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 799C0A0C51; Wed, 21 Jul 2021 16:37:32 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id E84024068B; Wed, 21 Jul 2021 16:37:31 +0200 (CEST) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) by mails.dpdk.org (Postfix) with ESMTP id 962B74014E for ; Wed, 21 Jul 2021 16:37:30 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1626878249; 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=fNnanqfaepFgYGc1Rb8sgxEnQUdbvwgctxYF5VB5Vww=; b=RyX65+z5cU5+A1AEABKkVAXu8dugQR8S6F0+vcLToBhEsQOiGn14gc+7x0ePLDV7wkK4uk Fwa4ygILeUknRFXNTxMlE2PmuIFOtM+o/lgwn6NAuZqTs/p+36nGU9ESGgrs87P5QMENxn 0B+i8DLOC61bKBbRHoHBkyO9L/vfVGc= 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-349-sDDoF510OuSNlZqEhNA2mQ-1; Wed, 21 Jul 2021 10:37:26 -0400 X-MC-Unique: sDDoF510OuSNlZqEhNA2mQ-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 CCFF018C8C03; Wed, 21 Jul 2021 14:37:24 +0000 (UTC) Received: from [10.36.110.10] (unknown [10.36.110.10]) by smtp.corp.redhat.com (Postfix) with ESMTPS id A83575D9DD; Wed, 21 Jul 2021 14:37:23 +0000 (UTC) To: Cheng Jiang , Chenbo.Xia@intel.com Cc: dev@dpdk.org, jiayu.hu@intel.com, yvonnex.yang@intel.com References: <20210602042802.31943-1-cheng1.jiang@intel.com> <20210719081022.12949-1-cheng1.jiang@intel.com> <20210719081022.12949-5-cheng1.jiang@intel.com> From: Maxime Coquelin Message-ID: <9113bca9-9bd9-f371-4c0b-26357c4cc6d0@redhat.com> Date: Wed, 21 Jul 2021 16:37:22 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210719081022.12949-5-cheng1.jiang@intel.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 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-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] [PATCH v6 4/5] examples/vhost: handle memory hotplug for async vhost 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 Sender: "dev" On 7/19/21 10:10 AM, Cheng Jiang wrote: > When the guest memory is hotplugged, the vhost application which > enables DMA acceleration must stop DMA transfers before the vhost > re-maps the guest memory. > > To accomplish that, we need to do these changes in the vhost sample: > 1. add inflight packets count. > 2. add vring_state_changed() callback. > 3. add inflight packets clear process in destroy_device() and > vring_state_changed(). > > Signed-off-by: Cheng Jiang > --- > examples/vhost/main.c | 55 +++++++++++++++++++++++++++++++++++++++++-- > examples/vhost/main.h | 1 + > 2 files changed, 54 insertions(+), 2 deletions(-) > Reviewed-by: Maxime Coquelin Thanks, Maxime