On Mon, 19 Jun 2017 08:38:32 +0200 Gerd Hoffmann <kraxel@xxxxxxxxxx> wrote: > Hi, > > > My suggestion was to use vfio device fd for this ioctl and have > > dmabuf > > mgr fd as member in above query_plane structure, for region type it > > would be set to 0. > > Region type should be DRM_PLANE_TYPE_PRIMARY > > > Can't mmap that page to get surface information. There is no way to > > synchronize between QEMU reading this mmapped region and vendor > > driver > > writing it. There could be race condition in these two operations. > > Read > > on this page should be trapped and blocking, so that surface in that > > region is only updated when its asked for. > > Does it make sense to have a "generation" field in the plane_info > struct (which gets increased each time the struct changes) ? It seems less cumbersome than checking each field to see if it has changed. Thanks, Alex _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
