Received: by 2002:ad5:474a:0:0:0:0:0 with SMTP id i10csp7496915imu;
        Thu, 27 Dec 2018 22:38:32 -0800 (PST)
X-Google-Smtp-Source: ALg8bN6G5uicn36Fc3/uvJ2TP4tBagknc/f4F2kutuG6En6Hdr+daNmrswrD6jn02Gc46qulQ/DB
X-Received: by 2002:a63:f141:: with SMTP id o1mr25616448pgk.134.1545979112605;
        Thu, 27 Dec 2018 22:38:32 -0800 (PST)
ARC-Seal: i=1; a=rsa-sha256; t=1545979112; cv=none;
        d=google.com; s=arc-20160816;
        b=DqMp/LaS4isUFyZCMUGcP+ENhuL4FX0GVq+tpg+ksAh/PIUX+V6g2nwKRAiHGH+I8c
         HoW4C057vY3PLpnrJKeyDYB4I+JqoBWGAIVv0r/ZX7BePjuO83eL50mDl8KXwDZ5bmqu
         ZM7pF5agHBy3gda9LDpAZoEhvTis3+kZSHXGYFO71cczUDafP9y6Y36ICGnG2CGu3hob
         Y5p6ZSWVoXk4xXV6oAn6Z0iYhrumf8OACUB4uCOjnQySQXG57HJrdWWBq6i8viODkImD
         M53+Zu83cPphdmoa19oYMLiJ44tJx5dXMqNwiUYZL79Oh5iVNHr5Zz7YYj0X/L1hJj5E
         diSA==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
        h=list-id:precedence:sender:feedback-id:mime-version:user-agent
         :references:message-id:in-reply-to:subject:cc:to:from:date
         :dkim-signature;
        bh=QTawriguloQdF7CFQCrxqBobe3Vbqu3Bc8KBa60ZtJY=;
        b=Lzfb0weCcce17u/80M3YwyYCOb7oqkF3BPkJi7w/vfKkHau3MhoC6YLb41yGG1g79J
         Gx+HuY5bDRJWngb6LPNii/U0n4F8icHzj7YdKz2GIELiIJGY7Um7uQCY/dMf2xe75/qy
         zziKaVr2QLwDzQHZQaSc0sv/HdoGQ938Np0X/2nzi/i9RPYodQUbT5motzadLAvxSPjr
         MsM0UQ/ErLL54wvilU4MAOhbUF1RuzDQkGb4W9hBi7LLSSLwWNvpIDPwcxN5sLkl7PDB
         8pWVBvjlI3AnGl+xCspiR02gP9E1HYkLhgS//kUPiRH+DcU4a79Wj+CT+/Cf7RY4B3Kl
         VRLg==
ARC-Authentication-Results: i=1; mx.google.com;
       dkim=pass header.i=@amazonses.com header.s=ug7nbtf4gccmlpwj322ax3p6ow6yfsug header.b=TOF2ro9U;
       spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67])
        by mx.google.com with ESMTP id m1si38939710pfi.286.2018.12.27.22.38.17;
        Thu, 27 Dec 2018 22:38:32 -0800 (PST)
Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Authentication-Results: mx.google.com;
       dkim=pass header.i=@amazonses.com header.s=ug7nbtf4gccmlpwj322ax3p6ow6yfsug header.b=TOF2ro9U;
       spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1729475AbeL0UH2 (ORCPT <rfc822;vladislav.valtchev@gmail.com>
        + 99 others); Thu, 27 Dec 2018 15:07:28 -0500
Received: from a9-35.smtp-out.amazonses.com ([54.240.9.35]:52068 "EHLO
        a9-35.smtp-out.amazonses.com" rhost-flags-OK-OK-OK-OK)
        by vger.kernel.org with ESMTP id S1728837AbeL0UH1 (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Thu, 27 Dec 2018 15:07:27 -0500
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/simple;
        s=ug7nbtf4gccmlpwj322ax3p6ow6yfsug; d=amazonses.com; t=1545941246;
        h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:MIME-Version:Content-Type:Feedback-ID;
        bh=QTawriguloQdF7CFQCrxqBobe3Vbqu3Bc8KBa60ZtJY=;
        b=TOF2ro9UED8NSFyGorBRsg+X2DDadwH1nM2B9UdS6Bhj2/qGg+zM4pDa67jHnv16
        sqcbXF8yAOKi4/erGhfr/4AEEK/+b+zmwBDhpxj2i0ndnFLIfX/72SM2mYZ+rKoV21n
        MOE+VlpbpmatqS5fDdmrTqc2jcBtjLUH3HMFK8Rk=
Date:   Thu, 27 Dec 2018 20:07:26 +0000
From:   Christopher Lameter <cl@linux.com>
X-X-Sender: cl@nuc-kabylake
To:     Fengguang Wu <fengguang.wu@intel.com>
cc:     Andrew Morton <akpm@linux-foundation.org>,
        Linux Memory Management List <linux-mm@kvack.org>,
        Fan Du <fan.du@intel.com>, kvm@vger.kernel.org,
        LKML <linux-kernel@vger.kernel.org>,
        Yao Yuan <yuan.yao@intel.com>,
        Peng Dong <dongx.peng@intel.com>,
        Huang Ying <ying.huang@intel.com>,
        Liu Jingqi <jingqi.liu@intel.com>,
        Dong Eddie <eddie.dong@intel.com>,
        Dave Hansen <dave.hansen@intel.com>,
        Zhang Yi <yi.z.zhang@linux.intel.com>,
        Dan Williams <dan.j.williams@intel.com>
Subject: Re: [RFC][PATCH v2 08/21] mm: introduce and export pgdat peer_node
In-Reply-To: <20181226133351.521151384@intel.com>
Message-ID: <01000167f14761d6-b1564081-0d5f-4752-86be-2e99c8375866-000000@email.amazonses.com>
References: <20181226131446.330864849@intel.com> <20181226133351.521151384@intel.com>
User-Agent: Alpine 2.21 (DEB 202 2017-01-01)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
X-SES-Outgoing: 2018.12.27-54.240.9.35
Feedback-ID: 1.us-east-1.fQZZZ0Xtj2+TD7V5apTT/NrT6QKuPgzCT/IC7XYgDKI=:AmazonSES
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Wed, 26 Dec 2018, Fengguang Wu wrote:

> Each CPU socket can have 1 DRAM and 1 PMEM node, we call them "peer nodes".
> Migration between DRAM and PMEM will by default happen between peer nodes.

Which one does numa_node_id() point to? I guess that is the DRAM node and
then we fall back to the PMEM node?