From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mta1.migadu.com (out-97.mta1.migadu.com [95.215.58.97]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7693343A7FD for ; Sat, 10 Oct 2026 09:33:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.97 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791624803; cv=none; b=PaR+cMZvUaGpY5T9IkCSIUI0szWT4X23ZC/ce/qYIU3uD2GHNVpTTNOzDEP7+c7GJlIPHdfj5dnq9cAfutW6+PhBqKn8mHDEnHv1YyrT+r7FsgQOpQAp3HsMoeCdNwVGaNUmiN54rPeZJN0Fod01FuimzR15f0yVYFQfp+Fjcg4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791624803; c=relaxed/simple; bh=PJo4tkODSAwLEOEkEK57eCbPFUflApjAg2dMJ+9QYw8=; h=Content-Type:Mime-Version:Subject:From:In-Reply-To:Date:Cc: Message-Id:References:To; b=UrvnNV+2J1XsSHIYzRX7cRD+Aa13vMdFA1cmSv/1/l9RnkDwwrTOQM5hSerW4SsDwYOUGeiAnxzBGh8YBa60DHOjCY1XPGl3CyGeui7da7ySFK7kZ1sFsy8v/B8QAP5U8DCuBrZUZGSUXskUW6SwcCLA4YGYGxTy9vq5JZAkuwQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=OyPnlKQX; arc=none smtp.client-ip=95.215.58.97 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="OyPnlKQX" X-Envelope-To: linux-kernel@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=PJo4tkODSAwLEOEkEK57eCbPFUflApjAg2dMJ+9QYw8=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1791624797; v=1; x=1792229597; b=OyPnlKQXDU0GjsJLx16l/N7aNyV8TV32uB9UZukrSCGkeF5RGj1NCuGGupG39RNppVPtQ5oN koTlLvsrJdtPj2rdeTmh+Tkf1ycbtOZ/cj0LLQ3sQemFmRfdKOU0jgiJ613ClP4P1Y1fShzIAWH IWs1Ig2eykQZ8GcgtKNfDXvc= X-Envelope-To: linux-kernel@vger.kernel.org Received: by smtp.migadu.com with ESMTPS id ae1b224da00926d1; Sat, 10 Oct 2026 09:33:16 +0000 X-Mizu-Trace-ID: ae1b224da00926d1 X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset=us-ascii Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3901.100.1.1.12\)) Subject: Re: [PATCH v4 6/6] mm/mm_init: add zone mismatch warning during page init From: Muchun Song In-Reply-To: <20261010075755.83339-7-songmuchun@bytedance.com> Date: Sat, 10 Oct 2026 17:32:59 +0800 Cc: Madhavan Srinivasan , Mike Rapoport , Andrew Morton , David Hildenbrand , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Ritesh Harjani , Shrikanth Hegde , Lorenzo Stoakes , "Liam R . Howlett" , Vlastimil Babka , Suren Baghdasaryan , Michal Hocko , Qi Zheng , Lance Yang , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Content-Transfer-Encoding: quoted-printable Message-Id: <434B0573-BF18-4413-9BDF-C5873CC13206@linux.dev> References: <20261010075755.83339-1-songmuchun@bytedance.com> <20261010075755.83339-7-songmuchun@bytedance.com> To: Muchun Song X-Mailer: Apple Mail (2.3901.100.1.1.12) > On Oct 10, 2026, at 15:57, Muchun Song = wrote: >=20 > For vmemmap-optimized sections, tail struct pages may be backed by > shared vmemmap pages. Those shared pages must carry the same page zone > ID as the struct pages initialized for the section. >=20 > Warn in __init_single_page() if the shared tail page has a different > page_zone_id(), which would indicate inconsistent initialization. Please ignore Sashiko's report [1], both are false positive. It didn't realize that shared vmemmap pages are initialized early before = __init_single_page(). [1] = https://sashiko.dev/#/patchset/20261010075755.83339-1-songmuchun%40bytedan= ce.com?part=3D6 Thanks.=