From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mta1.migadu.com (out-65.mta1.migadu.com [95.215.58.65]) (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 43D4B47126D for ; Tue, 25 Aug 2026 13:17:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.65 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787663823; cv=none; b=E4U+TEW8f96fn2jRwl6RHL2/oU84ELBf6pOtEkz0AS3k7B5AKtKuFj7foEBts2yRK9LJLw0gbAUns6Cr+gBxQ+2Q3Ud4QoJEiSNGA5IC9IQ/ul8+7Th6M4fy5vJ/pUG4xZ/9FyUdicFCdT64Dc9wEw1csQCWSVMBFqKWFtwFGLo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787663823; c=relaxed/simple; bh=GZQP6l1qj64LVLY5RzENLejQmGGjaOZhrqU0YqVM6yk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=apS4O/8OCNPhRDauIeFF77ioxaJB7uoQIsAFJ520bQVuiIwYJX5OMIN+6bWouqwc4UJpb2sFc2FD8aIv6vIZj+BHqmSieBHNKya3Y3xFaGhVPLC+PccKSF65ypPge7uA/3no262VDMGI9UgSV5Dx+8Eo74ZfiV1Rm0RM0aCU3wo= 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=WQS9mML4; arc=none smtp.client-ip=95.215.58.65 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="WQS9mML4" X-Envelope-To: linux-kernel@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=GZQP6l1qj64LVLY5RzENLejQmGGjaOZhrqU0YqVM6yk=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1787663819; v=1; x=1788268619; b=WQS9mML4MxYQ7UFNQ0ImognRfEHIULzcaqzD6v/8dzXJChyLCFKXsrjFTzbbcUnJmtxHRxQj G0IEVgsHxXDAqKxYnpnyHMtXONJeVMcvfuwsIjCkbTEkg6w08IGH5TdEKf47U6Rm5qritJZt24j dbp6h8lSbU+Z8xvrzWzBqvbs= X-Envelope-To: linux-kernel@vger.kernel.org Received: from [10.254.116.35] (101.126.56.83) by smtp.migadu.com with ESMTPS id c5349879d9be2350; Tue, 25 Aug 2026 13:16:59 +0000 X-Mizu-Trace-ID: c5349879d9be2350 X-Migadu-Flow: FLOW_OUT Message-ID: <0fa919e3-f4c8-49dd-981e-82ae92056d92@linux.dev> Date: Tue, 25 Aug 2026 21:16:45 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 11/17] mm/sparse-vmemmap: remove SPARSEMEM_VMEMMAP_PREINIT support To: Muchun Song , Andrew Morton , Oscar Salvador , David Hildenbrand Cc: Mike Rapoport , Vlastimil Babka , Lorenzo Stoakes , Michal Hocko , David Laight , "Liam R . Howlett" , Suren Baghdasaryan , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Muchun Song References: <20260825084608.47437-1-songmuchun@bytedance.com> <20260825084608.47437-12-songmuchun@bytedance.com> From: Qi Zheng In-Reply-To: <20260825084608.47437-12-songmuchun@bytedance.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 8/25/26 4:46 PM, Muchun Song wrote: > SPARSEMEM_VMEMMAP_PREINIT existed only to support HugeTLB's early > vmemmap optimization setup. > > Now that HugeTLB bootmem vmemmap optimization uses the common > section-based sparse-vmemmap path, the sparse initialization code no > longer needs a separate pre-initialization mechanism for vmemmap > population. > > Remove the related Kconfig symbols, section flag, and empty early hook, > so present sections always go through the normal sparse setup path. > > Signed-off-by: Muchun Song > Acked-by: Mike Rapoport (Microsoft) Acked-by: Qi Zheng Thanks, Qi