From patchwork Wed Jul 17 10:52:55 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 11047647 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2599914DB for ; Wed, 17 Jul 2019 10:54:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 10AE528727 for ; Wed, 17 Jul 2019 10:54:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 008862873C; Wed, 17 Jul 2019 10:54:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 96FDF28727 for ; Wed, 17 Jul 2019 10:54:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726424AbfGQKyc (ORCPT ); Wed, 17 Jul 2019 06:54:32 -0400 Received: from mx1.redhat.com ([209.132.183.28]:36348 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725936AbfGQKy3 (ORCPT ); Wed, 17 Jul 2019 06:54:29 -0400 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C1A253066752; Wed, 17 Jul 2019 10:54:29 +0000 (UTC) Received: from hp-dl380pg8-01.lab.eng.pek2.redhat.com (hp-dl380pg8-01.lab.eng.pek2.redhat.com [10.73.8.10]) by smtp.corp.redhat.com (Postfix) with ESMTP id D1D821001DE3; Wed, 17 Jul 2019 10:54:18 +0000 (UTC) From: Jason Wang To: mst@redhat.com, jasowang@redhat.com Cc: kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, jfreimann@redhat.com, tiwei.bie@intel.com, maxime.coquelin@redhat.com Subject: [PATCH V3 15/15] vhost: enable packed virtqueues Date: Wed, 17 Jul 2019 06:52:55 -0400 Message-Id: <20190717105255.63488-16-jasowang@redhat.com> In-Reply-To: <20190717105255.63488-1-jasowang@redhat.com> References: <20190717105255.63488-1-jasowang@redhat.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.46]); Wed, 17 Jul 2019 10:54:29 +0000 (UTC) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch enables packed virtqueue support for vhost. Testpmd (virtio-user) + vhost_net shows about 2.6% improvemetn on TX PPS: Before: 5.75Mpps After : 5.90Mpps Signed-off-by: Jason Wang --- drivers/vhost/vhost.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index bb3f8bb763b9..5483eea84a5c 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -326,7 +326,8 @@ enum { (1ULL << VIRTIO_RING_F_EVENT_IDX) | (1ULL << VHOST_F_LOG_ALL) | (1ULL << VIRTIO_F_ANY_LAYOUT) | - (1ULL << VIRTIO_F_VERSION_1) + (1ULL << VIRTIO_F_VERSION_1) | + (1ULL << VIRTIO_F_RING_PACKED) }; static inline bool vhost_has_feature(struct vhost_virtqueue *vq, int bit)