On Thursday, March 2nd, 2023 at 09:07, Thomas Zimmermann <tzimmermann@xxxxxxx> wrote: > Am 01.03.23 um 23:29 schrieb Simon Ser: > > > We don't populate gem_prime_import_sg_table so only DMA-BUFs > > exported from our own device can be imported. Still, this is useful > > to user-space. > > VRAM helpers don't really offer much flexibility or control in where to > place a BO. That's fine. The goal here is purely export/import to the exact same device. > What happens if the BO is located in device video ram and cannot be > used by the other participant? A blank screen? A failure at import-time should happen. But maybe this patch isn't enough to make this happen?