From: Daniel Phillips <phillips@arcor.de>
To: Jesse Barnes <jbarnes@sgi.com>,
"Richard B. Johnson" <root@chaos.analogic.com>
Cc: Imran Badr <imran.badr@cavium.com>,
"'David S. Miller'" <davem@redhat.com>,
linux-kernel@vger.kernel.org
Subject: Re: Calculating kernel logical address ..
Date: Mon, 9 Sep 2002 20:25:56 +0200 [thread overview]
Message-ID: <E17oTES-0006qj-00@starship> (raw)
In-Reply-To: <20020909181355.GA1510567@sgi.com>
On Monday 09 September 2002 20:13, Jesse Barnes wrote:
> On Mon, Sep 09, 2002 at 02:00:35PM -0400, Richard B. Johnson wrote:
> > Well I just read Documentation/DMA-mapping.txt as advised by David
> > and it seems as though it will no longer be possible to do what
> > many programmers have been wanting to do, to wit:
> >
> > (1) In user-code, allocate a buffer.
> > (2) Lock that buffer into memory.
> > (3) Call some driver that DMAs data to/from that buffer.
>
> It looks drivers/media/video/video-buf.c uses alloc_kiovec() and
> map_user_kiobuf() to do it. And I think Ben LaHaise was talking about
> removing these functions and creating some other, lightweight
> interface for the same purpose?
Hopefully. My understanding is that kio is obsoleted by bio and aio,
anyone want to confirm/deny this?
--
Daniel
next prev parent reply other threads:[~2002-09-09 18:39 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-09 17:06 Imran Badr
2002-09-09 17:29 ` Richard B. Johnson
2002-09-09 17:23 ` David S. Miller
2002-09-09 17:34 ` Martin J. Bligh
2002-09-09 17:40 ` Daniel Phillips
2002-09-09 17:31 ` Imran Badr
2002-09-09 18:00 ` Richard B. Johnson
2002-09-09 18:12 ` Imran Badr
2002-09-09 18:27 ` Daniel Phillips
2002-09-09 18:41 ` Imran Badr
2002-09-09 21:55 ` Alan Cox
2002-09-09 22:52 ` Imran Badr
2002-09-09 23:09 ` Alan Cox
2002-09-09 18:13 ` Jesse Barnes
2002-09-09 18:25 ` Daniel Phillips [this message]
2002-09-09 19:40 ` Andrew Morton
2002-09-09 20:41 ` Daniel Phillips
2002-09-10 6:43 ` Jens Axboe
2002-09-10 7:12 ` Andrew Morton
2002-09-09 18:42 ` Andrew Morton
2002-09-10 7:03 ` Gerd Knorr
2002-09-09 18:16 ` Kurt Ferreira
2002-09-09 18:17 ` David S. Miller
2002-09-09 18:17 ` Daniel Phillips
2002-09-09 18:43 ` Richard B. Johnson
2002-09-09 18:50 ` Daniel Phillips
2002-09-09 18:57 ` Richard B. Johnson
2002-09-09 18:08 ` Andrew Morton
2002-09-09 18:23 ` Daniel Phillips
2002-09-09 18:49 ` Imran Badr
2002-09-09 18:46 ` David S. Miller
2002-09-09 19:06 ` Daniel Phillips
2002-09-09 19:14 ` Andrew Morton
2002-09-09 19:23 ` Imran Badr
-- strict thread matches above, loose matches on Subject: below --
2002-09-09 21:19 Manfred Spraul
2002-09-09 21:47 ` Andrew Morton
2002-09-10 17:01 ` Manfred Spraul
2002-09-09 21:02 Manfred Spraul
2002-09-09 21:07 ` Imran Badr
2002-09-06 15:44 Manfred Spraul
2002-09-06 17:13 ` Imran Badr
2002-09-07 1:57 ` Daniel Phillips
2002-09-06 3:23 side-by-side Re: BYTE Unix Benchmarks Version 3.6 Daniel Phillips
2002-09-06 3:34 ` Calculating kernel logical address Imran Badr
2002-09-07 1:44 ` Daniel Phillips
2002-09-08 0:01 ` David S. Miller
2002-09-08 18:44 ` Daniel Phillips
2002-09-09 5:00 ` David S. Miller
2002-09-09 5:17 ` Daniel Phillips
2002-09-09 5:28 ` David S. Miller
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