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Tue, 25 Oct 2022 18:17:19 +0000 Received: from LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::7a81:a4e4:bb9c:d1de]) by LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::7a81:a4e4:bb9c:d1de%6]) with mapi id 15.20.5746.021; Tue, 25 Oct 2022 18:17:19 +0000 From: Jason Gunthorpe To: Alexander Gordeev , David Airlie , Tony Krowiak , Alex Williamson , Christian Borntraeger , Cornelia Huck , Daniel Vetter , Diana Craciun , dri-devel@lists.freedesktop.org, Eric Auger , Eric Farman , Harald Freudenberger , Vasily Gorbik , Heiko Carstens , intel-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, iommu@lists.linux.dev, Jani Nikula , Jason Herne , Joonas Lahtinen , Joerg Roedel , Kevin Tian , kvm@vger.kernel.org, linux-s390@vger.kernel.org, Longfang Liu , Matthew Rosato , Peter Oberparleiter , Halil Pasic , Robin Murphy , Rodrigo Vivi , Shameer Kolothum , Sven Schnelle , Tvrtko Ursulin , Vineeth Vijayan , Will Deacon , Yishai Hadas , Zhenyu Wang , Zhi Wang Date: Tue, 25 Oct 2022 15:17:10 -0300 Message-Id: <4-v1-4991695894d8+211-vfio_iommufd_jgg@nvidia.com> In-Reply-To: <0-v1-4991695894d8+211-vfio_iommufd_jgg@nvidia.com> References: X-ClientProxiedBy: MN2PR11CA0018.namprd11.prod.outlook.com (2603:10b6:208:23b::23) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|SN7PR12MB7201:EE_ X-MS-Office365-Filtering-Correlation-Id: 2c48c950-48b3-4846-dbd3-08dab6b526da X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2c48c950-48b3-4846-dbd3-08dab6b526da X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Oct 2022 18:17:18.4496 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 9q9Rlyi9obQygyKVIylZ2CUizxdP3yxXa9XmsIPvb/6sPnnIv/EkdVwbqviZCM2j X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB7201 Subject: [Intel-gfx] [PATCH 04/10] vfio: Move storage of allow_unsafe_interrupts to vfio_main.c 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: Yi Liu , Nicolin Chen , Lu Baolu Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" This legacy module knob has become uAPI, when set on the vfio_iommu_type1 it disables some security protections in the iommu drivers. Move the storage for this knob to vfio_main.c so that iommufd can access it too. Signed-off-by: Jason Gunthorpe --- drivers/vfio/vfio.h | 2 ++ drivers/vfio/vfio_iommu_type1.c | 5 ++--- drivers/vfio/vfio_main.c | 3 +++ 3 files changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/vfio/vfio.h b/drivers/vfio/vfio.h index f95f4925b83bbd..54e5a8e0834ccb 100644 --- a/drivers/vfio/vfio.h +++ b/drivers/vfio/vfio.h @@ -130,4 +130,6 @@ extern bool vfio_noiommu __read_mostly; enum { vfio_noiommu = false }; #endif +extern bool vfio_allow_unsafe_interrupts; + #endif diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index 23c24fe98c00d4..186e33a006d314 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -44,9 +44,8 @@ #define DRIVER_AUTHOR "Alex Williamson " #define DRIVER_DESC "Type1 IOMMU driver for VFIO" -static bool allow_unsafe_interrupts; module_param_named(allow_unsafe_interrupts, - allow_unsafe_interrupts, bool, S_IRUGO | S_IWUSR); + vfio_allow_unsafe_interrupts, bool, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(allow_unsafe_interrupts, "Enable VFIO IOMMU support for on platforms without interrupt remapping support."); @@ -2282,7 +2281,7 @@ static int vfio_iommu_type1_attach_group(void *iommu_data, iommu_group_for_each_dev(iommu_group, (void *)IOMMU_CAP_INTR_REMAP, vfio_iommu_device_capable); - if (!allow_unsafe_interrupts && !msi_remap) { + if (!vfio_allow_unsafe_interrupts && !msi_remap) { pr_warn("%s: No interrupt remapping support. Use the module param \"allow_unsafe_interrupts\" to enable VFIO IOMMU support on this platform\n", __func__); ret = -EPERM; diff --git a/drivers/vfio/vfio_main.c b/drivers/vfio/vfio_main.c index 8d809ecd982b39..1e414b2c48a511 100644 --- a/drivers/vfio/vfio_main.c +++ b/drivers/vfio/vfio_main.c @@ -51,6 +51,9 @@ static struct vfio { struct ida device_ida; } vfio; +bool vfio_allow_unsafe_interrupts; +EXPORT_SYMBOL_GPL(vfio_allow_unsafe_interrupts); + static DEFINE_XARRAY(vfio_device_set_xa); static const struct file_operations vfio_group_fops;