---
id: pr-flashinfer-3058
repo: flashinfer-ai/flashinfer
pr: 3058
title: Support lse in trtllm paged attn kernels
author: murphymatt
date: '2026-04-15'
url: https://github.com/flashinfer-ai/flashinfer/pull/3058
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- decode
- flash-attention
- mla
- prefill
techniques: []
hardware_features: []
kernel_types:
- attention
- decode
- flash-attention
- mla
- prefill
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 25b324dbad53942a695a1f00cd7837800de25634
inclusion_reason: kernel file changes
changed_paths:
- csrc/trtllm_fmha_kernel_launcher.cu
- flashinfer/decode.py
- flashinfer/mla/_core.py
- flashinfer/prefill.py
- include/flashinfer/trtllm/fmha/fmhaRunnerParams.h
- tests/attention/test_trtllm_gen_attention.py
- tests/attention/test_trtllm_gen_mla.py
head_ref_oid: a8528be2d698a597ee61d66ef466542ae8a726f6
artifact_dir: evidence/pull-bundles/flashinfer/gh-3058
---
# Support lse in trtllm paged attn kernels

- Repository: `flashinfer-ai/flashinfer`
- PR: [3058](https://github.com/flashinfer-ai/flashinfer/pull/3058)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/trtllm_fmha_kernel_launcher.cu`
- `flashinfer/decode.py`
- `flashinfer/mla/_core.py`
- `flashinfer/prefill.py`
- `include/flashinfer/trtllm/fmha/fmhaRunnerParams.h`
- `tests/attention/test_trtllm_gen_attention.py`
- `tests/attention/test_trtllm_gen_mla.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-3058`
