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 1459241BBD; Fri, 3 Feb 2023 15:57:36 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 294944067B; Fri, 3 Feb 2023 15:57:35 +0100 (CET) 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 B13674021E for ; Fri, 3 Feb 2023 15:57:33 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1675436253; 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=PoA7J44NGTFHuT0R76tLXGh2wiGWGN7CP7+jFRk1Xsg=; b=IfS0PkXD1BgrXh/tqEodQFmzJCzYFAWeW44EcXHzqWT8LOSHBSrqXDIq8kIofgzbcz8z25 8VkdHIuj5y6A3HXOuDI4pt/gmkjgIF+X4YVNs3XCPGNYOFX9Kun2FD7UHRvvxWOI31jdbz 05BWOAv9pxm8GLHVLhdfiEHwvIUE2nE= 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-461-OpCwAzQEMiO4_v9Kq-p9OA-1; Fri, 03 Feb 2023 09:57:32 -0500 X-MC-Unique: OpCwAzQEMiO4_v9Kq-p9OA-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id A2D823C0DDA9; Fri, 3 Feb 2023 14:57:31 +0000 (UTC) Received: from [10.39.208.28] (unknown [10.39.208.28]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B028C53AA; Fri, 3 Feb 2023 14:57:30 +0000 (UTC) Message-ID: Date: Fri, 3 Feb 2023 15:57:29 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.6.0 Subject: Re: [PATCH] vdpa/ifc: add live migration for block device To: Andy Pei , dev@dpdk.org Cc: chenbo.xia@intel.com, xiao.w.wang@intel.com References: <1671004060-62997-1-git-send-email-andy.pei@intel.com> From: Maxime Coquelin In-Reply-To: <1671004060-62997-1-git-send-email-andy.pei@intel.com> X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 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: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org On 12/14/22 08:47, Andy Pei wrote: > When we use "sw-live-migration=1" in arguments, we run in SW assisted > live migration mode. > > In SW assisted live migration mode, driver will stop the device and > setup a mediated virtio ring to relay the communication between the > virtio driver and the VDPA device. > > For block devices, we have to make sure that each IO is completed. > When we terminate the above mediated virtio ring, we stop > notifying queue about new IOs, wait for all the in-flight IOs to > be completed. > > Signed-off-by: Andy Pei > --- > drivers/vdpa/ifc/ifcvf_vdpa.c | 22 ++++++++++++++++++++++ > 1 file changed, 22 insertions(+) > Applied to dpdk-next-virtio/main. Thanks, Maxime