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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_MUTT 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 F1148C04AB4 for ; Tue, 21 May 2019 16:11:10 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B33272173C for ; Tue, 21 May 2019 16:11:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B33272173C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 5B44A6B0006; Tue, 21 May 2019 12:11:10 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 5667D6B0007; Tue, 21 May 2019 12:11:10 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 4A27F6B0008; Tue, 21 May 2019 12:11:10 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from mail-ed1-f72.google.com (mail-ed1-f72.google.com [209.85.208.72]) by kanga.kvack.org (Postfix) with ESMTP id 1778F6B0006 for ; Tue, 21 May 2019 12:11:10 -0400 (EDT) Received: by mail-ed1-f72.google.com with SMTP id e21so31373183edr.18 for ; Tue, 21 May 2019 09:11:10 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-original-authentication-results:x-gm-message-state:date:from:to :cc:subject:message-id:references:mime-version:content-disposition :in-reply-to:user-agent; bh=5/i/kr8EFjFeA/wEh2rz1tJq6M0y92KA3xDD1zmtX7k=; b=Bj3GMAY9MuvjUB/XI5FEGz3BFlsNMEWY8kwy7xGOvQn7dwBJMHct3bJNS3+YUyfUJw vhVqW26pqv1GHc/aQcCIgkLeBt44GZVPSTui9UyQahgYFbf82eTwHXn3s2X4VMqJy+cr mbC0mnin532kRH/Db0rIxqDu1KF1Q7A8BO+2mE0LaModgqVNDRsbsSrGLd8e58lzOBaf vQ8t+1K6qjw1c90WUMHuitcyrJAgnk+RiBIYN7wCWNlInyS1I+khQ1JQsL4kss825Mgw 4yNhYBnBuRHM6rRnVnUPQU88hFK+2jpZgVNMB9ieCeqrkMnX9zgPxKELlpefmk9QearZ SgeQ== X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of osalvador@suse.de designates 195.135.220.15 as permitted sender) smtp.mailfrom=osalvador@suse.de X-Gm-Message-State: APjAAAUsF8G4JYNJiC6JZSgwa5PnTJO9kZgqfLwpJZ110gb7a7rWfvVS kCXb+L/Wqlt8zk8cdlymBKIYOE0QcAqMiAaG005ZKt/+TMUe47O0v1AM+8lIo0EvgdLdUVv6AzJ J8EVd0Mn3pAb6gd0xen8r8Nq3nn/KOGbCAPExPBq6tAsmHb6rQevuyiALaEkmnroM0w== X-Received: by 2002:a50:9435:: with SMTP id p50mr84579191eda.40.1558455069622; Tue, 21 May 2019 09:11:09 -0700 (PDT) X-Google-Smtp-Source: APXvYqzTCUwxTuOOgfNschr+iH8aYaMKhpxHW2By5eFLR1Vk3mx3SWibddxqIh6EopTzSw6Q93RN X-Received: by 2002:a50:9435:: with SMTP id p50mr84579089eda.40.1558455068807; Tue, 21 May 2019 09:11:08 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1558455068; cv=none; d=google.com; s=arc-20160816; b=hAcEtGnSqmXlLvaCtisvyttD9Z3NNZ4xOKuRedfHK5VWKskrjAhtdzO5t9Z1ekUBzK w3nMsKFhP9naok1C084Qq1t34Z6MuTcoy7fO/PUdwrbO5L+GLmCPebLOwCLtLyti49dG VN3ZRm4Re/6yxhRZ0IEvFpOfoxPMnK8Znkzslnl6re7ppOpG0K0JboAtzB8timTN3l7+ ngsybP9bC2tFCGc3Rn7qqhjyrD2/zen2emOcCcP8OQTHgk38a3qNA2EkFXB+tUPgDYNX ci9lW4IeqFYIowcP82QPvjarxJOXmjgisfjzSncVgKI2Z3+zMdWuk+IWQxk310CM8Hn5 Fsvw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=user-agent:in-reply-to:content-disposition:mime-version:references :message-id:subject:cc:to:from:date; bh=5/i/kr8EFjFeA/wEh2rz1tJq6M0y92KA3xDD1zmtX7k=; b=nq0BuESVsaU14YhSynmEw11C1EqWuhC/6ItsDBZs9V4h45BtixUIqIt19K0nX9Z90j KKub56aygo4MuKdf9EB9wS0AIGBUSDEfCijjPbt61P8DfnN0y7Fcqc1D7mSHq1OotweE EtRrB4kcqjCYuzsL8eTWEnBiBkI9/BnaJt0/1lQZBc+AYpyEu1IWxa3OF+FTcNw0PJ6c OFwThrTW0iYBbOgr3hPykbMbVwemQUqCK740zWXKrm6ZvLxkoKi/pTr1OE8SwdNDUXof ea5bso9l2zxo93YD6R/QrXIKaKr7uhcQOL8w3Qq5IlqFmFDCBwY14U3DW/RZm+rDvlf7 cx3A== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of osalvador@suse.de designates 195.135.220.15 as permitted sender) smtp.mailfrom=osalvador@suse.de Received: from mx1.suse.de (mx2.suse.de. [195.135.220.15]) by mx.google.com with ESMTPS id b51si1206706edc.153.2019.05.21.09.11.08 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 21 May 2019 09:11:08 -0700 (PDT) Received-SPF: pass (google.com: domain of osalvador@suse.de designates 195.135.220.15 as permitted sender) client-ip=195.135.220.15; Authentication-Results: mx.google.com; spf=pass (google.com: domain of osalvador@suse.de designates 195.135.220.15 as permitted sender) smtp.mailfrom=osalvador@suse.de X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id D22D7ADE1; Tue, 21 May 2019 16:11:07 +0000 (UTC) Date: Tue, 21 May 2019 18:11:05 +0200 From: Oscar Salvador To: David Hildenbrand Cc: Mike Rapoport , Jonathan Corbet , linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] docs: reorder memory-hotplug documentation Message-ID: <20190521161101.GA2372@linux> References: <1557822213-19058-1-git-send-email-rppt@linux.ibm.com> <43092504-a95f-374d-f3db-b961dd8ac428@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <43092504-a95f-374d-f3db-b961dd8ac428@redhat.com> User-Agent: Mutt/1.10.1 (2018-07-13) 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 Tue, May 21, 2019 at 12:41:50PM +0200, David Hildenbrand wrote: > > +Future Work > > +=========== > > + > > + - allowing memory hot-add to ZONE_MOVABLE. maybe we need some switch like > > + sysctl or new control file. > > ... that already works if I am not completely missing the point here It does. > > + - support HugeTLB page migration and offlining. > > ... I remember that Oscar was doing something in that area, Oscar? Yes, in general offlinining on hugetlb pages was already working, but we did not allow to offline 1GB-hugetlb pages on x86_64. I removed that limitation with ("commit: 10eeadf3045c mm,memory_hotplug: unlock 1GB-hugetlb on x86_64") , so now offlining on hugetlb pages should be fully operative. > I'd vote for removing the future work part, this is pretty outdated. Instead of removing it, I would rather make it consistent with the present. E.g: - Move page handling from memory-hotremove to offline stage - Enable a way to allocate vmemmap pages from hot-added memory etc. -- Oscar Salvador SUSE L3