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=-10.3 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 6CFF6C433E6 for ; Wed, 6 Jan 2021 02:21:22 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 87026229EF for ; Wed, 6 Jan 2021 02:21:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 87026229EF Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id BB3028D00D7; Tue, 5 Jan 2021 21:21:20 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id B3BD88D00D1; Tue, 5 Jan 2021 21:21:20 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9DCF08D00D7; Tue, 5 Jan 2021 21:21:20 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0238.hostedemail.com [216.40.44.238]) by kanga.kvack.org (Postfix) with ESMTP id 7F9DD8D00D1 for ; Tue, 5 Jan 2021 21:21:20 -0500 (EST) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 499E51EFD for ; Wed, 6 Jan 2021 02:21:20 +0000 (UTC) X-FDA: 77673748320.01.wheel49_0d053d8274dd Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin01.hostedemail.com (Postfix) with ESMTP id 2ED831004C7A6 for ; Wed, 6 Jan 2021 02:21:20 +0000 (UTC) X-HE-Tag: wheel49_0d053d8274dd X-Filterd-Recvd-Size: 2696 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf39.hostedemail.com (Postfix) with ESMTP for ; Wed, 6 Jan 2021 02:21:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:Content-Type: In-Reply-To:MIME-Version:Date:Message-ID:From:References:To:Subject:Sender: Reply-To:Cc:Content-ID:Content-Description; bh=DwXo5OtthLO/ovJHBO2OaqlsvlKPhfS9FzWXNA2R03w=; b=NJ8lsE016yMA0O3c6CI+fNdOHV 16fKw+Q3tCvv1IzaRiOJL5IQZ7UmYqB8ehMKyXJXOvuykJ9xrrR1KhRxTJyVmE9zB0yCxScRdGIlI xyJ+HxIzO10aSJ0hy3J4l/0hOAgO+gBzx5+GaNrRgH5hNM69MtGgaIlAF63nPVaXXavOTP/DWXeoC 0TvHOh+3Jn8TZzYj3gDjnl40fLIYXN+j5Fuw91r5XE15GrJvizpOYGq61odHCwa+E5iSsi65EH4nP gFSaX33WskvgxxXLEFxBuPzn4T+VZs+80Y5WsPrl+kg12+xOlSX1S5KQnYK1rcG1i305TqM/r1rUg dTemnIJQ==; Received: from [2601:1c0:6280:3f0::64ea] by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1kwyRI-001uc0-QK; Wed, 06 Jan 2021 02:21:03 +0000 Subject: Re: [PATCH 1/1] arm64: make section size configurable for memory hotplug To: Sudarshan Rajagopalan , akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <66f79b0c06602c22df4da8ff4a5c2b97c9275250.1609895500.git.sudaraja@codeaurora.org> From: Randy Dunlap Message-ID: <1c4613bc-56e9-de99-e9de-4313b4aa88a2@infradead.org> Date: Tue, 5 Jan 2021 18:20:40 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.0 MIME-Version: 1.0 In-Reply-To: <66f79b0c06602c22df4da8ff4a5c2b97c9275250.1609895500.git.sudaraja@codeaurora.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit 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 1/5/21 5:28 PM, Sudarshan Rajagopalan wrote: > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index 6d232837cbee..34124eee65da 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -294,6 +294,17 @@ config ARCH_ENABLE_MEMORY_HOTREMOVE > config SMP > def_bool y > > +config HOTPLUG_SIZE_BITS > + int "Memory hotplug block size(29 => 512MB 30 => 1GB)" block size (29 => 512MB, 30 => 1GB)" > + depends on SPARSEMEM > + depends on MEMORY_HOTPLUG > + range 28 30 > + default 30 > + help > + Selects granularity of hotplug memory. Block size for > + memory hotplug is represent as a power of 2. represented > + If unsure, stick with default value. and all of the help text should be indented with 1 tab + 2 spaces. thanks. -- ~Randy