---
id: pr-vllm-21078
repo: vllm-project/vllm
pr: 21078
title: '[Kernel] Flashinfer MLA (trtllm-gen) decode kernel integration'
author: hjjq
date: '2025-09-10'
url: https://github.com/vllm-project/vllm/pull/21078
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- decode
- mla
- pipeline-stages
techniques:
- pipeline-stages
hardware_features: []
kernel_types:
- attention
- decode
- mla
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: dcb28a332bfb7c7b1991ab8c6694233956a4eafe
inclusion_reason: kernel file changes
changed_paths:
- .buildkite/test-pipeline.yaml
- tests/kernels/attention/test_cutlass_mla_decode.py
- tests/kernels/attention/test_flashinfer_mla_decode.py
- vllm/engine/arg_utils.py
- vllm/platforms/cuda.py
- vllm/platforms/interface.py
- vllm/v1/attention/backends/mla/common.py
- vllm/v1/attention/backends/mla/flashinfer_mla.py
head_ref_oid: bcf10503096a31a5c25c9c30b836a3d5119db64d
artifact_dir: evidence/pull-bundles/vllm/gh-21078
---
# [Kernel] Flashinfer MLA (trtllm-gen) decode kernel integration

- Repository: `vllm-project/vllm`
- PR: [21078](https://github.com/vllm-project/vllm/pull/21078)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `.buildkite/test-pipeline.yaml`
- `tests/kernels/attention/test_cutlass_mla_decode.py`
- `tests/kernels/attention/test_flashinfer_mla_decode.py`
- `vllm/engine/arg_utils.py`
- `vllm/platforms/cuda.py`
- `vllm/platforms/interface.py`
- `vllm/v1/attention/backends/mla/common.py`
- `vllm/v1/attention/backends/mla/flashinfer_mla.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-21078`
