From: Aaro Koskinen <aaro.koskinen@iki.fi>
To: linuxppc-dev@ozlabs.org
Subject: PPC64 & DMA zone
Date: Fri, 17 Aug 2012 23:04:06 +0300 [thread overview]
Message-ID: <20120817200406.GA1908@harshnoise.musicnaut.iki.fi> (raw)
Hi,
Is there a way to reduce/limit DMA zone with PPC64 kernel (3.6-rcX)
on G5 Mac? I have tried to search Kconfig or command line options,
but can't find anything.
The problem I have is that b43 driver (wireless chip) insists a 30-bit
DMA mask, but I have 1.5 GB physical memory. So the only way I can get
the wireless connection to work is to boot with "mem=1024MB". And as a
result my bloaty applications will loose much needed memory...
Thanks,
A.
next reply other threads:[~2012-08-17 20:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-17 20:04 Aaro Koskinen [this message]
2012-08-17 20:40 ` PPC64 & DMA zone Benjamin Herrenschmidt
2012-08-17 21:01 ` Aaro Koskinen
2012-08-17 21:38 ` Benjamin Herrenschmidt
2012-09-02 2:54 ` Tabi Timur-B04825
2012-09-02 3:12 ` Benjamin Herrenschmidt
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=20120817200406.GA1908@harshnoise.musicnaut.iki.fi \
--to=aaro.koskinen@iki.fi \
--cc=linuxppc-dev@ozlabs.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;
as well as URLs for NNTP newsgroup(s).