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=-3.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 62032C33CB1 for ; Thu, 16 Jan 2020 13:59:36 +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 2472C2075B for ; Thu, 16 Jan 2020 13:59:36 +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="VPTuWI2R" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2472C2075B 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]:42304 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1is5gN-0002u3-6N for qemu-devel@archiver.kernel.org; Thu, 16 Jan 2020 08:59:35 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:46768) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1is5fR-0002DI-VH for qemu-devel@nongnu.org; Thu, 16 Jan 2020 08:58:41 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1is5fO-0003vb-43 for qemu-devel@nongnu.org; Thu, 16 Jan 2020 08:58:37 -0500 Received: from us-smtp-2.mimecast.com ([205.139.110.61]:27483 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1is5fO-0003uN-0M for qemu-devel@nongnu.org; Thu, 16 Jan 2020 08:58:34 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1579183112; 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=PeSOentjljhzRjdi7pvzGbsn7/hJfHM/qOL6BePZdCE=; b=VPTuWI2RvNvBKdOnMdZ4aSUZGtYLrDgD1E5YlncOvanVtEZMRkv3NbjoK+DatLH1AXxz2T 6KM/2Xa8WYUgYULxVekXMI94t3uafVoP+NKpiD5qMVxEuHjAqPJTer3uRPQCCyAg7Y6vTH H9Ef2S3ETK7nb9wFJNzLrrYMakODR+8= 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-318-B_2t5xvJO5KrEgZkVqZZQA-1; Thu, 16 Jan 2020 08:58:31 -0500 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id DF7D918AA2B3; Thu, 16 Jan 2020 13:58:29 +0000 (UTC) Received: from localhost (unknown [10.43.2.114]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2159A8BE08; Thu, 16 Jan 2020 13:58:16 +0000 (UTC) Date: Thu, 16 Jan 2020 14:58:15 +0100 From: Igor Mammedov To: "Daniel P. =?UTF-8?B?QmVycmFuZ8Op?=" Subject: Re: [libvirt] [PATCH v2 82/86] numa: forbid '-numa node, mem' for 5.0 and newer machine types Message-ID: <20200116145815.41ce8915@redhat.com> In-Reply-To: <20200116130628.GG4611@redhat.com> References: <1579100861-73692-1-git-send-email-imammedo@redhat.com> <1579100861-73692-83-git-send-email-imammedo@redhat.com> <20200115153453.GL3243410@angien.pipo.sk> <20200115175237.325055f3@redhat.com> <8b9be103-d550-853a-86ff-1dc504daab64@redhat.com> <20200116133703.11248ead@redhat.com> <20200116130628.GG4611@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-MC-Unique: B_2t5xvJO5KrEgZkVqZZQA-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 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: 205.139.110.61 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: peter.maydell@linaro.org, Peter Krempa , ehabkost@redhat.com, mst@redhat.com, libvir-list@redhat.com, Michal Privoznik , qemu-devel@nongnu.org, qemu-arm@nongnu.org, qemu-ppc@nongnu.org, pbonzini@redhat.com, david@gibson.dropbear.id.au, rth@twiddle.net Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Thu, 16 Jan 2020 13:06:28 +0000 Daniel P. Berrang=C3=A9 wrote: > On Thu, Jan 16, 2020 at 01:37:03PM +0100, Igor Mammedov wrote: > > On Thu, 16 Jan 2020 11:42:09 +0100 > > Michal Privoznik wrote: > > =20 > > > On 1/15/20 5:52 PM, Igor Mammedov wrote: =20 > > > > On Wed, 15 Jan 2020 16:34:53 +0100 > > > > Peter Krempa wrote: > > > > =20 > > > >> On Wed, Jan 15, 2020 at 16:07:37 +0100, Igor Mammedov wrote: =20 > > > >>> Deprecation period is ran out and it's a time to flip the switch > > > >>> introduced by cd5ff8333a. > > > >>> Disable legacy option for new machine types and amend documentati= on. > > > >>> > > > >>> Signed-off-by: Igor Mammedov > > > >>> --- > > > >>> CC: peter.maydell@linaro.org > > > >>> CC: ehabkost@redhat.com > > > >>> CC: marcel.apfelbaum@gmail.com > > > >>> CC: mst@redhat.com > > > >>> CC: pbonzini@redhat.com > > > >>> CC: rth@twiddle.net > > > >>> CC: david@gibson.dropbear.id.au > > > >>> CC: libvir-list@redhat.com > > > >>> CC: qemu-arm@nongnu.org > > > >>> CC: qemu-ppc@nongnu.org > > > >>> --- > > > >>> hw/arm/virt.c | 2 +- > > > >>> hw/core/numa.c | 6 ++++++ > > > >>> hw/i386/pc.c | 1 - > > > >>> hw/i386/pc_piix.c | 1 + > > > >>> hw/i386/pc_q35.c | 1 + > > > >>> hw/ppc/spapr.c | 2 +- > > > >>> qemu-deprecated.texi | 16 ---------------- > > > >>> qemu-options.hx | 8 ++++---- > > > >>> 8 files changed, 14 insertions(+), 23 deletions(-) =20 > > > >> > > > >> I'm afraid nobody bothered to fix it yet: > > > >> > > > >> https://bugzilla.redhat.com/show_bug.cgi?id=3D1783355 =20 > > > >=20 > > > > It's time to start working on it :) > > > > (looks like just deprecating stuff isn't sufficient motivation, > > > > maybe actual switch flipping would work out better) > > > > =20 > > >=20 > > > So how was the upgrade from older to newer version resolved? I mean, = if=20 > > > the old qemu used -numa node,mem=3DXXX and it is migrated to a host w= ith=20 > > > newer qemu, the cmd line can't be switched to -numa node,memdev=3Dnod= e0,=20 > > > can it? I'm asking because I've just started working on this. =20 > >=20 > > see commit cd5ff8333a3c87 for detailed info. > > Short answer is it's not really resolved [*], > > -numa node,mem will keep working on newer QEMU but only for old machine= types > > new machine types will accept only -numa node,memdev. > >=20 > > One can check if "mem=3D' is supported by using QAPI query-machines > > and checking numa-mem-supported field. That field is flipped to false > > for 5.0 and later machine types in this patch. =20 >=20 > Since libvirt droppped the ball here, can we postpone this change > to machine types until a later release.=20 Looks like we have to at this point. We can do this for [82-86/86] patches which are mostly numa related changes. The rest could go in this release as it is in-depended of numa, it mainly introduces memdev backend for main RAM and consolidates twisted main RAM allocation logic. >=20 > Regards, > Daniel