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=-1.0 required=3.0 tests=MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 91921C43331 for ; Mon, 30 Mar 2020 07:44:30 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 5D7C220733 for ; Mon, 30 Mar 2020 07:44:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5D7C220733 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 01B366B000C; Mon, 30 Mar 2020 03:44:30 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id F331B6B0037; Mon, 30 Mar 2020 03:44:29 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E6FE36B006C; Mon, 30 Mar 2020 03:44:29 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0153.hostedemail.com [216.40.44.153]) by kanga.kvack.org (Postfix) with ESMTP id CF2E96B000C for ; Mon, 30 Mar 2020 03:44:29 -0400 (EDT) Received: from smtpin25.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 89F89249A for ; Mon, 30 Mar 2020 07:44:29 +0000 (UTC) X-FDA: 76651241058.25.flag74_273019cd16a38 X-HE-Tag: flag74_273019cd16a38 X-Filterd-Recvd-Size: 4124 Received: from mail-wm1-f66.google.com (mail-wm1-f66.google.com [209.85.128.66]) by imf46.hostedemail.com (Postfix) with ESMTP for ; Mon, 30 Mar 2020 07:44:29 +0000 (UTC) Received: by mail-wm1-f66.google.com with SMTP id e9so8788322wme.4 for ; Mon, 30 Mar 2020 00:44:29 -0700 (PDT) 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; bh=+lQxT4rOXYS7igvmWe+aSLt8H9b/hooDSaFj9dpIoBo=; b=M0hC2uzJihqQY5GgMz/epqC6qOfqiVZiMMaiGs/vBLUt59gW9NZxWuDkia7F/TZrHA WVBEt0NB+4++Fu99tdtGFwhjb3lyQvj5Pa/Lr9fAmc7GoxFUr45IRsL4vs0MW1o5uzO5 WBy2FWwoAYetapPbGMTvcq/kOr9gwleWXkBT8gI4fOtS3Ivs6UwIxibVwQ/jUBO9u+ni EuAAGl7GgNPwXjmwtpIKIDTlgbRv6KUH+MLUjGvJyQjytTFo8TUXdeUJpkt2g/MJETt0 Q4fzKjMrSmdmvH3ingoJjiO+Ywhsgot/fmPmKXRKJE+XXTFWnuCLnf2hK56ru+gchzs6 HrJg== X-Gm-Message-State: ANhLgQ212SZQsAE8G7Nzml0iqpi7aJqjI0ruiLQewrAg+RagxNf9EzB+ kdOIztdl/Br66ZFnhCSlytc= X-Google-Smtp-Source: ADFU+vv5zPfvR6n12LY62/oTKOim3ahnJoTy88I5ftZ61ckUgrrKlF39ljyabbjxRYuNzhw3oecv9w== X-Received: by 2002:a7b:cc06:: with SMTP id f6mr11831239wmh.65.1585554268222; Mon, 30 Mar 2020 00:44:28 -0700 (PDT) Received: from localhost (ip-37-188-180-223.eurotel.cz. [37.188.180.223]) by smtp.gmail.com with ESMTPSA id p16sm20037964wmi.40.2020.03.30.00.44.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 30 Mar 2020 00:44:27 -0700 (PDT) Date: Mon, 30 Mar 2020 09:44:26 +0200 From: Michal Hocko To: Baoquan He Cc: Hoan Tran , Catalin Marinas , Will Deacon , Andrew Morton , Vlastimil Babka , Oscar Salvador , Pavel Tatashin , Mike Rapoport , Alexander Duyck , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , "David S. Miller" , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , "open list:MEMORY MANAGEMENT" , linux-arm-kernel@lists.infradead.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, x86@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, lho@amperecomputing.com, mmorana@amperecomputing.com Subject: Re: [PATCH v3 0/5] mm: Enable CONFIG_NODES_SPAN_OTHER_NODES by default for NUMA Message-ID: <20200330074426.GB14243@dhcp22.suse.cz> References: <1585420282-25630-1-git-send-email-Hoan@os.amperecomputing.com> <20200329001924.GS3039@MiWiFi-R3L-srv> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200329001924.GS3039@MiWiFi-R3L-srv> 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 Sun 29-03-20 08:19:24, Baoquan He wrote: > On 03/28/20 at 11:31am, Hoan Tran wrote: > > In NUMA layout which nodes have memory ranges that span across other nodes, > > the mm driver can detect the memory node id incorrectly. > > > > For example, with layout below > > Node 0 address: 0000 xxxx 0000 xxxx > > Node 1 address: xxxx 1111 xxxx 1111 > > Sorry, I read this example several times, but still don't get what it > means. Can it be given with real hex number address as an exmaple? I > mean just using the memory layout you have seen from some systems. The > change looks interesting though. Does this make it more clear? physical address range and its node associaion [0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1] -- Michal Hocko SUSE Labs