"Eugene M. Kim" wrote: > > Thank you for the reply. > > I also found contigmalloc() shortly after I posted the original question > (what an embarrassment ;-p), then met another restriction: Because these > memory regions are to be accessed by a userland process (X server), they > have to be somehow mapped into the user space. So far it seems I would > have to do something similar to vm_mmap(), but I'm not sure if this is a > right direction. Do you have any suggestions?
Write a device driver, and mmap() the device after opening it. Alternately, consider doing the machdep.c trick, and setting the PG_U bit. One bad consequence of this, however, is that any runaway user process would be able to trash the memory, so a device mmap() approach is really a much better idea. -- Terry To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
