From patchwork Fri Feb 24 15:54:26 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 13151468 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 59D41C61DA3 for ; Fri, 24 Feb 2023 15:56:30 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pVaPb-0005P3-1X; Fri, 24 Feb 2023 10:55:07 -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 1pVaPX-0005N9-Qe for qemu-devel@nongnu.org; Fri, 24 Feb 2023 10:55:04 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pVaPW-0005Wa-3b for qemu-devel@nongnu.org; Fri, 24 Feb 2023 10:55:03 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1677254101; 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=eEeRfwwIN44/Adg4INU1tbOT+msU8OVisKYfCUJYZrI=; b=SJwdJFZDwhsNxjDh3oJ4kZfbQU/1CymqAzzoQnzCnUgvp+OovF3roeatT/e9KLPEaJ6a3R ft66eizvnByeuGa9VyhQxwUD69SRqut4v+Xo2al5DvzxoSP0+NNiloX1bIaawHI0rYkwUq nbw/l1WUQUbpEBV+OLFORlZWIjNOTg4= 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-364--KdNxvwhNM6j9Dufd5G8tg-1; Fri, 24 Feb 2023 10:54:55 -0500 X-MC-Unique: -KdNxvwhNM6j9Dufd5G8tg-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id CA0523804530; Fri, 24 Feb 2023 15:54:53 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.85]) by smtp.corp.redhat.com (Postfix) with ESMTP id EA0D7C15BA0; Fri, 24 Feb 2023 15:54:50 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Stefano Garzarella , Shannon Nelson , Jason Wang , Gautam Dawar , Laurent Vivier , alvaro.karsz@solid-run.com, longpeng2@huawei.com, virtualization@lists.linux-foundation.org, Stefan Hajnoczi , Cindy Lu , "Michael S. Tsirkin" , si-wei.liu@oracle.com, Liuxiangdong , Parav Pandit , Eli Cohen , Zhu Lingshan , Harpreet Singh Anand , "Gonglei (Arei)" , Lei Yang Subject: [PATCH v4 03/15] vdpa: stop svq at vhost_vdpa_dev_start(false) Date: Fri, 24 Feb 2023 16:54:26 +0100 Message-Id: <20230224155438.112797-4-eperezma@redhat.com> In-Reply-To: <20230224155438.112797-1-eperezma@redhat.com> References: <20230224155438.112797-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.8 Received-SPF: pass client-ip=170.10.133.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 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 It used to be done at vhost_vdpa_svq_cleanup, since a device couldn't switch to SVQ mode dynamically. Now that we need to fetch the state and trust SVQ will not modify guest's used_idx at migration, stop effectively SVQ at suspend time, as a real device would do. Leaving old vhost_svq_stop call at vhost_vdpa_svq_cleanup, as its supported to call it many times and it follows other operations that are called redundantly there too: * vhost_vdpa_host_notifiers_uninit * memory_listener_unregister Signed-off-by: Eugenio Pérez --- v3: New in v3 --- hw/virtio/vhost-vdpa.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 4f72a52a43..d9260191cc 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -1100,10 +1100,11 @@ static void vhost_vdpa_svqs_stop(struct vhost_dev *dev) for (unsigned i = 0; i < v->shadow_vqs->len; ++i) { VhostShadowVirtqueue *svq = g_ptr_array_index(v->shadow_vqs, i); + + vhost_svq_stop(svq); vhost_vdpa_svq_unmap_rings(dev, svq); event_notifier_cleanup(&svq->hdev_kick); - event_notifier_cleanup(&svq->hdev_call); } }