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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id B3098C433EF for ; Wed, 25 May 2022 12:49:16 +0000 (UTC) Received: from localhost ([::1]:38276 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ntqRv-0007mO-BU for qemu-devel@archiver.kernel.org; Wed, 25 May 2022 08:49:15 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:44542) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ntqR5-0006xw-Ij for qemu-devel@nongnu.org; Wed, 25 May 2022 08:48:23 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:22804) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1ntqR2-0001KH-MC for qemu-devel@nongnu.org; Wed, 25 May 2022 08:48:22 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1653482898; 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: in-reply-to:in-reply-to:references:references; bh=Fd/T3WiHN2In1pIUZ0DCj2D/WJ4q1EaXb3OTQ9SVilc=; b=JeaEtcGeWLP4+4obWtNHykfoIoJJrvb5UaPGozv8kQTeB1M1yf3lJstnEqh88k2DQC8BU6 te/Ssk5w4vXy0dVEasLWoQfFjRy4IoI6dcuAiGalSvGsLmEAOfjZFaE55vMBqc5LACts4h Hezg1BBm7KwU0E6lzckwtrnDS5NKFn8= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-253-FolMqfukNHS07qQ9DfMHUg-1; Wed, 25 May 2022 08:48:15 -0400 X-MC-Unique: FolMqfukNHS07qQ9DfMHUg-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id DB35B1C16B40; Wed, 25 May 2022 12:48:14 +0000 (UTC) Received: from localhost (unknown [10.39.195.182]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8D8311410DD5; Wed, 25 May 2022 12:48:14 +0000 (UTC) Date: Wed, 25 May 2022 13:48:13 +0100 From: Stefan Hajnoczi To: Xie Yongji Cc: mst@redhat.com, jasowang@redhat.com, sgarzare@redhat.com, kwolf@redhat.com, mreitz@redhat.com, mlureau@redhat.com, jsnow@redhat.com, eblake@redhat.com, Coiby.Xu@gmail.com, hreitz@redhat.com, qemu-block@nongnu.org, qemu-devel@nongnu.org Subject: Re: [PATCH v6 0/8] Support exporting BDSs via VDUSE Message-ID: References: <20220523084611.91-1-xieyongji@bytedance.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="qoHNYoif3fbDqTRK" Content-Disposition: inline In-Reply-To: <20220523084611.91-1-xieyongji@bytedance.com> X-Scanned-By: MIMEDefang 2.85 on 10.11.54.7 Received-SPF: pass client-ip=170.10.129.124; envelope-from=stefanha@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --qoHNYoif3fbDqTRK Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, May 23, 2022 at 04:46:03PM +0800, Xie Yongji wrote: > Hi all, >=20 > Last few months ago, VDUSE (vDPA Device in Userspace) [1] has > been merged into Linux kernel as a framework that make it > possible to emulate a vDPA device in userspace. This series > aimed at implementing a VDUSE block backend based on the > qemu-storage-daemon infrastructure. >=20 > To support that, we firstly introduce a VDUSE library as a > subproject (like what libvhost-user does) to help implementing > VDUSE backends in QEMU. Then a VDUSE block export is implemented > based on this library. At last, we add resize and reconnect support > to the VDUSE block export and VDUSE library. >=20 > Now this series is based on Stefan's patch [2]. And since we don't > support vdpa-blk in QEMU currently, the VM case is tested with my > previous patchset [3]. >=20 > [1] https://www.kernel.org/doc/html/latest/userspace-api/vduse.html > [2] https://lore.kernel.org/all/20220518130945.2657905-1-stefanha@redhat.= com/ > [3] https://www.mail-archive.com/qemu-devel@nongnu.org/msg797569.html >=20 > Please review, thanks! I talked to Kevin about who should merge this. He will do a final review and it can go through his tree. I will drop it from my 'block' branch for now. Stefan --qoHNYoif3fbDqTRK Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhpWov9P5fNqsNXdanKSrs4Grc8gFAmKOJY0ACgkQnKSrs4Gr c8jDCggArSCsSiG/Bqej19VVjA8Sh+0i7qpDhnBZ9aLXfsJYXpZqxdiK3r1S68b1 ymKVrLDEEyfBK3il+1/ZfKLm6lfeCk4h1oB/OGsx6fyAh0OTxLNc/5bia7vPjWCJ EGjpChP0122VjlZimDBDjcTd+KfqTJDIgqh0eX+8YYcJSitgE72WpaDKXUpUt9UT /aRYPMITYCdP2pFiCl7ncFeq8mhSpD+5h/kBcELJXo0sHI5BecOKFyVw0HTThk9r IExnYV6rdHOQgmuWl3swYxhBY59fHM/Myq1R/3A6L9bGnAa58JTwc8IzyC2fBHcW ETIXjDKuk2c+ta17GTYSq3hjTSytaA== =Xl+L -----END PGP SIGNATURE----- --qoHNYoif3fbDqTRK--