From: Jeff Garzik <jgarzik@mandrakesoft.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Linux Kernel List <linux-kernel@vger.rutgers.edu>, linux-mm@kvack.org
Subject: Re: Getting big areas of memory, in 2.3.x?
Date: Wed, 08 Dec 1999 21:45:14 -0500 [thread overview]
Message-ID: <384F17BA.174B4C6D@mandrakesoft.com> (raw)
In-Reply-To: <E11vtJW-0001YP-00@the-village.bc.nu>
Alan Cox wrote:
>
> > What's the best way to get a large region of DMA'able memory for use
> > with framegrabbers and other greedy drivers?
>
> Do you need physically linear memory >
Yes. For the Meteor-II grabber I don't think so, but it looks like the
older (but mostly compatible) Corona needs it.
> > Per a thread on glx-dev, Andi Kleen mentions that the new 2.3.x MM stuff
> > still doesn't allieviate the need for bigphysarea and similar patches.
>
> It helps, however the best answer is to use sane hardware which has scatter
> gather - eg the bttv frame grabbers grab 1Mb of memory or more, but they
> grab it as arbitary pages not a linear block.
That's the easy answer too :)
--
Jeff Garzik | Just once, I wish we would encounter
Building 1024 | an alien menace that wasn't immune to
MandrakeSoft, Inc. | bullets. -- The Brigadier, "Dr. Who"
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://humbolt.geo.uu.nl/Linux-MM/
next prev parent reply other threads:[~1999-12-09 2:45 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-12-09 1:03 Jeff Garzik
1999-12-09 2:28 ` Alan Cox
1999-12-09 2:45 ` Jeff Garzik [this message]
1999-12-09 5:22 ` Oliver Xymoron
1999-12-09 12:25 ` Ingo Molnar
1999-12-09 20:24 ` Jeff Garzik
1999-12-09 20:31 ` Kanoj Sarcar
1999-12-09 20:39 ` Rik van Riel
1999-12-09 20:54 ` Kanoj Sarcar
1999-12-09 23:21 ` Ingo Molnar
1999-12-09 22:27 ` Kanoj Sarcar
1999-12-09 23:16 ` Ingo Molnar
1999-12-09 23:09 ` Benjamin C.R. LaHaise
1999-12-10 0:44 ` Ingo Molnar
1999-12-10 0:18 ` William J. Earl
1999-12-11 19:56 ` Stephen C. Tweedie
1999-12-10 12:21 ` Rik van Riel
1999-12-10 13:42 ` Ingo Molnar
1999-12-10 18:04 ` William J. Earl
1999-12-09 20:50 ` William J. Earl
1999-12-09 23:15 ` Ingo Molnar
1999-12-09 22:13 ` William J. Earl
1999-12-09 22:26 ` Alan Cox
1999-12-09 23:42 ` William J. Earl
1999-12-09 23:50 ` Alan Cox
1999-12-10 0:30 ` William J. Earl
1999-12-10 0:37 ` Alan Cox
1999-12-10 4:19 ` Oliver Xymoron
1999-12-10 10:14 ` Thomas Sailer
1999-12-09 23:24 ` Ingo Molnar
1999-12-09 22:33 ` Jeff Garzik
1999-12-09 23:32 ` Rogier Wolff
1999-12-09 23:44 ` JF Martinez
1999-12-10 0:52 ` Ingo Molnar
1999-12-09 23:46 ` Andi Kleen
1999-12-10 13:52 ` Stephen C. Tweedie
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=384F17BA.174B4C6D@mandrakesoft.com \
--to=jgarzik@mandrakesoft.com \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=linux-kernel@vger.rutgers.edu \
--cc=linux-mm@kvack.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox