[Attention][UX] Add AttentionConfig and change attention backend to CLI argument#26315

Open

MatthewBonanni wants to merge 9 commits intovllm-project:mainfrom

MatthewBonanni:add-attention-config

Commits on Oct 6, 2025

Add AttentionConfig and --attention-backend CLI argument
MatthewBonanni
committed
Add documentation for environment variable compatibility
MatthewBonanni
committed
Add deprecation warnings for attention environment variables
MatthewBonanni
committed
Limit deprecation warning to VLLM_ATTENTION_BACKEND only
MatthewBonanni
committed
Replace attention env var references with AttentionConfig
MatthewBonanni
committed
Replace remaining VLLM_ATTENTION_BACKEND env var usages
MatthewBonanni
committed
Create AttentionConfig before ModelConfig to eliminate env var usage
MatthewBonanni
committed
Remove forced_attn_backend global, use AttentionConfig directly
MatthewBonanni
committed
Replace remaining attention env var references with AttentionConfig
MatthewBonanni
committed