---
id: pr-sglang-12215
repo: sgl-project/sglang
pr: 12215
title: '[DeepseekV32]: use `_concat_mla_absorb_q_general` to replace `torch.cat`'
author: bingps
date: '2025-11-12'
url: https://github.com/sgl-project/sglang/pull/12215
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: 4eda9969e8b9dee0f0b75d29494c0760a0b41a85
inclusion_reason: kernel file changes
changed_paths:
- python/sglang/srt/layers/attention/nsa_backend.py
head_ref_oid: bce7513d18e654ad2ed116f1c8c2c2da551fa0ba
artifact_dir: evidence/pull-bundles/sglang/gh-12215
---
# [DeepseekV32]: use `_concat_mla_absorb_q_general` to replace `torch.cat`

- Repository: `sgl-project/sglang`
- PR: [12215](https://github.com/sgl-project/sglang/pull/12215)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `python/sglang/srt/layers/attention/nsa_backend.py`

## Evidence Bundle

`evidence/pull-bundles/sglang/gh-12215`
