From patchwork Thu Dec 7 17:39:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Si-Wei Liu X-Patchwork-Id: 13483826 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 3F219C4167B for ; Thu, 7 Dec 2023 18:57:13 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rBJSj-0003mf-QY; Thu, 07 Dec 2023 13:51:05 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rBJSM-0003bD-25 for qemu-devel@nongnu.org; Thu, 07 Dec 2023 13:50:42 -0500 Received: from mx0a-00069f02.pphosted.com ([205.220.165.32]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rBJSJ-00074q-3K for qemu-devel@nongnu.org; Thu, 07 Dec 2023 13:50:40 -0500 Received: from pps.filterd (m0333521.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3B7HFTxP007979; Thu, 7 Dec 2023 18:50:36 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2023-11-20; bh=q/OD/SQMRrvfSZtobhfq0UPv1L+/kMxXzcbtd0Vkdy8=; b=g52EoJ5jXOZ34zk1SZVNWxuGqQrD2O1C0iQkwXINSzKibrZbw9dd804gBoi52VSG1tCO tBrDcsKB0FuZGPC9WSrX6l33SzBlhTSMfoap+9CO5e0gdyMMGQnonN2r+rnWS5imA1SZ xpfnmp68OPvQH5Mge1UVb1lejBg6bzX2QzjnL2EUybxJWQEXIGNTjBmuXcHkrjZD3MJw 7FR3Nv2MlLNthqMr7ZtXkjHlAA//i/CplTj4oJ0CG78KTH2t4bc+/5itGwMJHxbKKuEF v05A2uc8LiqRMrvZYc6agSDPebUYvzqDbHpagMhXq3QZaA3Xy0Bw12Ddf4yKR1DKuooy OA== Received: from phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta01.appoci.oracle.com [138.1.114.2]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3utd0hmjtj-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 07 Dec 2023 18:50:36 +0000 Received: from pps.filterd (phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 3B7HW79E039466; Thu, 7 Dec 2023 18:50:35 GMT Received: from pps.reinject (localhost [127.0.0.1]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 3utan7vhtc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 07 Dec 2023 18:50:35 +0000 Received: from phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 3B7Io90O008067; Thu, 7 Dec 2023 18:50:34 GMT Received: from ban25x6uut24.us.oracle.com (ban25x6uut24.us.oracle.com [10.153.73.24]) by phxpaimrmta01.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTP id 3utan7vh2k-17; Thu, 07 Dec 2023 18:50:34 +0000 From: Si-Wei Liu To: eperezma@redhat.com, jasowang@redhat.com, mst@redhat.com, dtatulea@nvidia.com, leiyang@redhat.com, yin31149@gmail.com, boris.ostrovsky@oracle.com, jonah.palmer@oracle.com Cc: qemu-devel@nongnu.org Subject: [PATCH 16/40] vdpa: indicate SVQ switching via flag Date: Thu, 7 Dec 2023 09:39:29 -0800 Message-Id: <1701970793-6865-17-git-send-email-si-wei.liu@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1701970793-6865-1-git-send-email-si-wei.liu@oracle.com> References: <1701970793-6865-1-git-send-email-si-wei.liu@oracle.com> X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-07_15,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 phishscore=0 spamscore=0 malwarescore=0 suspectscore=0 mlxscore=0 adultscore=0 bulkscore=0 mlxlogscore=959 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2312070156 X-Proofpoint-GUID: T7qjZS8JQ86YnXnSajyUbZQKDxKYOjEt X-Proofpoint-ORIG-GUID: T7qjZS8JQ86YnXnSajyUbZQKDxKYOjEt Received-SPF: pass client-ip=205.220.165.32; envelope-from=si-wei.liu@oracle.com; helo=mx0a-00069f02.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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-bounces+qemu-devel=archiver.kernel.org@nongnu.org svq_switching indicates the case where SVQ mode change is on going. Positive (1) means switching from the normal passthrough mode to SVQ mode, and negative (-1) meaning switch SVQ back to the passthrough; zero (0) indicates that there's no SVQ mode switch taking place. Signed-off-by: Si-Wei Liu --- net/vhost-vdpa.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 7b8f047..04718b2 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -320,6 +320,7 @@ static void vhost_vdpa_net_log_global_enable(VhostVDPAState *s, bool enable) data_queue_pairs = n->multiqueue ? n->max_queue_pairs : 1; cvq = virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ) ? n->max_ncs - n->max_queue_pairs : 0; + v->shared->svq_switching = enable ? 1 : -1; /* * TODO: vhost_net_stop does suspend, get_base and reset. We can be smarter * in the future and resume the device if read-only operations between @@ -332,6 +333,7 @@ static void vhost_vdpa_net_log_global_enable(VhostVDPAState *s, bool enable) if (unlikely(r < 0)) { error_report("unable to start vhost net: %s(%d)", g_strerror(-r), -r); } + v->shared->svq_switching = 0; } static void vdpa_net_migration_state_notifier(Notifier *notifier, void *data)