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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 0AB4EC32771 for ; Wed, 22 Jan 2020 03:33:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DA95B207E0 for ; Wed, 22 Jan 2020 03:33:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729138AbgAVDd5 (ORCPT ); Tue, 21 Jan 2020 22:33:57 -0500 Received: from foss.arm.com ([217.140.110.172]:50860 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727141AbgAVDd4 (ORCPT ); Tue, 21 Jan 2020 22:33:56 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 2CD1C30E; Tue, 21 Jan 2020 19:33:56 -0800 (PST) Received: from [10.163.1.202] (unknown [10.163.1.202]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 27E263F6C4; Tue, 21 Jan 2020 19:33:42 -0800 (PST) Subject: Re: [PATCH V12 0/2] arm64/mm: Enable memory hot remove To: Will Deacon Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, akpm@linux-foundation.org, catalin.marinas@arm.com, mark.rutland@arm.com, david@redhat.com, cai@lca.pw, logang@deltatee.com, cpandya@codeaurora.org, arunks@codeaurora.org, dan.j.williams@intel.com, mgorman@techsingularity.net, osalvador@suse.de, ard.biesheuvel@arm.com, steve.capper@arm.com, broonie@kernel.org, valentin.schneider@arm.com, Robin.Murphy@arm.com, steven.price@arm.com, suzuki.poulose@arm.com, ira.weiny@intel.com References: <1579157135-10360-1-git-send-email-anshuman.khandual@arm.com> <20200121151822.GA13306@willie-the-truck> From: Anshuman Khandual Message-ID: <3cbdc6f9-093d-975e-f960-68c274aa75a1@arm.com> Date: Wed, 22 Jan 2020 09:05:03 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20200121151822.GA13306@willie-the-truck> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/21/2020 08:48 PM, Will Deacon wrote: > On Thu, Jan 16, 2020 at 12:15:33PM +0530, Anshuman Khandual wrote: >> This series enables memory hot remove functionality on arm64 platform. This >> is based on Linux 5.5-rc6 and particularly deals with a problem caused when >> boot memory is attempted to be removed. Hello Will, > > Unfortunately, this results in a conflict with mainline since the arm64 > -next branches are based on -rc3 and there was a fix merged after that > (feee6b298916 ("mm/memory_hotplug: shrink zones when offlining memory")) > which changes the type of __remove_pages(). Right, that fix went in last couple of weeks. > > So I think I'll leave this for 5.7. Just wondering if there is any chance this can still make it to 5.6 or its already too late ? > > Will > - Anshuman