From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 38787A0508 for ; Tue, 29 Mar 2022 14:47:08 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 2C00840141; Tue, 29 Mar 2022 14:47:08 +0200 (CEST) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by mails.dpdk.org (Postfix) with ESMTP id 9804940141 for ; Tue, 29 Mar 2022 14:47:06 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1648558026; 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=uyE6QfDVkTPyQV+qTxtEuHvRtTXdArQTvNeu6/3vxHw=; b=e3dx07MWepgqYIAdXh1CjBxiThuSeY6Iu8eJsmTnHhzGo6z+vkKgYc6s/3oKAUBFeL5fJc fa6Z2pUdd3FpuFGLM7dEkjX37f8u3qwgzXHU2aFcJwGDaaKNh18c2hbg13aVzpA99JbFVo T89syhkZpVQ0Z4ZCvsKLHdk3VymXYKA= 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-127-Ak63AW4GMEG64vCUOIQegg-1; Tue, 29 Mar 2022 08:47:03 -0400 X-MC-Unique: Ak63AW4GMEG64vCUOIQegg-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 6F11D1C00B8B; Tue, 29 Mar 2022 12:47:01 +0000 (UTC) Received: from [10.39.208.2] (unknown [10.39.208.2]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 8AE4B1121314; Tue, 29 Mar 2022 12:46:57 +0000 (UTC) Message-ID: <475b6a00-ec0a-12a9-d8e6-ac1c1eb68675@redhat.com> Date: Tue, 29 Mar 2022 14:46:53 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 To: xuan.ding@intel.com, chenbo.xia@intel.com Cc: dev@dpdk.org, jiayu.hu@intel.com, stable@dpdk.org References: <20220221072743.88049-1-xuan.ding@intel.com> <20220224062803.72238-1-xuan.ding@intel.com> From: Maxime Coquelin Subject: Re: [PATCH v2] doc: fix vhost multi-queue reconnection In-Reply-To: <20220224062803.72238-1-xuan.ding@intel.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=maxime.coquelin@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org On 2/24/22 07:28, xuan.ding@intel.com wrote: > From: Xuan Ding > > Since QEMU 5.2.0 fixes the vhost multi-queue reconnection issue > in commit f66337bdbfda ("vhost-user: save features of multiqueues > if chardev is closed"), this patch removes the previous description > from known issue. > > Fixes: b37e95507e1b ("doc: add vhost multi-queue reconnection issue") > Cc: stable@dpdk.org > > Signed-off-by: Xuan Ding > --- > v2: > * Add fixes in commit title and log. > --- > doc/guides/rel_notes/known_issues.rst | 21 --------------------- > 1 file changed, 21 deletions(-) > > diff --git a/doc/guides/rel_notes/known_issues.rst b/doc/guides/rel_notes/known_issues.rst > index 187d9c942e..a8d1401a71 100644 > --- a/doc/guides/rel_notes/known_issues.rst > +++ b/doc/guides/rel_notes/known_issues.rst > @@ -884,24 +884,3 @@ Unsuitable IOVA mode may be picked as the default > > **Driver/Module**: > ALL. > - > -Vhost multi-queue reconnection failed with QEMU version >= 4.2.0 > ----------------------------------------------------------------- > - > -**Description** > - It's a QEMU regression bug (bad commit: c6beefd674ff). QEMU only saves > - acked features for one vhost-net when vhost quits. When vhost reconnects > - to virtio-net/virtio-pmd in multi-queue situations, the features been > - set multiple times are not consistent. > - > -**Implication** > - Vhost cannot reconnect back to virtio-net/virtio-pmd normally. > - > -**Resolution/Workaround**: > - It is possible to filter the incorrect acked features at vhost-user side. > - > -**Affected Environment/Platform**: > - ALL. > - > -**Driver/Module**: > - Virtual Device Poll Mode Driver (PMD). Instead of removing this information, I would rather update it to indicate the range of affected QEMU versions. What do you think? Thanks, Maxime