From patchwork Sat Apr 1 14:44:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 13197016 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5AF76C6FD1D for ; Sat, 1 Apr 2023 14:44:51 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4207710E26C; Sat, 1 Apr 2023 14:44:46 +0000 (UTC) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id A637A10E24F; Sat, 1 Apr 2023 14:44:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1680360279; x=1711896279; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=r+71o8G6Wo9sr6JKZnAb0/po7K9Eq9HOWBlcp5zMc44=; b=ZBFu/Ap+M6dMT9a0dGOSGmmVfbIY7x8Fl16M3gZYnrP9g3Ko1j7SLOw6 6aDDnoU0BMOtGrLY0bTiChlG8IjT8VAZQCJscZzZdGoEsxp4b7geNsPNA FUIOTc0dtUUbkoRkCHHmRBUKJhDB4q+kx6ehTg6P5v5CpKK95/dV7yyLA 2Igjo8X9SHq4/hN/JoiMy2icEWIO5oEj/AT/rrKkmktoh0G3pxkTfQZgg e4NT2tOguVfBmGKjX4YI3NC7V8Xv0d+zwxCDfieddnfXIkjpFwJdCCwYN fLuei1lO+m3Xh9V6YGjOQpi35VM2Wjx/Q6C9Ku2ME60aK1Mck4F6gM7z8 g==; X-IronPort-AV: E=McAfee;i="6600,9927,10667"; a="340385170" X-IronPort-AV: E=Sophos;i="5.98,310,1673942400"; d="scan'208";a="340385170" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Apr 2023 07:44:39 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10667"; a="662705855" X-IronPort-AV: E=Sophos;i="5.98,310,1673942400"; d="scan'208";a="662705855" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by orsmga006.jf.intel.com with ESMTP; 01 Apr 2023 07:44:38 -0700 From: Yi Liu To: alex.williamson@redhat.com, jgg@nvidia.com, kevin.tian@intel.com Date: Sat, 1 Apr 2023 07:44:27 -0700 Message-Id: <20230401144429.88673-11-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230401144429.88673-1-yi.l.liu@intel.com> References: <20230401144429.88673-1-yi.l.liu@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v3 10/12] vfio: Mark cdev usage in vfio_device X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mjrosato@linux.ibm.com, jasowang@redhat.com, xudong.hao@intel.com, peterx@redhat.com, terrence.xu@intel.com, chao.p.peng@linux.intel.com, linux-s390@vger.kernel.org, yi.l.liu@intel.com, kvm@vger.kernel.org, lulu@redhat.com, yanting.jiang@intel.com, joro@8bytes.org, nicolinc@nvidia.com, yan.y.zhao@intel.com, intel-gfx@lists.freedesktop.org, eric.auger@redhat.com, intel-gvt-dev@lists.freedesktop.org, yi.y.sun@linux.intel.com, cohuck@redhat.com, shameerali.kolothum.thodi@huawei.com, suravee.suthikulpanit@amd.com, robin.murphy@arm.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" There are users that need to check if vfio_device is opened as cdev. e.g. vfio-pci. This adds a flag in vfio_device, it will be set in the cdev path when device is opened. This is not used at this moment, but a preparation for vfio device cdev support. Signed-off-by: Yi Liu --- include/linux/vfio.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/linux/vfio.h b/include/linux/vfio.h index f8fb9ab25188..d9a0770e5fc1 100644 --- a/include/linux/vfio.h +++ b/include/linux/vfio.h @@ -62,6 +62,7 @@ struct vfio_device { struct iommufd_device *iommufd_device; bool iommufd_attached; #endif + bool cdev_opened; }; /** @@ -151,6 +152,12 @@ vfio_iommufd_physical_devid(struct vfio_device *vdev, u32 *id) ((int (*)(struct vfio_device *vdev, u32 *pt_id)) NULL) #endif +static inline bool vfio_device_cdev_opened(struct vfio_device *device) +{ + lockdep_assert_held(&device->dev_set->lock); + return device->cdev_opened; +} + /** * @migration_set_state: Optional callback to change the migration state for * devices that support migration. It's mandatory for