On Mon, May 06, 2013 at 10:35:35AM +1000, Dave Airlie wrote: > >> > >> However if we don't set a dma mask on the usb device, the mapping > >> ends up using swiotlb on machines that have it enabled, which > >> is less than desireable. > >> > >> Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx> > > > > Fyi for everyone else who was not on irc when Dave&I discussed this: > > This really shouldn't be required and I think the real issue is that > > udl creates a dma_buf attachement (which is needed for device dma > > only), but only really wants to do cpu access through vmap/kmap. So > > not attached the device should be good enough. Cc'ing a few more lists > > for better fyi ;-) > > Though I've looked at this a bit more, and since I want to be able to expose > shared objects as proper GEM objects from the import side I really > need that list of pages. Hm, what does "proper GEM object" mean in the context of udl? -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
