_executor/layers/attention_layer_base.py
- vllm/model_executor/layers/mamba/abstract.py
- vllm/model_executor/layers/mamba/mamba_mixer.py
- vllm/model_executor/layers/mamba/mamba_mixer2.py
- vllm/model_executor/layers/mamba/short_conv.py
- vllm/model_executor/models/minimax_text_01.py
- vllm/v1/attention/backends/mamba_selectors.py
- vllm/v1/worker/gpu_model_runner.py
artifact_dir: evidence/pull-bundles/vllm/gh-23171
head_ref_oid: 9901487a57f83e3b795c7a9be48432e85ac4dc81
---
# [Attention] Unify mamba and attention backend selection

- Repository: `vllm-project/vllm`
- PR: [23171](https://github.com/vllm-project/vllm/pull/23171)
- Decision: `defer`
- Reason: defer

## Changed Paths

- `tests/v1/attention/test_attention_backends_selection.py`
- `tests/v1/attention/test_mamba_selectors.py`
- `vllm/attention/layer.py`
- `vllm/model_executor/layers/attention_layer_base.py`
- `vllm/model_executor/layers/mamba/abstract.py`
- `vllm/model_executor/layers/mamba/mamba_mixer.py`
- `vllm/model_executor/layers/mamba/mamba_mixer2.py`
- `vllm/model_executor/layers/mamba/short_conv.py`
- `vllm/model_executor/models/minimax_text_01.py`
- `vllm/v1/attention/backends/mamba_selectors.py`
- `vllm/v1/worker/gpu_model_runner.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-23171`
