From patchwork Fri Mar 8 22:07:54 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Parav Pandit X-Patchwork-Id: 1053737 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=mellanox.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44GM8Y1nT3z9s9N for ; Sat, 9 Mar 2019 09:08:45 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726393AbfCHWIN (ORCPT ); Fri, 8 Mar 2019 17:08:13 -0500 Received: from mail-il-dmz.mellanox.com ([193.47.165.129]:42806 "EHLO mellanox.co.il" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726311AbfCHWIN (ORCPT ); Fri, 8 Mar 2019 17:08:13 -0500 Received: from Internal Mail-Server by MTLPINE1 (envelope-from parav@mellanox.com) with ESMTPS (AES256-SHA encrypted); 9 Mar 2019 00:08:09 +0200 Received: from sw-mtx-036.mtx.labs.mlnx (sw-mtx-036.mtx.labs.mlnx [10.12.150.149]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id x28M83SV002296; Sat, 9 Mar 2019 00:08:07 +0200 From: Parav Pandit To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, michal.lkml@markovi.net, davem@davemloft.net, gregkh@linuxfoundation.org, jiri@mellanox.com, kwankhede@nvidia.com Cc: parav@mellanox.com, alex.williamson@redhat.com, vuhuong@mellanox.com, yuvalav@mellanox.com, jakub.kicinski@netronome.com, kvm@vger.kernel.org Subject: [RFC net-next v1 1/3] vfio/mdev: Inherit dma masks of parent device Date: Fri, 8 Mar 2019 16:07:54 -0600 Message-Id: <1552082876-60228-2-git-send-email-parav@mellanox.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1552082876-60228-1-git-send-email-parav@mellanox.com> References: <1552082876-60228-1-git-send-email-parav@mellanox.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Inherit dma mask of parent device in child mdev devices, so that protocol stack can use right dma mask while doing dma mappings. Signed-off-by: Parav Pandit --- drivers/vfio/mdev/mdev_core.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/vfio/mdev/mdev_core.c b/drivers/vfio/mdev/mdev_core.c index 0212f0e..9b8bdc9 100644 --- a/drivers/vfio/mdev/mdev_core.c +++ b/drivers/vfio/mdev/mdev_core.c @@ -315,6 +315,10 @@ int mdev_device_create(struct kobject *kobj, struct device *dev, uuid_le uuid) mdev->dev.parent = dev; mdev->dev.bus = &mdev_bus_type; mdev->dev.release = mdev_device_release; + mdev->dev.dma_mask = dev->dma_mask; + mdev->dev.dma_parms = dev->dma_parms; + mdev->dev.coherent_dma_mask = dev->coherent_dma_mask; + dev_set_name(&mdev->dev, "%pUl", uuid.b); ret = device_register(&mdev->dev);