From patchwork Tue Feb 9 15:37:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Eugenio Perez Martin X-Patchwork-Id: 12078467 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A3034C433E0 for ; Tue, 9 Feb 2021 15:43:03 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 18C6D64E08 for ; Tue, 9 Feb 2021 15:43:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 18C6D64E08 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:56516 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l9VAM-0007UG-3h for qemu-devel@archiver.kernel.org; Tue, 09 Feb 2021 10:43:02 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:40662) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l9V5v-0003PC-Gn for qemu-devel@nongnu.org; Tue, 09 Feb 2021 10:38:27 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:23652) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1l9V5q-0008Cm-6P for qemu-devel@nongnu.org; Tue, 09 Feb 2021 10:38:26 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1612885101; 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=pvbvc9mRWdSbx+tqii1T5KfB2fGwy5/EA0WWIowXN54=; b=NFs35mUIQ0lg/BdrZO/67g1LEoLdc5WGSHlmkaVPrfuwTRxqwr6kG2tsbduvQxhn25lDwT A/PyKWXASDxmGHqQTnp2/9WRkwGFs4+XJxH4FwUrb+ifzfFPalMt4xAhLMrZ9we2b+Q4mT NjhM/sAnqeYt0X44UX6BeQ2XR/6GxQE= 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-179-jDrx0rwtM-6KCdLlHAgwow-1; Tue, 09 Feb 2021 10:38:19 -0500 X-MC-Unique: jDrx0rwtM-6KCdLlHAgwow-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E8831100B3B0; Tue, 9 Feb 2021 15:38:17 +0000 (UTC) Received: from eperezma.remote.csb (ovpn-113-210.ams2.redhat.com [10.36.113.210]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8609060CCD; Tue, 9 Feb 2021 15:38:13 +0000 (UTC) From: =?utf-8?q?Eugenio_P=C3=A9rez?= To: qemu-devel@nongnu.org Subject: [RFC v2 2/7] virtio: Add virtio_queue_host_notifier_status Date: Tue, 9 Feb 2021 16:37:52 +0100 Message-Id: <20210209153757.1653598-3-eperezma@redhat.com> In-Reply-To: <20210209153757.1653598-1-eperezma@redhat.com> References: <20210209153757.1653598-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eperezma@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -33 X-Spam_score: -3.4 X-Spam_bar: --- X-Spam_report: (-3.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.57, 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_H3=0.001, RCVD_IN_MSPIKE_WL=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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Parav Pandit , "Michael S. Tsirkin" , Jason Wang , Juan Quintela , Markus Armbruster , virtualization@lists.linux-foundation.org, Harpreet Singh Anand , Xiao W Wang , Stefan Hajnoczi , Eli Cohen , Rob Miller , Michael Lilja , Jim Harford , Stefano Garzarella Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This allows shadow virtqueue code to assert the queue status before making changes. Signed-off-by: Eugenio Pérez --- include/hw/virtio/virtio.h | 1 + hw/virtio/virtio.c | 5 +++++ 2 files changed, 6 insertions(+) diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index b7ece7a6a8..227cec13a8 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -316,6 +316,7 @@ void virtio_device_release_ioeventfd(VirtIODevice *vdev); bool virtio_device_ioeventfd_enabled(VirtIODevice *vdev); EventNotifier *virtio_queue_get_host_notifier(VirtQueue *vq); void virtio_queue_set_host_notifier_enabled(VirtQueue *vq, bool enabled); +bool virtio_queue_host_notifier_status(const VirtQueue *vq); void virtio_queue_host_notifier_read(EventNotifier *n); void virtio_queue_aio_set_host_notifier_handler(VirtQueue *vq, AioContext *ctx, VirtIOHandleAIOOutput handle_output); diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 1fd1917ca0..53473ae4df 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -3594,6 +3594,11 @@ EventNotifier *virtio_queue_get_host_notifier(VirtQueue *vq) return &vq->host_notifier; } +bool virtio_queue_host_notifier_status(const VirtQueue *vq) +{ + return vq->host_notifier_enabled; +} + void virtio_queue_set_host_notifier_enabled(VirtQueue *vq, bool enabled) { vq->host_notifier_enabled = enabled;