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=-5.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 A2C2AC5DF63 for ; Wed, 6 Nov 2019 20:30:44 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6A163217D7 for ; Wed, 6 Nov 2019 20:30:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Ix+fP6vC" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6A163217D7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:34856 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iSRwx-0005SR-HD for qemu-devel@archiver.kernel.org; Wed, 06 Nov 2019 15:30:43 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:46833) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iSRvu-0004uS-LK for qemu-devel@nongnu.org; Wed, 06 Nov 2019 15:29:40 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iSRvs-000597-11 for qemu-devel@nongnu.org; Wed, 06 Nov 2019 15:29:37 -0500 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:38258 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iSRvr-00056Z-Rp for qemu-devel@nongnu.org; Wed, 06 Nov 2019 15:29:35 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1573072174; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=QmM7TkR3DUXrg9IrLjurtmXF2fQShIBFAEVNK6iE6IM=; b=Ix+fP6vCdOkFFYT1s4brk4Pp0Oq4pyJxQtOwVFEp1RckMVaqpB4yd2hNzZ2U4XKuYD5WMO bu/RhHddYKvb0xr7YY2ZRdm2fz3LgJpf2SGyY/bUjg0sDZwDpD3TNEPfCqiWbEny5YnVhW TYZzoqGOpwi7357RKZ2JuR2dtdj3YPc= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-203-Yhd2DsZMPO2l3PjXQNzjAg-1; Wed, 06 Nov 2019 15:29:31 -0500 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D195B800054; Wed, 6 Nov 2019 20:29:29 +0000 (UTC) Received: from [10.3.117.38] (ovpn-117-38.phx2.redhat.com [10.3.117.38]) by smtp.corp.redhat.com (Postfix) with ESMTPS id CDAA45C1BB; Wed, 6 Nov 2019 20:29:25 +0000 (UTC) Subject: Re: [PATCH v14 04/11] numa: Extend CLI to provide initiator information for numa nodes To: Tao Xu , mst@redhat.com, imammedo@redhat.com, ehabkost@redhat.com, marcel.apfelbaum@gmail.com, armbru@redhat.com, mdroth@linux.vnet.ibm.com, thuth@redhat.com, lvivier@redhat.com References: <20191028075220.25673-1-tao3.xu@intel.com> <20191028075220.25673-5-tao3.xu@intel.com> From: Eric Blake Organization: Red Hat, Inc. Message-ID: <3c0b4ebc-3d0e-87b0-b290-cab4f833cfcf@redhat.com> Date: Wed, 6 Nov 2019 14:29:25 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.1 MIME-Version: 1.0 In-Reply-To: <20191028075220.25673-5-tao3.xu@intel.com> Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-MC-Unique: Yhd2DsZMPO2l3PjXQNzjAg-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jingqi.liu@intel.com, Dan Williams , fan.du@intel.com, qemu-devel@nongnu.org, jonathan.cameron@huawei.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 10/28/19 2:52 AM, Tao Xu wrote: > In ACPI 6.3 chapter 5.2.27 Heterogeneous Memory Attribute Table (HMAT), > The initiator represents processor which access to memory. And in 5.2.27.= 3 > Memory Proximity Domain Attributes Structure, the attached initiator is > defined as where the memory controller responsible for a memory proximity > domain. With attached initiator information, the topology of heterogeneou= s > memory can be described. >=20 > Extend CLI of "-numa node" option to indicate the initiator numa node-id. > In the linux kernel, the codes in drivers/acpi/hmat/hmat.c parse and repo= rt > the platform's HMAT tables. >=20 > Reviewed-by: Igor Mammedov > Reviewed-by: Jingqi Liu > Suggested-by: Dan Williams > Signed-off-by: Tao Xu > --- >=20 > +++ b/qapi/machine.json > @@ -463,6 +463,13 @@ > # @memdev: memory backend object. If specified for one node, > # it must be specified for all nodes. > # > +# @initiator: defined in ACPI 6.3 Chapter 5.2.27.3 Table 5-145, > +# points to the nodeid which has the memory controller > +# responsible for this NUMA node. This field provides > +# additional information as to the initiator node that > +# is closest (as in directly attached) to this node, and > +# therefore has the best performance (since 4.2) > +# I'm sad to say, but we've now missed soft freeze for 4.2. This feels=20 like enough of a feature that we'll probably have to defer the series to=20 the 5.0 release, which will have ripple effects to your patches. --=20 Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3226 Virtualization: qemu.org | libvirt.org