---
id: pr-vllm-36847
repo: vllm-project/vllm
pr: 36847
title: '[Feat][Spec Decode] DFlash'
author: benchislett
date: '2026-03-30'
url: https://github.com/vllm-project/vllm/pull/36847
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- decode
techniques: []
hardware_features: []
kernel_types:
- attention
- decode
languages:
- python
captured_at: '2026-04-17'
status: merged
merge_sha: 494636b29d3b3a7b35020e4becb6c6995e200f9d
inclusion_reason: kernel file changes
changed_paths:
- tests/models/registry.py
- tests/v1/e2e/spec_decode/test_spec_decode.py
- tests/v1/spec_decode/test_eagle.py
- vllm/config/speculative.py
- vllm/config/vllm.py
- vllm/model_executor/models/qwen3.py
- vllm/model_executor/models/qwen3_dflash.py
- vllm/model_executor/models/qwen3_next.py
- vllm/model_executor/models/registry.py
- vllm/transformers_utils/configs/eagle.py
- vllm/v1/attention/backend.py
- vllm/v1/attention/backends/flash_attn.py
- vllm/v1/attention/selector.py
- vllm/v1/spec_decode/dflash.py
- vllm/v1/spec_decode/eagle.py
- vllm/v1/spec_decode/utils.py
- vllm/v1/worker/gpu_model_runner.py
head_ref_oid: df427a4822e9a51ed774e170bfa2537711ca16e4
artifact_dir: evidence/pull-bundles/vllm/gh-36847
---
# [Feat][Spec Decode] DFlash

- Repository: `vllm-project/vllm`
- PR: [36847](https://github.com/vllm-project/vllm/pull/36847)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `tests/models/registry.py`
- `tests/v1/e2e/spec_decode/test_spec_decode.py`
- `tests/v1/spec_decode/test_eagle.py`
- `vllm/config/speculative.py`
- `vllm/config/vllm.py`
- `vllm/model_executor/models/qwen3.py`
- `vllm/model_executor/models/qwen3_dflash.py`
- `vllm/model_executor/models/qwen3_next.py`
- `vllm/model_executor/models/registry.py`
- `vllm/transformers_utils/configs/eagle.py`
- `vllm/v1/attention/backend.py`
- `vllm/v1/attention/backends/flash_attn.py`
- `vllm/v1/attention/selector.py`
- `vllm/v1/spec_decode/dflash.py`
- `vllm/v1/spec_decode/eagle.py`
- `vllm/v1/spec_decode/utils.py`
- `vllm/v1/worker/gpu_model_runner.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-36847`
