From patchwork Thu Mar 3 11:59:09 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergio Lopez Pascual X-Patchwork-Id: 12767396 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 E55DAC433F5 for ; Thu, 3 Mar 2022 12:09:28 +0000 (UTC) Received: from localhost ([::1]:33398 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nPkGt-0003KU-PK for qemu-devel@archiver.kernel.org; Thu, 03 Mar 2022 07:09:27 -0500 Received: from eggs.gnu.org ([209.51.188.92]:36580) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nPk82-0002Bo-Uh for qemu-devel@nongnu.org; Thu, 03 Mar 2022 07:00:20 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:57377) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nPk80-0003Pn-Kg for qemu-devel@nongnu.org; Thu, 03 Mar 2022 07:00:18 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1646308815; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=efzJa6/W9diGcwuLPP5Fb7/4uwCddpKtVjz83/Ys+RU=; b=U485DyfOOO0Lw6lKypm8oyImjySGyeiPwMFGKp1aslTn8Yl8X0eD1fukHZYFZqNJc7AOqn ZdMrgYSb4+pRysODuz4rGaEt4vgVHOa1a1IYWvVW8uPofWMOa6ArbdXCdAzEiNyiVF/M5N H18i0Chy9Ay0ubIu9Qr8nO4j6UQ179M= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-211-3W1kVpZMPwuJ_4tjpoIfAA-1; Thu, 03 Mar 2022 07:00:14 -0500 X-MC-Unique: 3W1kVpZMPwuJ_4tjpoIfAA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 9D791180FD72; Thu, 3 Mar 2022 12:00:12 +0000 (UTC) Received: from toolbox.redhat.com (unknown [10.33.37.20]) by smtp.corp.redhat.com (Postfix) with ESMTP id C2A4C842CC; Thu, 3 Mar 2022 12:00:07 +0000 (UTC) From: Sergio Lopez To: qemu-devel@nongnu.org Subject: [PATCH v3 2/4] vhost: use wfd on functions setting vring call fd Date: Thu, 3 Mar 2022 12:59:09 +0100 Message-Id: <20220303115911.20962-3-slp@redhat.com> In-Reply-To: <20220303115911.20962-1-slp@redhat.com> References: <20220303115911.20962-1-slp@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Received-SPF: pass client-ip=170.10.129.124; envelope-from=slp@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, 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: , Cc: Elena Ufimtseva , Fam Zheng , Matthew Rosato , John G Johnson , David Hildenbrand , Eric Farman , Alex Williamson , kvm@vger.kernel.org, qemu-block@nongnu.org, "Michael S. Tsirkin" , Halil Pasic , Christian Borntraeger , vgoyal@redhat.com, Thomas Huth , Sergio Lopez , Richard Henderson , qemu-s390x@nongnu.org, Stefan Hajnoczi , Jagannathan Raman , Kevin Wolf , Cornelia Huck , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Hanna Reitz , Paolo Bonzini Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" When ioeventfd is emulated using qemu_pipe(), only EventNotifier's wfd can be used for writing. Use the recently introduced event_notifier_get_wfd() function to obtain the fd that our peer must use to signal the vring. Signed-off-by: Sergio Lopez --- hw/virtio/vhost.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 7b03efccec..b643f42ea4 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -1287,7 +1287,7 @@ static int vhost_virtqueue_init(struct vhost_dev *dev, return r; } - file.fd = event_notifier_get_fd(&vq->masked_notifier); + file.fd = event_notifier_get_wfd(&vq->masked_notifier); r = dev->vhost_ops->vhost_set_vring_call(dev, &file); if (r) { VHOST_OPS_DEBUG(r, "vhost_set_vring_call failed"); @@ -1542,9 +1542,9 @@ void vhost_virtqueue_mask(struct vhost_dev *hdev, VirtIODevice *vdev, int n, if (mask) { assert(vdev->use_guest_notifier_mask); - file.fd = event_notifier_get_fd(&hdev->vqs[index].masked_notifier); + file.fd = event_notifier_get_wfd(&hdev->vqs[index].masked_notifier); } else { - file.fd = event_notifier_get_fd(virtio_queue_get_guest_notifier(vvq)); + file.fd = event_notifier_get_wfd(virtio_queue_get_guest_notifier(vvq)); } file.index = hdev->vhost_ops->vhost_get_vq_index(hdev, n);