Commit ffdf9687 authored by Matthew Brost's avatar Matthew Brost
Browse files

drm/xe: Don't trigger rebind on initial dma-buf validation 



On the first validate of an imported dma-buf (initial bind), the device
has no GPU mappings, so a rebind is unnecessary. Rebinding here is
harmful in multi-GPU setups and for VMs using preempt-fence mode, as it
would evict in-flight GPU work.

v2:
 - Drop dma_buf_validated, check for XE_PL_SYSTEM (Thomas)

Fixes: dd08ebf6 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Signed-off-by: default avatarMatthew Brost <matthew.brost@intel.com>
Reviewed-by: default avatarThomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://lore.kernel.org/r/20250825152841.3837378-1-matthew.brost@intel.com
parent 358ee50a

drivers/gpu/drm/xe/xe_bo.c

+2 −1
Original line number Diff line number Diff line
@@ -816,6 +816,7 @@ static int xe_bo_move(struct ttm_buffer_object *ttm_bo, bool evict, 
	}



	if (ttm_bo->type == ttm_bo_type_sg) {

		if (new_mem->mem_type == XE_PL_SYSTEM)

			ret = xe_bo_move_notify(bo, ctx);

		if (!ret)

			ret = xe_bo_move_dmabuf(ttm_bo, new_mem);