> > Third would be having a firewall in 2D driver checking the stream and > ensuring all registers that accept addresses are written by values > derived from dmabufs. I haven't tried implementing this, but it'd > involve a lookup table in kernel and CPU reading through the command > stream. Offsets and sizes would also need to be validated. There would > be a performance hit.
This is the standard mechanism, and what exynos does as well. The per process VM method is also used as an extension to this on some hw. Dave. _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/dri-devel
