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[23.128.96.18]) by mx.google.com with ESMTP id l26si12637220edw.77.2021.10.11.23.55.10; Mon, 11 Oct 2021 23:55:35 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=NJfcVmOM; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233268AbhJLGzQ (ORCPT + 99 others); Tue, 12 Oct 2021 02:55:16 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:28846 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233439AbhJLGzO (ORCPT ); Tue, 12 Oct 2021 02:55:14 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1634021592; 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=XtqcK8OBOXRr6ZBw1JH6UfUdpU3S//kleHWjxjhJDLY=; b=NJfcVmOMOEN/yzjLx/pgmIEF5J6vivsE/djBFfrXmuTHNUXssoAKMnom42ytc5xdSHmyev OYDkiPBBlveJkIpIB91s2P+eByJXh1cTCzHUeeldSasHzDXEw+PBO/3m2WUtXO/wxlqu0l aNZuc55mHg/sepwt1UJsJAC7MJNxyiw= 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-594-sCUko4A5MNODDv_V61Wccw-1; Tue, 12 Oct 2021 02:53:09 -0400 X-MC-Unique: sCUko4A5MNODDv_V61Wccw-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 1F15E8031D8; Tue, 12 Oct 2021 06:52:50 +0000 (UTC) Received: from localhost.localdomain (ovpn-13-111.pek2.redhat.com [10.72.13.111]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8E5145F4E9; Tue, 12 Oct 2021 06:52:47 +0000 (UTC) From: Jason Wang To: mst@redhat.com, jasowang@redhat.com Cc: virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, f.hetzelt@tu-berlin.de, david.kaplan@amd.com, konrad.wilk@oracle.com Subject: [PATCH V2 05/12] virtio_config: introduce a new ready method Date: Tue, 12 Oct 2021 14:52:20 +0800 Message-Id: <20211012065227.9953-6-jasowang@redhat.com> In-Reply-To: <20211012065227.9953-1-jasowang@redhat.com> References: <20211012065227.9953-1-jasowang@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Jason Wang --- include/linux/virtio_config.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index 8519b3ae5d52..f2891c6221a1 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -23,6 +23,8 @@ struct virtio_shm_region { * any of @get/@set, @get_status/@set_status, or @get_features/ * @finalize_features are NOT safe to be called from an atomic * context. + * @ready: make the device ready + * vdev: the virtio_device * @get: read the value of a configuration field * vdev: the virtio_device * offset: the offset of the configuration field @@ -75,6 +77,7 @@ struct virtio_shm_region { */ typedef void vq_callback_t(struct virtqueue *); struct virtio_config_ops { + void (*ready)(struct virtio_device *vdev); void (*get)(struct virtio_device *vdev, unsigned offset, void *buf, unsigned len); void (*set)(struct virtio_device *vdev, unsigned offset, @@ -229,6 +232,9 @@ void virtio_device_ready(struct virtio_device *dev) { unsigned status = dev->config->get_status(dev); + if (dev->config->ready) + dev->config->ready(dev); + BUG_ON(status & VIRTIO_CONFIG_S_DRIVER_OK); dev->config->set_status(dev, status | VIRTIO_CONFIG_S_DRIVER_OK); } -- 2.25.1