Re: svgalib I/O permission

[Roland McGrath <roland@frob.com>]

> > 	err = i386_io_port_add (mach_thread_self (), kd_device);
> 
> This gave me "(os/kern) invalid argument" when called from the
> thread hook of ports_manage_port_operations_multithread.  I then
> removed the call, but the program could still write to the ports.
> So maybe it's automatic after all.

Hmm, it shouldn't be.  It would be good if someone could look into this
(maybe you can get a test case together and file a BTS report?), but I'm
not going to worry about it for now.