From: Alessandro Rubini <rubini@gnudd.com>
To: misbah_khan@engineer.com
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: how to allocate 9MB of memory in kernel ?
Date: Wed, 23 Jul 2008 14:47:45 +0200 [thread overview]
Message-ID: <20080723124745.GA20156@mail.gnudd.com> (raw)
In-Reply-To: <18605418.post@talk.nabble.com>
> If i allocate 9BM using vmalloc and remap to user space how should it
> address to the 9MB
> SDRAM contigues address which i need to map for user access ?
Use the nopage method and vmalloc_to_page in it.
I have an example in ftp://gnudd.com/pub/samplecode, in the
smallsample26 package, the module is "smallmmap.c" (I'm sure there are
simlilar examples elsewhere).
/alessandro
next prev parent reply other threads:[~2008-07-23 12:59 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-17 7:26 how to allocate 9MB of memory in kernel ? Misbah khan
2008-07-17 7:51 ` Marco Stornelli
2008-07-17 8:34 ` Misbah khan
2008-07-17 9:04 ` Marco Stornelli
2008-07-17 7:56 ` Arnd Bergmann
2008-07-17 8:19 ` Misbah khan
2008-07-17 8:24 ` Arnd Bergmann
2008-07-18 4:44 ` Misbah khan
2008-07-18 6:50 ` Marco Stornelli
2008-07-18 8:48 ` Misbah khan
2008-07-18 14:57 ` Timur Tabi
2008-07-18 15:39 ` Arnd Bergmann
2008-07-22 5:23 ` Misbah khan
2008-07-22 6:43 ` Marco Stornelli
2008-07-22 9:31 ` Arnd Bergmann
2008-07-22 9:47 ` Marco Stornelli
2008-07-22 13:22 ` Misbah khan
2008-07-22 15:12 ` Arnd Bergmann
2008-07-23 7:30 ` Misbah khan
2008-07-24 8:33 ` Misbah khan
2008-07-24 9:31 ` Arnd Bergmann
2008-07-25 8:43 ` Misbah khan
2008-07-25 8:50 ` Arnd Bergmann
2008-08-02 19:13 ` harihanv
2008-07-23 12:47 ` Alessandro Rubini [this message]
2008-07-17 8:02 ` Sylvain Joyeau
2008-07-17 8:41 ` Misbah khan
[not found] <mailman.2280.1216290829.2883.linuxppc-embedded@ozlabs.org>
2008-07-17 20:15 ` Siva Prasad
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=20080723124745.GA20156@mail.gnudd.com \
--to=rubini@gnudd.com \
--cc=linuxppc-embedded@ozlabs.org \
--cc=misbah_khan@engineer.com \
/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).