---
id: pr-vllm-27715
repo: vllm-project/vllm
pr: 27715
title: '[AMD] Use Decoupled Kernel Block Size to Support AITER MLA block_size=1'
author: zq1997
date: '2025-11-20'
url: https://github.com/vllm-project/vllm/pull/27715
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- mla
techniques: []
hardware_features: []
kernel_types:
- attention
- mla
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: 3fb0d90999887949629d1e9bac4d98336a35c475
inclusion_reason: kernel file changes
changed_paths:
- vllm/attention/backends/abstract.py
- vllm/v1/attention/backends/mla/rocm_aiter_mla.py
head_ref_oid: 58e04540fff0cbf9b21f5a2a8e104e7dcb7054d6
artifact_dir: evidence/pull-bundles/vllm/gh-27715
---
# [AMD] Use Decoupled Kernel Block Size to Support AITER MLA block_size=1

- Repository: `vllm-project/vllm`
- PR: [27715](https://github.com/vllm-project/vllm/pull/27715)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `vllm/attention/backends/abstract.py`
- `vllm/v1/attention/backends/mla/rocm_aiter_mla.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-27715`
