---
id: pr-vllm-35123
repo: vllm-project/vllm
pr: 35123
title: '[Bugfix] Fix DSV3 kernels breaking _C and _moe_C on unsupported arches'
author: mgoin
date: '2026-02-24'
url: https://github.com/vllm-project/vllm/pull/35123
source_category: upstream-code
architectures:
- sm100
tags:
- gemm
- kernel-fusion
- moe
techniques:
- kernel-fusion
hardware_features: []
kernel_types:
- gemm
- moe
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: 3ef9fd0f989d7dfc5e3633c0dcfc64acbaf2f8c5
inclusion_reason: kernel file changes
changed_paths:
- CMakeLists.txt
- csrc/dsv3_fused_a_gemm.cu
- csrc/moe/dsv3_router_gemm_entry.cu
- csrc/moe/torch_bindings.cpp
- csrc/torch_bindings.cpp
head_ref_oid: 68a40f7987a300530ad1f4e87f244da898b5fd99
artifact_dir: evidence/pull-bundles/vllm/gh-35123
---
# [Bugfix] Fix DSV3 kernels breaking _C and _moe_C on unsupported arches

- Repository: `vllm-project/vllm`
- PR: [35123](https://github.com/vllm-project/vllm/pull/35123)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `CMakeLists.txt`
- `csrc/dsv3_fused_a_gemm.cu`
- `csrc/moe/dsv3_router_gemm_entry.cu`
- `csrc/moe/torch_bindings.cpp`
- `csrc/torch_bindings.cpp`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-35123`
