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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: 19800e18-4dc5-4084-0fc3-08dac12393b9 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Nov 2022 00:52:57.4772 (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: 9TtFiYtKAjNalSUvvi77B/qRsbKt1xdvtkpzuXZ5ZmsxUEsQwBnJPJPpeemq1ru/ X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR12MB6686 Subject: [Intel-gfx] [PATCH v2 04/11] 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: "Liu, Yi L" , 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. The may need enhancing as we learn more about how necessary allow_unsafe_interrupts is in the current state of the world. If vfio container is disabled then this option will not be available to the user. Tested-by: Nicolin Chen 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 8c2dcb481ae10b..e1fec1db6a3c93 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;