All of lore.kernel.org
 help / color / mirror / Atom feed
From: Greg KH <gregkh@suse.de>
To: Jesper Juhl <jesper.juhl@gmail.com>
Cc: "Valdis.Kletnieks@vt.edu" <Valdis.Kletnieks@vt.edu>,
	linux-kernel@vger.kernel.org, "Hans J. Koch" <hjk@linutronix.de>
Subject: Re: [PATCH 2/3] UIO: Documentation
Date: Thu, 9 Aug 2007 00:19:32 -0700	[thread overview]
Message-ID: <20070809071932.GA22318@suse.de> (raw)
In-Reply-To: <9a8748490708081603k65746311sad595947fd5ab971@mail.gmail.com>

On Thu, Aug 09, 2007 at 01:03:39AM +0200, Jesper Juhl wrote:
> >
> I think the only way to avoid it is to not provide something like UIO.

Problem is, things like UIO provide a real solution for a wide range of
different types of devices.  Like the one provided in the kernel right
now, and a bunch of others that I am currently discussing with different
manufacturers (think high-speed DSPs that just want to give userspace
direct access to the card and have the kernel get the hell out of the
way so data can be read and processed as fast as possible.)

And also realize that some types of systems have been doing this very
same kind of kernel/userspace interface for many years, namely X :)

As for the legalities of using closed source userspace code with the UIO
interface, consult a lawyer if you have questions, and be sure to bring
up Alan's comments about derivative works :)

thanks,

greg k-h

  reply	other threads:[~2007-08-09  7:54 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-07-18 23:23 [GIT PATCH] UIO patches for 2.6.22 Greg KH
2007-07-18 23:26 ` [PATCH 1/3] UIO: Add the User IO core code Greg Kroah-Hartman
2007-07-18 23:26   ` [PATCH 2/3] UIO: Documentation Greg Kroah-Hartman
2007-07-18 23:26     ` [PATCH 3/3] UIO: Hilscher CIF card driver Greg Kroah-Hartman
2007-07-19 16:33       ` Jan Engelhardt
2007-07-19 19:28         ` Hans-Jürgen Koch
2007-07-19 20:02           ` Jan Engelhardt
2007-07-19 20:24             ` Hans-Jürgen Koch
2007-08-08 21:36     ` [PATCH 2/3] UIO: Documentation Jesper Juhl
2007-08-08 22:12       ` Valdis.Kletnieks
2007-08-08 23:03         ` Jesper Juhl
2007-08-09  7:19           ` Greg KH [this message]
2007-08-09 16:50             ` Jesper Juhl
2007-08-08 23:40         ` Alan Cox
2007-08-09 12:29           ` Hans-Jürgen Koch
2007-08-09 14:09             ` Alan Cox
2007-08-09 13:02         ` Hans-Jürgen Koch
2007-08-09 14:12           ` Alan Cox
2007-08-09 15:23             ` Hans-Jürgen Koch
2007-08-09  7:41       ` Hans-Jürgen Koch
  -- strict thread matches above, loose matches on Subject: below --
2007-05-08 14:04 [GIT PATCH] UIO patches for 2.6.21 Greg KH
2007-05-08 14:08 ` [PATCH 1/3] UIO: Add the User IO core code Greg Kroah-Hartman
2007-05-08 14:08   ` [PATCH 2/3] UIO: Documentation Greg Kroah-Hartman
2007-04-27 22:49 [GIT PATCH] UIO patches for 2.6.21 Greg KH
2007-04-27 22:50 ` [PATCH 1/3] UIO: Add the User IO core code Greg Kroah-Hartman
2007-04-27 22:50   ` [PATCH 2/3] UIO: Documentation Greg Kroah-Hartman
2007-05-01 23:42     ` Randy Dunlap
2007-05-02  8:41       ` Hans-Jürgen Koch
2007-05-02 20:52         ` Randy Dunlap
2007-05-02 22:00           ` Hans-Jürgen Koch
2007-05-02 23:37             ` Randy Dunlap
2007-05-03  5:37               ` Greg KH
2007-05-03  6:39                 ` Hans-Jürgen Koch
2007-05-04  9:37                   ` Hans-Jürgen Koch
2007-05-07 17:46                     ` Randy Dunlap
2007-05-07 20:01                       ` Hans-Jürgen Koch

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20070809071932.GA22318@suse.de \
    --to=gregkh@suse.de \
    --cc=Valdis.Kletnieks@vt.edu \
    --cc=hjk@linutronix.de \
    --cc=jesper.juhl@gmail.com \
    --cc=linux-kernel@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.