On systems with media GT, extra latency is added when accessing stolen memory when the GT is in MC6. Since we additionally aren't counting how much memory is used for stolen and we could in theory fill up the entire stolen area with DPT's, avoid using stolen and only use the default memory region.
Additionally, this may also result in random system hangs under load. Link: https://gitlab.freedesktop.org/drm/xe/kernel/-/work_items/7513 Signed-off-by: Maarten Lankhorst <[email protected]> --- drivers/gpu/drm/xe/display/xe_fb_pin.c | 33 +++++++------------------- 1 file changed, 8 insertions(+), 25 deletions(-) diff --git a/drivers/gpu/drm/xe/display/xe_fb_pin.c b/drivers/gpu/drm/xe/display/xe_fb_pin.c index 5f4a0cd8deca0..73469ea5f333d 100644 --- a/drivers/gpu/drm/xe/display/xe_fb_pin.c +++ b/drivers/gpu/drm/xe/display/xe_fb_pin.c @@ -164,31 +164,14 @@ static int __xe_pin_fb_vma_dpt(struct drm_gem_object *obj, dpt_size = ALIGN(intel_rotation_info_size(&view->rotated) * 8, XE_PAGE_SIZE); - if (IS_DGFX(xe)) - dpt = xe_bo_create_pin_map_at_novm(xe, tile0, - dpt_size, ~0ull, - ttm_bo_type_kernel, - XE_BO_FLAG_VRAM0 | - XE_BO_FLAG_GGTT | - XE_BO_FLAG_PAGETABLE, - pin_params->alignment, false); - else - dpt = xe_bo_create_pin_map_at_novm(xe, tile0, - dpt_size, ~0ull, - ttm_bo_type_kernel, - XE_BO_FLAG_STOLEN | - XE_BO_FLAG_GGTT | - XE_BO_FLAG_PAGETABLE, - pin_params->alignment, false); - if (IS_ERR(dpt)) - dpt = xe_bo_create_pin_map_at_novm(xe, tile0, - dpt_size, ~0ull, - ttm_bo_type_kernel, - XE_BO_FLAG_SYSTEM | - XE_BO_FLAG_GGTT | - XE_BO_FLAG_PAGETABLE | - XE_BO_FLAG_FORCE_WC, - pin_params->alignment, false); + dpt = xe_bo_create_pin_map_at_novm(xe, tile0, + dpt_size, ~0ull, + ttm_bo_type_kernel, + XE_BO_FLAG_VRAM_IF_DGFX(tile0) | + XE_BO_FLAG_GGTT | + XE_BO_FLAG_PAGETABLE | + XE_BO_FLAG_FORCE_WC, + pin_params->alignment, false); if (IS_ERR(dpt)) return PTR_ERR(dpt); -- 2.53.0
