lkml.org 
[lkml]   [2003]   [Jan]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectUser mode drivers (Honest does not pay here ...)
> I may be showing my ignorance here (won't be the first time) but this makes
> me wonder if Linux could provide a way to do "user level drivers".

It is a question often asked in comp.os.linux.development.system.
If performance penalties and security problems are no obstacle,
a lot of hardware can be serviced with a user mode driver, except
one that requires interrupts to operate. There is no way to deliver
an interrupt safely to the user mode, because a device specific
deactivation or ack-ing must be performed before interrupts are
enabled (on i386 at least). Other problems can be worked around
with ioperm and friends.

-- Pete
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:32    [W:0.049 / U:0.008 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site