Op 29-03-17 om 02:27 schreef raof@ubuntu.com:
From: Christopher James Halse Rogers christopher.halse.rogers@canonical.com
Any use of the framebuffer will migrate it to VRAM, which is not sensible for an imported dma-buf.
Signed-off-by: Christopher James Halse Rogers christopher.halse.rogers@canonical.com CC: nouveau@lists.freedesktop.org
drivers/gpu/drm/nouveau/nouveau_display.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c index 72fdba1a1c5d..e8e6bc7b6d51 100644 --- a/drivers/gpu/drm/nouveau/nouveau_display.c +++ b/drivers/gpu/drm/nouveau/nouveau_display.c @@ -286,6 +286,10 @@ nouveau_user_framebuffer_create(struct drm_device *dev, return ERR_PTR(-ENOENT); nvbo = nouveau_gem_object(gem);
- /* Handle is an imported dma-buf, so cannot be migrated to VRAM */
- if (gem->import_attach)
return ERR_PTR(-EINVAL);- ret = nouveau_framebuffer_new(dev, mode_cmd, nvbo, &fb); if (ret == 0) return &fb->base;
I don't know if there's really a hard requirement for nouveau to scan out from GART on nv50+, but it might be a bigger problem on earlier platforms.
Acked-by: Maarten Lankhorst maarten.lankhorst@linux.intel.com