From nobody Mon Feb 9 12:26:08 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1553247068012413.6847205199592; Fri, 22 Mar 2019 02:31:08 -0700 (PDT) Received: from localhost ([127.0.0.1]:54488 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h7GW0-00081j-VV for importer@patchew.org; Fri, 22 Mar 2019 05:31:05 -0400 Received: from eggs.gnu.org ([209.51.188.92]:51329) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h7GTa-0006I0-7J for qemu-devel@nongnu.org; Fri, 22 Mar 2019 05:28:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1h7GTZ-00046N-2l for qemu-devel@nongnu.org; Fri, 22 Mar 2019 05:28:34 -0400 Received: from mx1.redhat.com ([209.132.183.28]:51734) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1h7GTY-00043X-Ji for qemu-devel@nongnu.org; Fri, 22 Mar 2019 05:28:32 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 416F5308339B; Fri, 22 Mar 2019 09:28:31 +0000 (UTC) Received: from jason-ThinkPad-X1-Carbon-6th.redhat.com (ovpn-12-96.pek2.redhat.com [10.72.12.96]) by smtp.corp.redhat.com (Postfix) with ESMTP id EE3995D9D2; Fri, 22 Mar 2019 09:28:21 +0000 (UTC) From: Jason Wang To: mst@redhat.com, yan@daynix.com, yuri.benditovich@daynix.com, qemu-devel@nongnu.org Date: Fri, 22 Mar 2019 17:28:03 +0800 Message-Id: <20190322092806.21838-2-jasowang@redhat.com> In-Reply-To: <20190322092806.21838-1-jasowang@redhat.com> References: <20190322092806.21838-1-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.44]); Fri, 22 Mar 2019 09:28:31 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [RFT 1/4] virtio-bus: introduce a new method for querying the queue status X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Wang Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" Sometime we need to check whether a queue is enabled, e.g for vhost, we don't want to start the backend for the virtqueues that is not enabled. So introduce a new method to do this. Signed-off-by: Jason Wang --- include/hw/virtio/virtio-bus.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/hw/virtio/virtio-bus.h b/include/hw/virtio/virtio-bus.h index 7fec9dc929..db20fecf13 100644 --- a/include/hw/virtio/virtio-bus.h +++ b/include/hw/virtio/virtio-bus.h @@ -84,6 +84,10 @@ typedef struct VirtioBusClass { */ int (*ioeventfd_assign)(DeviceState *d, EventNotifier *notifier, int n, bool assign); + /* + * is the queue enabled? + */ + bool (*queue_enabled)(DeviceState *d, int n); /* * Does the transport have variable vring alignment? * (ie can it ever call virtio_queue_set_align()?) --=20 2.19.1