On Wed, Dec 7, 2016 at 11:42 AM, Robin Murphy <robin.murphy@xxxxxxx> wrote: > By comparison, the same use-cases (fbcon and fb-test) under the same > big-endian kernel do *not* show the same problem with nouveau driving a > PCIe 7600GT card, which led me to believe it was HDLCD-specific. Just to randomly insert info here... NV11+ cards have a "big endian" mode, where you can do 32-bit mmio from a big-endian cpu, and the card will auto-swap those. There are similar additional bits that make operating and accelerating off a big-endian CPU tolerable. Some care has gone into the kernel to make sure that all that stuff works. (One of those bits is that data gets byteswapped on upload to VRAM by virtue of being uploaded by sticking data into a pushbuf, as I recall.) -ilia _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
