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,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 07CB1C433E0 for ; Mon, 8 Jun 2020 20:16:02 +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 82ADD206D5 for ; Mon, 8 Jun 2020 20:16:01 +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="aKSCPOqa" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 82ADD206D5 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]:54984 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jiOBc-0002su-H7 for qemu-devel@archiver.kernel.org; Mon, 08 Jun 2020 16:16:00 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:39768) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jiOAP-0002KK-8T for qemu-devel@nongnu.org; Mon, 08 Jun 2020 16:14:45 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:23210 helo=us-smtp-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 1jiOAN-0000T4-WB for qemu-devel@nongnu.org; Mon, 08 Jun 2020 16:14:44 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1591647282; 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=kqw2suCSSvTXM9Y/UeFePJyKeyzEHFfGQJFzCySEgcE=; b=aKSCPOqaTpBCh3hsy4j2Daldg4PQkxP2hWJphfuGQtKVibkUvbeDbd4bN6Ub6RHMxJLfdi 48zKaxFlvnkVYBmx7BC6ylg0a50RXKnpyLpOq1fnrEj/s+/ypvHlmxvY+yDvJ95RC9Jeu8 Bl9J2oMB/ysPkATwGH+AO3xQToZYQ8I= 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-177-ss23EhJ9Phu67_21umELfA-1; Mon, 08 Jun 2020 16:14:34 -0400 X-MC-Unique: ss23EhJ9Phu67_21umELfA-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 493D4835B5C; Mon, 8 Jun 2020 20:14:32 +0000 (UTC) Received: from [10.3.113.22] (ovpn-113-22.phx2.redhat.com [10.3.113.22]) by smtp.corp.redhat.com (Postfix) with ESMTPS id AB3D05D9E4; Mon, 8 Jun 2020 20:14:21 +0000 (UTC) Subject: Re: [RFC v3 7/8] vhost-vdpa: introduce vhost-vdpa backend To: Cindy Lu , mst@redhat.com, armbru@redhat.com, cohuck@redhat.com, jasowang@redhat.com References: <20200529140620.28759-1-lulu@redhat.com> <20200529140620.28759-8-lulu@redhat.com> From: Eric Blake Organization: Red Hat, Inc. Message-ID: <202b7a79-8d27-cdd8-7c72-5016b53c538d@redhat.com> Date: Mon, 8 Jun 2020 15:14:21 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <20200529140620.28759-8-lulu@redhat.com> Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=207.211.31.120; envelope-from=eblake@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/08 05:40:56 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action 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: mhabets@solarflare.com, qemu-devel@nongnu.org, rob.miller@broadcom.com, saugatm@xilinx.com, hanand@xilinx.com, hch@infradead.org, eperezma@redhat.com, jgg@mellanox.com, shahafs@mellanox.com, kevin.tian@intel.com, parav@mellanox.com, vmireyno@marvell.com, cunming.liang@intel.com, gdawar@xilinx.com, jiri@mellanox.com, xiao.w.wang@intel.com, stefanha@redhat.com, zhihong.wang@intel.com, Tiwei Bie , aadam@redhat.com, rdunlap@infradead.org, maxime.coquelin@redhat.com, lingshan.zhu@intel.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 5/29/20 9:06 AM, Cindy Lu wrote: > From: Tiwei Bie The original author is Tiwei Bie... > > Currently we have 2 types of vhost backends in QEMU: vhost kernel and > vhost-user. The above patch provides a generic device for vDPA purpose, > this vDPA device exposes to user space a non-vendor-specific configuration > interface for setting up a vhost HW accelerator, this patch set introduces > a third vhost backend called vhost-vdpa based on the vDPA interface. > > Vhost-vdpa usage: > > qemu-system-x86_64 -cpu host -enable-kvm \ > ...... > -netdev type=vhost-vdpa,vhostdev=/dev/vhost-vdpa-id,id=vhost-vdpa0 \ > -device virtio-net-pci,netdev=vhost-vdpa0,page-per-vq=on \ > > Co-Authored-By: Lingshan zhu > Signed-off-by: Cindy Lu > --- ...but there is no S-o-b here. Also, Co-Authored-By is an unusual tag; it's just as easy to spell it Signed-off-by even for co-authors. [Pardon my delicacy in wording my response; I unfortunately lack enough cultural context to know a preferred name or even gender-correct pronouns for referring to the authors in shorthand] -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3226 Virtualization: qemu.org | libvirt.org