---
id: pr-vllm-28133
repo: vllm-project/vllm
pr: 28133
title: '[Mamba] - Consolidate Mambas Attention Logic'
author: Josephasafg
date: '2025-12-23'
url: https://github.com/vllm-project/vllm/pull/28133
source_category: upstream-code
architectures:
- sm100
tags:
- attention
techniques: []
hardware_features: []
kernel_types:
- attention
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: 34916ae37fb91a234413830a58bebca42015833c
inclusion_reason: kernel file changes
changed_paths:
- vllm/model_executor/layers/mamba/short_conv.py
- vllm/v1/attention/backends/mamba1_attn.py
- vllm/v1/attention/backends/mamba2_attn.py
- vllm/v1/attention/backends/mamba_attn.py
- vllm/v1/attention/backends/short_conv_attn.py
head_ref_oid: 7c37f2df1772849e436a2f6aef96d47197c4daaa
artifact_dir: evidence/pull-bundles/vllm/gh-28133
---
# [Mamba] - Consolidate Mambas Attention Logic

- Repository: `vllm-project/vllm`
- PR: [28133](https://github.com/vllm-project/vllm/pull/28133)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `vllm/model_executor/layers/mamba/short_conv.py`
- `vllm/v1/attention/backends/mamba1_attn.py`
- `vllm/v1/attention/backends/mamba2_attn.py`
- `vllm/v1/attention/backends/mamba_attn.py`
- `vllm/v1/attention/backends/short_conv_attn.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-28133`
