---
id: pr-sglang-11138
repo: sgl-project/sglang
pr: 11138
title: Allow use of TRTLLM_MHA backend for hybrid attention on Blackwell
author: DomBrown
date: '2025-10-02'
url: https://github.com/sgl-project/sglang/pull/11138
source_category: upstream-code
architectures:
- sm100
tags: []
techniques: []
hardware_features: []
kernel_types: []
languages: []
captured_at: '2026-05-16'
status: merged
merge_sha: e810077488e190c07e98022f1f16ece9f96d8e8b
inclusion_reason: defer
changed_paths:
- python/sglang/srt/layers/attention/attention_registry.py
- python/sglang/srt/model_executor/model_runner.py
artifact_dir: evidence/pull-bundles/sglang/gh-11138
head_ref_oid: c52a5938009b1c059354eed141eddba239d18592
---
# Allow use of TRTLLM_MHA backend for hybrid attention on Blackwell

- Repository: `sgl-project/sglang`
- PR: [11138](https://github.com/sgl-project/sglang/pull/11138)
- Decision: `defer`
- Reason: defer

## Changed Paths

- `python/sglang/srt/layers/attention/attention_registry.py`
- `python/sglang/srt/model_executor/model_runner.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-11138`
