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=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 BAAF9C83000 for ; Wed, 29 Apr 2020 14:15:18 +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 7F29020B80 for ; Wed, 29 Apr 2020 14:15:18 +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="Jjnbt07/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7F29020B80 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]:55338 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jTnUb-0002YH-Jz for qemu-devel@archiver.kernel.org; Wed, 29 Apr 2020 10:15:17 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:45086) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jTnT2-0008RM-1z for qemu-devel@nongnu.org; Wed, 29 Apr 2020 10:13:40 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.90_1) (envelope-from ) id 1jTnT1-00058d-5w for qemu-devel@nongnu.org; Wed, 29 Apr 2020 10:13:39 -0400 Received: from us-smtp-1.mimecast.com ([205.139.110.61]:41162 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jTnT0-00057o-M7 for qemu-devel@nongnu.org; Wed, 29 Apr 2020 10:13:38 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588169617; 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=z5KJj0/IEeIDfSeMUgMfCAULVkkEU1Ysj/D3ASB/G5k=; b=Jjnbt07/xHr9MSmwaGkRW+SU9zwLeg+tWBLDpcyaJ8kdFqzNXqs+sEv7dMEg25VtatmkQP KVHYYUzXoJ3iF5ofIjcdAIOwebO1HzafF3GsApowtIdeKuzToBlhJ2YJteqXue17tRnISt 8uaRc+dwGmPPJEWBnZpxUSI2MkpKONY= 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-300-eJjW36AfMLWIeaVqCQ_XUQ-1; Wed, 29 Apr 2020 10:13:23 -0400 X-MC-Unique: eJjW36AfMLWIeaVqCQ_XUQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id C31EF108BD0F; Wed, 29 Apr 2020 14:13:19 +0000 (UTC) Received: from [10.10.116.80] (ovpn-116-80.rdu2.redhat.com [10.10.116.80]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 998945D9E5; Wed, 29 Apr 2020 14:13:02 +0000 (UTC) Subject: Re: [PATCH v5 0/4] introduction of migration_version attribute for VFIO live migration To: Yan Zhao , "Dr. David Alan Gilbert" References: <20200421023718.GA12111@joy-OptiPlex-7040> <20200422073628.GA12879@joy-OptiPlex-7040> <20200424191049.GU3106@work-vm> <20200426013628.GC12879@joy-OptiPlex-7040> <20200427153743.GK2923@work-vm> <20200428005429.GJ12879@joy-OptiPlex-7040> <20200428141437.GG2794@work-vm> <20200429072616.GL12879@joy-OptiPlex-7040> <20200429082201.GA2834@work-vm> <20200429093555.GM12879@joy-OptiPlex-7040> From: Eric Blake Organization: Red Hat, Inc. Message-ID: <94cd58d2-0580-53cd-6ca2-2c33146e0f2c@redhat.com> Date: Wed, 29 Apr 2020 09:13:01 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <20200429093555.GM12879@joy-OptiPlex-7040> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Received-SPF: pass client-ip=205.139.110.61; envelope-from=eblake@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/04/29 00:53:13 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] 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: "cjia@nvidia.com" , "kvm@vger.kernel.org" , "linux-doc@vger.kernel.org" , "libvir-list@redhat.com" , "Zhengxiao.zx@alibaba-inc.com" , "shuangtai.tst@alibaba-inc.com" , "qemu-devel@nongnu.org" , "kwankhede@nvidia.com" , "eauger@redhat.com" , "Liu, Yi L" , "corbet@lwn.net" , "Yang, Ziye" , "mlevitsk@redhat.com" , "pasic@linux.ibm.com" , "aik@ozlabs.ru" , "felipe@nutanix.com" , "Ken.Xue@amd.com" , "Tian, Kevin" , "eskultet@redhat.com" , "Zeng, Xin" , "zhenyuw@linux.intel.com" , "dinechin@redhat.com" , Alex Williamson , "intel-gvt-dev@lists.freedesktop.org" , "Liu, Changpeng" , "berrange@redhat.com" , Cornelia Huck , "linux-kernel@vger.kernel.org" , "Wang, Zhi A" , "jonathan.davies@nutanix.com" , "He, Shaopeng" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" [meta-comment] On 4/29/20 4:35 AM, Yan Zhao wrote: > On Wed, Apr 29, 2020 at 04:22:01PM +0800, Dr. David Alan Gilbert wrote: [...] >>>>>>>>>>>>>>>>> This patchset introduces a migration_version attribute under sysfs >>>>>>>>>>> of VFIO >>>>>>>>>>>>>>>>> Mediated devices. Hmm, several pages with up to 16 levels of quoting, with editors making the lines ragged, all before I get to the real meat of the email. Remember, it's okay to trim content,... >> So why don't we split the difference; lets say that it should start with >> the hex PCI Vendor ID. >> > The problem is for mdev devices, if the parent devices are not PCI devices, > they don't have PCI vendor IDs. ...to just what you are replying to. -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3226 Virtualization: qemu.org | libvirt.org