---
id: pr-vllm-25947
repo: vllm-project/vllm
pr: 25947
title: '[Bugfix] Enable padded FP4 quantization'
author: roikoren755
date: '2025-10-09'
url: https://github.com/vllm-project/vllm/pull/25947
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- quantization
techniques: []
hardware_features:
- fp4
kernel_types:
- quantization
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: 4069db3f2e3fad65251ca5ed659c83ba48894ef2
inclusion_reason: semantic match with file changes
changed_paths:
- vllm/_custom_ops.py
- vllm/utils/flashinfer.py
head_ref_oid: 227f8360dd910016354f52f9c9e62d1cf4008bc2
artifact_dir: evidence/pull-bundles/vllm/gh-25947
---
# [Bugfix] Enable padded FP4 quantization

- Repository: `vllm-project/vllm`
- PR: [25947](https://github.com/vllm-project/vllm/pull/25947)
- Decision: `semantic match with file changes`
- Reason: semantic match with file changes

## Changed Paths

- `vllm/_custom_ops.py`
- `vllm/utils/flashinfer.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-25947`
