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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Nov 2025 07:44:35.3778 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2c6c02fc-8e2f-41b2-4121-08de2cbfa528 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.232];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000E9CF.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS5PPF7B9F1F8E0 On Wed, 26 Nov 2025 06:17:25 +1000 Dave Airlie wrote: > On Tue, 25 Nov 2025 at 19:15, Christian K=C3=B6nig > wrote: > > > > On 11/25/25 10:08, Dave Airlie wrote: snip > So far I haven't heard anything about needing dma-buf interactions at > that level, and maybe Zhi has more insight into the future there. >=20 For VFIO parts, the vendor VFIO driver relies on the core driver's support to export the VM's framebuffer to the userspace either as type a) VFIO_GFX_PLANE_TYPE_REGION, framebuffer as a region or b) VFIO_GFX_PLANE_TYPE_DMABUF, framebuffer as a dmabuf, which is usually backed by a GEM object. NVIDIA vGPU uses VFIO_GFX_PLANE_TYPE_REGION, so dma-buf interactions are not required. > Dave.