From ca29c2b0e79e4ea1f8257c08927a7b7549ee2480 Mon Sep 17 00:00:00 2001
From: ybyang <10629930+whybeyoung@users.noreply.github.com>
Date: Wed, 20 May 2026 10:57:23 +0800
Subject: [PATCH] fix(dsv4): drop stale pp_size=1 guard for V4 PD
 disaggregation (#25771)

---
 python/sglang/srt/arg_groups/deepseek_v4_hook.py | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/python/sglang/srt/arg_groups/deepseek_v4_hook.py b/python/sglang/srt/arg_groups/deepseek_v4_hook.py
index b3af8e95f..235b3415a 100644
--- a/python/sglang/srt/arg_groups/deepseek_v4_hook.py
+++ b/python/sglang/srt/arg_groups/deepseek_v4_hook.py
@@ -51,13 +51,6 @@ def apply_deepseek_v4_defaults(server_args: "ServerArgs", model_arch: str) -> No
             f"Setting swa_full_tokens_ratio to {server_args.swa_full_tokens_ratio} for {model_arch}."
         )
 
-    if server_args.disaggregation_mode != "null" and server_args.pp_size > 1:
-        # get_mla_kv_ptrs_with_pp cannot slice V4's buffer-type-organized
-        # flat KV ptrs by PP layer range.
-        raise ValueError(
-            f"V4 PD disaggregation requires pp_size=1, got pp_size={server_args.pp_size}."
-        )
-
 
 def validate_deepseek_v4_cp(server_args: "ServerArgs") -> None:
     """Validate DeepSeek V4 context-parallel configuration."""