From patchwork Wed Apr 26 14:54:15 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 13224671 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 EBB63C77B78 for ; Wed, 26 Apr 2023 14:54:38 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6533110E90A; Wed, 26 Apr 2023 14:54:38 +0000 (UTC) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by gabe.freedesktop.org (Postfix) with ESMTPS id F2B0810E39F; Wed, 26 Apr 2023 14:54:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1682520875; x=1714056875; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=io8hL9bTUpAjOWSG+LYha6CPKcMkhPDUJOxDgMz4F3c=; b=di0q9kjddOmMibLKyv3hwMmpwoEqs2DfvTGMsVHkLGHkcpRXOOVphFi1 LnclwTjfu1iXZtDVGrHN4vvQJbcrtQfXCSLyPxkO1tMlN1/UarYgmgBb7 S68Ei4h/gJ567LigzfYgyF3mV3CTAV7c2aWLvhTWxgWl+53ztTljiFPxF ND5hKFL85CQKEq9TfTVViraiLMkWEHkY9OZ4jNJ2g7BJvHXEFzVtcm1bU MEzWSoXdluBVQdYnq6IZWsxNKIU7mLzHtzuL6nhi7vnsTAADgWrdMQQXK QfqPR0cjh6AGhtH1J7vmMok1ex6OqRDMMY+WiV53wmC/YwViy1K6240CC w==; X-IronPort-AV: E=McAfee;i="6600,9927,10692"; a="433410320" X-IronPort-AV: E=Sophos;i="5.99,228,1677571200"; d="scan'208";a="433410320" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Apr 2023 07:54:34 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10692"; a="758644033" X-IronPort-AV: E=Sophos;i="5.99,228,1677571200"; d="scan'208";a="758644033" Received: from 984fee00a4c6.jf.intel.com ([10.165.58.231]) by fmsmga008.fm.intel.com with ESMTP; 26 Apr 2023 07:54:34 -0700 From: Yi Liu To: alex.williamson@redhat.com, jgg@nvidia.com, kevin.tian@intel.com Date: Wed, 26 Apr 2023 07:54:15 -0700 Message-Id: <20230426145419.450922-6-yi.l.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230426145419.450922-1-yi.l.liu@intel.com> References: <20230426145419.450922-1-yi.l.liu@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v4 5/9] 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, zhenzhong.duan@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" Use it to differentiate whether to report group_id or dev_id in revised VFIO_DEVICE_GET_PCI_HOT_RESET_INFO ioctl. Though it is not set at this moment introducing it now allows us to get hot reset ready for cdev. Signed-off-by: Yi Liu Reviewed-by: Kevin Tian --- include/linux/vfio.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/linux/vfio.h b/include/linux/vfio.h index 4ee613924435..298f4ef16be7 100644 --- a/include/linux/vfio.h +++ b/include/linux/vfio.h @@ -63,6 +63,7 @@ struct vfio_device { bool iommufd_attached; #endif bool noiommu; + bool cdev_opened; }; /** @@ -140,6 +141,12 @@ int vfio_iommufd_emulated_attach_ioas(struct vfio_device *vdev, u32 *pt_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; +} + /** * struct vfio_migration_ops - VFIO bus device driver migration callbacks *