---
id: pr-vllm-21249
repo: vllm-project/vllm
pr: 21249
title: '[v1] - Mamba1 Attention Metadata'
author: Josephasafg
date: '2025-08-07'
url: https://github.com/vllm-project/vllm/pull/21249
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- moe
techniques: []
hardware_features: []
kernel_types:
- attention
- moe
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 46a13949d5f64e4a40bac3cb30eb0f867074f741
inclusion_reason: kernel file changes
changed_paths:
- csrc/mamba/mamba_ssm/selective_scan.h
- csrc/mamba/mamba_ssm/selective_scan_fwd.cu
- docs/models/supported_models.md
- docs/usage/v1_guide.md
- tests/models/language/generation/test_hybrid.py
- tests/v1/test_oracle.py
- vllm/model_executor/layers/mamba/mamba_mixer.py
- vllm/model_executor/layers/mamba/mamba_mixer2.py
- vllm/model_executor/layers/mamba/mamba_utils.py
- vllm/model_executor/models/bamba.py
- vllm/model_executor/models/falcon_h1.py
- vllm/model_executor/models/granitemoehybrid.py
- vllm/model_executor/models/jamba.py
- vllm/model_executor/models/mamba.py
- vllm/model_executor/models/mamba2.py
- vllm/model_executor/models/nemotron_h.py
- vllm/model_executor/models/zamba2.py
- vllm/v1/attention/backends/mamba1_attn.py
- vllm/v1/attention/backends/mamba_selectors.py
head_ref_oid: 9ab94d41989663d1c3a7f4be9cc8ad5bf57a1663
artifact_dir: evidence/pull-bundles/vllm/gh-21249
---
# [v1] - Mamba1 Attention Metadata

- Repository: `vllm-project/vllm`
- PR: [21249](https://github.com/vllm-project/vllm/pull/21249)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/mamba/mamba_ssm/selective_scan.h`
- `csrc/mamba/mamba_ssm/selective_scan_fwd.cu`
- `docs/models/supported_models.md`
- `docs/usage/v1_guide.md`
- `tests/models/language/generation/test_hybrid.py`
- `tests/v1/test_oracle.py`
- `vllm/model_executor/layers/mamba/mamba_mixer.py`
- `vllm/model_executor/layers/mamba/mamba_mixer2.py`
- `vllm/model_executor/layers/mamba/mamba_utils.py`
- `vllm/model_executor/models/bamba.py`
- `vllm/model_executor/models/falcon_h1.py`
- `vllm/model_executor/models/granitemoehybrid.py`
- `vllm/model_executor/models/jamba.py`
- `vllm/model_executor/models/mamba.py`
- `vllm/model_executor/models/mamba2.py`
- `vllm/model_executor/models/nemotron_h.py`
- `vllm/model_executor/models/zamba2.py`
- `vllm/v1/attention/backends/mamba1_attn.py`
- `vllm/v1/attention/backends/mamba_selectors.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-21249`
