On Wed, Nov 12, 2003 at 04:49:56PM +0000, David Laight wrote:
> Maybe the code could remember which process's i/o bitmap is in the TSS.
> Then it would only have to be copied when there was more than one such
> process.

That's a good idea. Usually there is only one such process.
Very few applications use the IO port bitmaps; things like the X server
just use i386_iopl(), which just enables all access.

- Frank

-- 
Frank van der Linden                                            fvdl@netbsd.org
===============================================================================
NetBSD. Free, Unix-like OS. > 45 different platforms.    http://www.netbsd.org/