[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: userspace drivers
|
From: |
Marcus Brinkmann |
|
Subject: |
Re: userspace drivers |
|
Date: |
Fri, 31 Jan 2003 21:08:40 +0100 |
|
User-agent: |
Mutt/1.5.3i |
On Fri, Jan 31, 2003 at 04:36:35PM +0100, Robert Millan wrote:
> I've read the IO section and doesn't realy seem a useful interface. any plans
> to provide ioperm ()?
ioperm is supported in GNU Mach v2, that's what I implemented a year ago
(and I think it is in the GNU Mach manual, although I am not sure).
GNU Mach v1 pathetically doesn't restrict I/O access at all (we could easily
revert that to prevent all I/O access, though).
The question of user interrupt handlers: There is an interface, but I don't
think it was ever tried in GNU Mach, so I don't know if that works or can be
resurrected. In any case user space drivers are only interesting in a more
modern microkernel like L4.
Thanks,
Marcus
--
`Rhubarb is no Egyptian god.' GNU http://www.gnu.org marcus@gnu.org
Marcus Brinkmann The Hurd http://www.gnu.org/software/hurd/
Marcus.Brinkmann@ruhr-uni-bochum.de
http://www.marcus-brinkmann.de/