Hi Hans, > That should be new enough, I see no important differences between 3.4 > and 3.14 in this respect. But really, 3.4? We are moving to 3.10 shortly. > Question: if you use MEMORY_MMAP instead of USERPTR, does that work? Unfortunately, this activity is pending (need to get it pushed in plan). I need to port driver and app to do that. > Have you tried to stream with v4l2-ctl? It's available here: No, need to see. Read a bit about vm_map_ram(), it gives a kernel vaddr for user pages in which the user vaddr are residing. Can the virtually indexed D-cache be an issue here, or am I too paranoid? I just checked on some webpage probably arm center, that D-caches are physically tagged, so, the above could be ruled out. What about the architectures? I will look into the driver more thoroughly, because, for kernel.org code, I am least skeptical. Regards, Divneil -- 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
