---
id: pr-flashinfer-2547
repo: flashinfer-ai/flashinfer
pr: 2547
title: 'feat: Enable TRTLLM-Gen Skip-Softmax attention for MLA'
author: DomBrown
date: '2026-02-19'
url: https://github.com/flashinfer-ai/flashinfer/pull/2547
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- flash-attention
- mla
- prefill
- tma
techniques: []
hardware_features:
- tma
kernel_types:
- attention
- flash-attention
- mla
- prefill
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 11537c7c8ad9b6c89b021c269c3144bb71897a36
inclusion_reason: kernel file changes
changed_paths:
- csrc/trtllm_fmha_kernel_launcher.cu
- flashinfer/mla.py
- flashinfer/prefill.py
- tests/attention/test_trtllm_gen_attention.py
- tests/attention/test_trtllm_gen_mla.py
head_ref_oid: bb7ea749a3f3636637fc15c7e33d363c2504fe49
artifact_dir: evidence/pull-bundles/flashinfer/gh-2547
---
# feat: Enable TRTLLM-Gen Skip-Softmax attention for MLA

- Repository: `flashinfer-ai/flashinfer`
- PR: [2547](https://github.com/flashinfer-ai/flashinfer/pull/2547)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/trtllm_fmha_kernel_launcher.cu`
- `flashinfer/mla.py`
- `flashinfer/prefill.py`
- `tests/attention/test_trtllm_gen_attention.py`
- `tests/attention/test_trtllm_gen_mla.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-2547`
