---
id: pr-sglang-17111
repo: sgl-project/sglang
pr: 17111
title: '[diffusion] fix: fix using upstream flash_attn on blackwell'
author: mickqian
date: '2026-01-15'
url: https://github.com/sgl-project/sglang/pull/17111
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- kernel-fusion
techniques:
- kernel-fusion
hardware_features: []
kernel_types:
- attention
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: 16831ab6d707070f42275d596ce2b3b2f4d69072
inclusion_reason: kernel file changes
changed_paths:
- python/sglang/multimodal_gen/runtime/layers/attention/backends/flash_attn.py
- python/sglang/multimodal_gen/runtime/loader/component_loader.py
- python/sglang/multimodal_gen/runtime/platforms/interface.py
head_ref_oid: aabf30c3e8844eef87acc32f48b650580b253e7f
artifact_dir: evidence/pull-bundles/sglang/gh-17111
---
# [diffusion] fix: fix using upstream flash_attn on blackwell

- Repository: `sgl-project/sglang`
- PR: [17111](https://github.com/sgl-project/sglang/pull/17111)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `python/sglang/multimodal_gen/runtime/layers/attention/backends/flash_attn.py`
- `python/sglang/multimodal_gen/runtime/loader/component_loader.py`
- `python/sglang/multimodal_gen/runtime/platforms/interface.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-17111`
