On Tue, Aug 18, 2020 at 09:57:59AM +0200, Christian König wrote: > Am 18.08.20 um 09:48 schrieb Gerd Hoffmann: > > Add max_segment argument to drm_prime_pages_to_sg(). When set pass it > > through to the __sg_alloc_table_from_pages() call, otherwise use > > SCATTERLIST_MAX_SEGMENT. > > > > Also add max_segment field to gem objects and pass it to > > drm_prime_pages_to_sg() calls in drivers and helpers. > > > > Signed-off-by: Gerd Hoffmann <kraxel@xxxxxxxxxx> > > I'm missing an explanation why this should be useful (it certainly is). virtio-gpu needs this to work properly with SEV (see patch 2/2 of this series). > And the maximum segment size seems misplaced in the GEM object. This is > usually a property of the device or even completely constant. Placing it in drm_device instead would indeed work for virtio-gpu, so I guess you are suggesting that instead? take care, Gerd
