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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 37406C43215 for ; Tue, 26 Nov 2019 15:41:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0546920727 for ; Tue, 26 Nov 2019 15:41:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574782866; bh=MIaID3hafgAOvobitA36HQ1ZOXFldUAZQPLiYHpVTLU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=IJnmwVQlRIsg4Zw7dZbn1FQ4pHFlMMAYdzJMqfr2cXnCAWtbaw/tIq8/LiGAv52Vk FVDMwxLSnoPL27mhdbJwWluV4hYEKv5SuTtnPc4tbNkwf7gZUg9jWcB+M0VdtLKakK 2xrdOTCu+q8bXDINp7sCQc5myT35OednehZQ3Nzo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728598AbfKZPlF (ORCPT ); Tue, 26 Nov 2019 10:41:05 -0500 Received: from mail-wm1-f65.google.com ([209.85.128.65]:35571 "EHLO mail-wm1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725972AbfKZPlE (ORCPT ); Tue, 26 Nov 2019 10:41:04 -0500 Received: by mail-wm1-f65.google.com with SMTP id n5so3882718wmc.0 for ; Tue, 26 Nov 2019 07:41:03 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=SPgVeVHCC7EK5Hu9F1XSfDX+RpzQC7r0YCpltcwHr9g=; b=ljNyB/6n64JlAi+UuxMqkva7Xg1sVNHLXJv0ynL4Be1nTyRSKo1uBg1hUVk7l8BHdz H8jg7SR/umQGVIMxLJJ0RkimEwDZ3aGsn8W6Nse73ub96ULzaOXe6jo8ehoZolxX3Mqr MSKUAWRrc68GGowWVoNUglBezChrgveo98HisoHYP3kUwETUKI4chS4oujdi4ORQL9ud Gq0X0wodO1cBZg+xuU6Z3RxcyLjkYenzgj63uRu/Newx2GKTt9LuYQYd49Ek34Y3+Ug+ C/ib1RduTodVv6H8HNYf8aoHQAmgOcHI7AXvwDTtPsiSI8Itj19eFtsm5iAyTTNfb9z7 9nqw== X-Gm-Message-State: APjAAAV3zBJIoWfpxiuLFk95SqzjTQPzI3gmE4qyeKsDv+whyDpAXwxg EVopZ+4E6NPTWKPs5T7aOe8= X-Google-Smtp-Source: APXvYqymm/Db5iK7jJmisRl+LZSN5GLqBZG6XZoCXv7DCz6AP98oRtXK7ZfHJK1kNPYg2AEo7Rp2MQ== X-Received: by 2002:a7b:cc86:: with SMTP id p6mr5137900wma.116.1574782862783; Tue, 26 Nov 2019 07:41:02 -0800 (PST) Received: from localhost (prg-ext-pat.suse.com. [213.151.95.130]) by smtp.gmail.com with ESMTPSA id m1sm15128307wrv.37.2019.11.26.07.41.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 Nov 2019 07:41:02 -0800 (PST) Date: Tue, 26 Nov 2019 16:41:01 +0100 From: Michal Hocko To: Qian Cai Cc: Pengfei Li , "lixinhai.lxh@gmail.com" , akpm , mgorman , Vlastimil Babka , cl , "iamjoonsoo.kim" , guro , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" Subject: Re: [RFC v1 00/19] Modify zonelist to nodelist v1 Message-ID: <20191126154101.GJ20912@dhcp22.suse.cz> References: <20191125083948.GC31714@dhcp22.suse.cz> <828BAB69-4B46-418F-A5E2-35B0756340D0@lca.pw> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <828BAB69-4B46-418F-A5E2-35B0756340D0@lca.pw> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue 26-11-19 10:30:56, Qian Cai wrote: > > > > On Nov 25, 2019, at 3:39 AM, Michal Hocko wrote: > > > > People do care about ZONE_MOVABLE and if there is a non-movable memory > > sitting there then it is a bug. Please report that. > > It is trivial to test yourself if you ever care. Just pass kernelcore= > to as many NUMA machines you could find, an then test if ever possible > to offline those memory. I definitely do care if you can provide more details (ideally in a separate email thread). I am using movable memory for memory hotplug usecases and so far I do not remember any kernel/non-movable allocations would make it in - modulo bugs when somebody might use __GFP_MOVABLE when it is not appropriate. -- Michal Hocko SUSE Labs