From: Gabriel C <nix.or.die@googlemail.com>
To: Oliver Joa <oliver@j-o-a.de>
Cc: linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org
Subject: Re: How to Switch DMA off for only one Harddisk at Kernelboot
Date: Sun, 16 Dec 2007 21:31:17 +0100 [thread overview]
Message-ID: <47658B15.5090600@googlemail.com> (raw)
In-Reply-To: <47658235.7050409@j-o-a.de>
Oliver Joa wrote:
> Hi,
>
> Gabriel C wrote:
>
> [...]
>
>>>> Also have a look at Documentation/ide.txt.
>>> I read this already. Searching for "nodma" in this document gives only
>>> one line:
>>>
>>> "ide=nodma" : disable DMA globally for the IDE subsystem.
>>>
>>> If the documentation is correct hda=nodma and ideX=nodma should not
>>> work. I use kernel 2.6.23.1 at the moment.
>> grep nodma Documentation/ide.txt
>> "hdx=nodma" : disallow DMA
>>
>> ide=foo_option is for the whole ide sub-system where ideX|hdX=foo_option is just for that HDD.
>
>
> /usr/src/linux-2.6.23.1$ grep nodma Documentation/ide.txt
> "ide=nodma" : disable DMA globally for the IDE subsystem.
>
> /usr/src/linux-2.6.21.5$ grep nodma Documentation/ide.txt
> "ide=nodma" : disable DMA globally for the IDE subsystem.
>
> /usr/src/linux-2.6.12# grep nodma Documentation/ide.txt
> "ide=nodma" : disable DMA globally for the IDE subsystem.
>
> Sorry, but I can not find this option, and it does not work. Which
> kernel do you use?
This is my devel box , running 2.6.24-rc5-git
>
> Thanks
>
> Olli
>
Gabriel
next prev parent reply other threads:[~2007-12-16 20:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4765690C.6010605@j-o-a.de>
[not found] ` <47657BA8.3020004@googlemail.com>
[not found] ` <47657D79.7090100@j-o-a.de>
2007-12-16 19:45 ` How to Switch DMA off for only one Harddisk at Kernelboot Gabriel C
2007-12-16 19:53 ` Oliver Joa
2007-12-16 20:31 ` Gabriel C [this message]
2007-12-29 11:50 ` Konstantin A. Lepikhov
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=47658B15.5090600@googlemail.com \
--to=nix.or.die@googlemail.com \
--cc=linux-ide@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=oliver@j-o-a.de \
/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).