From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C9D9CC433DB for ; Thu, 21 Jan 2021 18:26:47 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 52AFD23A56 for ; Thu, 21 Jan 2021 18:26:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 52AFD23A56 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id C97476B0006; Thu, 21 Jan 2021 13:26:46 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id C47FB6B0007; Thu, 21 Jan 2021 13:26:46 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B375E6B0008; Thu, 21 Jan 2021 13:26:46 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0027.hostedemail.com [216.40.44.27]) by kanga.kvack.org (Postfix) with ESMTP id 9F3D06B0006 for ; Thu, 21 Jan 2021 13:26:46 -0500 (EST) Received: from smtpin29.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 66F9F8249980 for ; Thu, 21 Jan 2021 18:26:46 +0000 (UTC) X-FDA: 77730613212.29.meat99_221778527565 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin29.hostedemail.com (Postfix) with ESMTP id 4789818075DD5 for ; Thu, 21 Jan 2021 18:26:46 +0000 (UTC) X-HE-Tag: meat99_221778527565 X-Filterd-Recvd-Size: 2377 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf29.hostedemail.com (Postfix) with ESMTP for ; Thu, 21 Jan 2021 18:26:45 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 3098423A40; Thu, 21 Jan 2021 18:26:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1611253604; bh=QysK3//OaVDkByWt5f/lEPJXTvpY0D3NLUd5u1I8rOA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Hu+4lv60UhIAlVXcvc3D4Kg9gtw9J1PRjsUA7Z8LEj0vuIKkPbQDJZd9xQyyTLdPU XCJu6XFFBzLQoCqr6f7oOc4BZWadyCq0XaaCsdxSO+ZYTk6MrdtfKd3CRMcp+Iqxi9 yXkGiTrW0FJO5nbVNSGD8U7aTlAilCpWMqZ+V5BqDDWIrbG352aLGLtnav4yD28Wde vWlTyCrV0RWWQMF4atqRLAWcgms5zD+EP4VFLlr5k5DicoHkx1hzRX4sIksaVtafUm 9Efi+4WAPY/s9IQNx/x5TZYx16M/q6fkHDBxxtrq8Q2QE9JxtE79toavHFkcRvKaFw n1rlXAp9aJhcA== From: Will Deacon To: Catalin Marinas , linux-kernel@vger.kernel.org, Anshuman Khandual , linux-arm-kernel@lists.infradead.org, Sudarshan Rajagopalan , David Hildenbrand , linux-mm@kvack.org Cc: kernel-team@android.com, Will Deacon Subject: Re: [PATCH 0/1] arm64/sparsemem: reduce SECTION_SIZE_BITS Date: Thu, 21 Jan 2021 18:26:39 +0000 Message-Id: <161125239746.2653965.4342337503570976678.b4-ty@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, 20 Jan 2021 21:29:12 -0800, Sudarshan Rajagopalan wrote: > This patch is the follow-up from the discussions in the thread [1]. > Reducing the section size has the merit of reducing wastage of reserved= memory > for vmmemmap mappings for sections with large memory holes. Also with s= maller > section size gives more grunularity and agility for memory hot(un)plugg= ing. >=20 > But there are also constraints in reducing SECTION_SIZE_BIT: >=20 > [...] Applied to arm64 (for-next/misc), thanks! [1/1] arm64/sparsemem: reduce SECTION_SIZE_BITS https://git.kernel.org/arm64/c/f0b13ee23241 Cheers, --=20 Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev