From 409b9499099b4ad14ca60b59c6edfebfaf74f907 Mon Sep 17 00:00:00 2001 From: Sanjay Yadav Date: Tue, 14 Oct 2025 19:58:24 +0530 Subject: [PATCH] drm/xe/uapi: Add documentation for DRM_XE_GEM_CREATE_FLAG_SCANOUT Add documentation for drm_xe_gem_create structure flag DRM_XE_GEM_CREATE_FLAG_SCANOUT. Signed-off-by: Sanjay Yadav Reviewed-by: Matthew Auld Signed-off-by: Matthew Auld Link: https://lore.kernel.org/r/20251014142823.3701228-2-sanjay.kumar.yadav@intel.com --- include/uapi/drm/xe_drm.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/include/uapi/drm/xe_drm.h b/include/uapi/drm/xe_drm.h index 40ff19f52a8d5..2d7945cda7396 100644 --- a/include/uapi/drm/xe_drm.h +++ b/include/uapi/drm/xe_drm.h @@ -771,7 +771,11 @@ struct drm_xe_device_query { * until the object is either bound to a virtual memory region via * VM_BIND or accessed by the CPU. As a result, no backing memory is * reserved at the time of GEM object creation. - * - %DRM_XE_GEM_CREATE_FLAG_SCANOUT + * - %DRM_XE_GEM_CREATE_FLAG_SCANOUT - Indicates that the GEM object is + * intended for scanout via the display engine. When set, kernel ensures + * that the allocation is placed in a memory region compatible with the + * display engine requirements. This may impose restrictions on tiling, + * alignment, and memory placement to guarantee proper display functionality. * - %DRM_XE_GEM_CREATE_FLAG_NEEDS_VISIBLE_VRAM - When using VRAM as a * possible placement, ensure that the corresponding VRAM allocation * will always use the CPU accessible part of VRAM. This is important -- 2.47.3