> If your kernel module creates a device in /dev that implements the > mmap method, then you don't need to worry about mucking around with > vm_maps and objects and whatnot. Your mmap method just needs to be > able to convert offsets into the device into physical memory > addresses,
Yes I'm aware of this facility, thank you. > and the vm infrastructure will do the rest for you. Since this mapping is on the main path of the driver, I'm worried that the overhead on each access of a page fault and a function call (the pager associated with a cdev mmap) is too much to bear. So I'd like to do it the "hard" way which I feel is the most optimized. Thanks! _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
