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=-14.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 F2FB6C433E9 for ; Thu, 21 Jan 2021 18:39:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B11EA20663 for ; Thu, 21 Jan 2021 18:39:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726515AbhAUSjK (ORCPT ); Thu, 21 Jan 2021 13:39:10 -0500 Received: from mail.kernel.org ([198.145.29.99]:60952 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726294AbhAUS1Z (ORCPT ); Thu, 21 Jan 2021 13:27:25 -0500 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: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 smaller > section size gives more grunularity and agility for memory hot(un)plugging. > > But there are also constraints in reducing SECTION_SIZE_BIT: > > [...] Applied to arm64 (for-next/misc), thanks! [1/1] arm64/sparsemem: reduce SECTION_SIZE_BITS https://git.kernel.org/arm64/c/f0b13ee23241 Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev 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=-12.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 4F9B6C433DB for ; Thu, 21 Jan 2021 18:28:18 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0742723A54 for ; Thu, 21 Jan 2021 18:28:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0742723A54 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=iEBMmsQfAMDGRcK0yP2w7DQ0rkziUaqbcmfIqR0PIQY=; b=TyStOkAAF0ImHu9HNuTjULbXt KSzVwvh+96rWRYz9GZMnCJ9AUTKmXiB7TDFRdVdjiiXog9CYfOvjlrApUOANgObR6+9jPd5uRExrk QnIjHYA8WI3h88WSzXHKIXOB50C5DVagAfC/51jHXv6+UiDJObQ32aOippQZz/2NoTYmSNs3ACFYK 2YEPxxBiSPPH0xRAnFrnLk6zEx1qetd1eSjUtFk5360+MB4OS4fJT7Zvud8Mn1E6vhpueCVC3M61B PFN3P1DLij9/lsh+l8VNEPikn+62WnDqZjnTECrhVcRVv8BlPs5DMuZm2eSrVIWzHlKRQrIUGl/Qd PGnU2HZEA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l2efQ-0002LG-PT; Thu, 21 Jan 2021 18:26:48 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1l2efO-0002KH-Ft for linux-arm-kernel@lists.infradead.org; Thu, 21 Jan 2021 18:26:47 +0000 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 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210121_132646_610737_DFEC59D0 X-CRM114-Status: GOOD ( 10.11 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Will Deacon , kernel-team@android.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 smaller > section size gives more grunularity and agility for memory hot(un)plugging. > > But there are also constraints in reducing SECTION_SIZE_BIT: > > [...] Applied to arm64 (for-next/misc), thanks! [1/1] arm64/sparsemem: reduce SECTION_SIZE_BITS https://git.kernel.org/arm64/c/f0b13ee23241 Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel