From mboxrd@z Thu Jan 1 00:00:00 1970 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 840BAC433EF for ; Tue, 19 Oct 2021 07:03:20 +0000 (UTC) Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (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 3A23161212 for ; Tue, 19 Oct 2021 07:03:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 3A23161212 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 07C07406EA; Tue, 19 Oct 2021 07:03:20 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ljYuDapfzWBh; Tue, 19 Oct 2021 07:03:19 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp4.osuosl.org (Postfix) with ESMTPS id AF66F406EF; Tue, 19 Oct 2021 07:03:18 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 725B3C0011; Tue, 19 Oct 2021 07:03:18 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [IPv6:2605:bc80:3010::136]) by lists.linuxfoundation.org (Postfix) with ESMTP id C7571C000D for ; Tue, 19 Oct 2021 07:03:16 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id A7CDC60AFA for ; Tue, 19 Oct 2021 07:03:16 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp3.osuosl.org (amavisd-new); dkim=pass (1024-bit key) header.d=redhat.com Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id wEuCpvP5dyFz for ; Tue, 19 Oct 2021 07:03:16 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by smtp3.osuosl.org (Postfix) with ESMTPS id 02C8160ACC for ; Tue, 19 Oct 2021 07:03:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1634626994; 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=8Ls2xoHixA+tfe8phCW/0ZNzPdCyNd0Mm2yRie96RrA=; b=jFag4XL8BI5GWx4pbZ0R1utkliJ6GXQCsy6J+QWFQueQ8dXX9h++lyevbDhW3G4IER/kf2 Moh6/Inlif/FP+gLdDXdhvErccb4lmalNrnhiaLgAjY1Qof+RmfyiPXZow8+a7qAsTy7jB 5iOfr8Xg+cCves2UGD4KOlck78eBu2E= 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-370-GA9KKbCeNUKdCBf1dYVrmQ-1; Tue, 19 Oct 2021 03:03:11 -0400 X-MC-Unique: GA9KKbCeNUKdCBf1dYVrmQ-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 09AE2100C671; Tue, 19 Oct 2021 07:03:10 +0000 (UTC) Received: from localhost.localdomain (ovpn-12-155.pek2.redhat.com [10.72.12.155]) by smtp.corp.redhat.com (Postfix) with ESMTP id 87AF370956; Tue, 19 Oct 2021 07:02:55 +0000 (UTC) From: Jason Wang To: mst@redhat.com, jasowang@redhat.com Subject: [PATCH V3 03/10] virtio_config: introduce a new .enable_cbs method Date: Tue, 19 Oct 2021 15:01:45 +0800 Message-Id: <20211019070152.8236-4-jasowang@redhat.com> In-Reply-To: <20211019070152.8236-1-jasowang@redhat.com> References: <20211019070152.8236-1-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Cc: konrad.wilk@oracle.com, f.hetzelt@tu-berlin.de, linux-kernel@vger.kernel.org, david.kaplan@amd.com, virtualization@lists.linux-foundation.org X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" This patch introduces a new method to enable the callbacks for config and virtqueues. This will be used for making sure the virtqueue callbacks are only enabled after virtio_device_ready() if transport implements this method. 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..4d107ad31149 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. + * @enable_cbs: enable the callbacks + * 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 (*enable_cbs)(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->enable_cbs) + dev->config->enable_cbs(dev); + BUG_ON(status & VIRTIO_CONFIG_S_DRIVER_OK); dev->config->set_status(dev, status | VIRTIO_CONFIG_S_DRIVER_OK); } -- 2.25.1 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization