---
id: pr-vllm-25049
repo: vllm-project/vllm
pr: 25049
title: '[Attention][DCP] Support DCP with query length > 1 (MTP) with FA3'
author: minosfuture
date: '2025-10-09'
url: https://github.com/vllm-project/vllm/pull/25049
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- decode
- mla
techniques: []
hardware_features: []
kernel_types:
- attention
- decode
- mla
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: 3b736e1c3869a593fed5b2eb58abe0186081d7cd
inclusion_reason: kernel file changes
changed_paths:
- cmake/external_projects/vllm_flash_attn.cmake
- vllm/v1/attention/backends/mla/common.py
- vllm/v1/attention/backends/mla/flashattn_mla.py
- vllm/v1/attention/backends/mla/flashmla.py
- vllm/v1/attention/backends/mla/rocm_aiter_mla.py
- vllm/v1/attention/backends/utils.py
- vllm/v1/spec_decode/eagle.py
- vllm/v1/worker/gpu_model_runner.py
head_ref_oid: 56478b6784b4bc762e5fc980c930bd5e66695dc2
artifact_dir: evidence/pull-bundles/vllm/gh-25049
---
# [Attention][DCP] Support DCP with query length > 1 (MTP) with FA3

- Repository: `vllm-project/vllm`
- PR: [25049](https://github.com/vllm-project/vllm/pull/25049)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `cmake/external_projects/vllm_flash_attn.cmake`
- `vllm/v1/attention/backends/mla/common.py`
- `vllm/v1/attention/backends/mla/flashattn_mla.py`
- `vllm/v1/attention/backends/mla/flashmla.py`
- `vllm/v1/attention/backends/mla/rocm_aiter_mla.py`
- `vllm/v1/attention/backends/utils.py`
- `vllm/v1/spec_decode/eagle.py`
- `vllm/v1/worker/gpu_model_runner.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-25049`
