On Thu, 9 Nov 2017 19:35:14 +0100 Gerd Hoffmann <kra...@redhat.com> wrote:
> Hi, > > > struct vfio_device_gfx_plane_info lacks the head field we've been > > discussing. Thanks, > > Adding multihead support turned out to not be that easy. There are > corner cases like a single framebuffer spawning both heads. Also it > would be useful to somehow hint to the guest which heads it should use. > > In short: Proper multihead support is more complex than just adding a > head field for later use. So in a short private discussion with Tina we > came to the conclusion that it will be better add multihead support to > the API when the first driver wants use it, so we can actually test the > interface and make sure we didn't miss anything. Adding a incomplete > multihead API now doesn't help anybody. Do you think we can enable multi-head and preserve backwards compatibility within this API proposed here? Thanks, Alex
