From: Timur Tabi <ttabi@interactivesi.com>
To: Mark_H_Johnson@Raytheon.com
Cc: linux-mm@kvack.org
Subject: Re: Physical address of a user virtual address
Date: Tue, 30 Oct 2001 12:17:18 -0600 [thread overview]
Message-ID: <3BDEEEAE.3000505@interactivesi.com> (raw)
In-Reply-To: <OF59D35C34.54785967-ON86256AF5.0002C7E7@hou.us.ray.com>
Mark_H_Johnson@Raytheon.com wrote:
> We can't seem to find any "easy" way (e.g., call a function) that converts
> an address in the virtual address space of an application to the physical
> address. The book "Linux Device Drivers" basically tells us to walk the
> page tables. From that, we think we must create a driver or kernel module
> to get access to the proper variables and functions. That looks like a lot
> of work for something that sounds simple.
User apps are not supposed to be concerned with physical memory, so it doesn't
surprise me at all that you need to make a driver. Fortunately, writing a
driver isn't that difficult. I'd help you out, if I didn't already have a job
doing exactly what you're looking for!
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/
next prev parent reply other threads:[~2001-10-30 18:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-30 0:42 Mark_H_Johnson
2001-10-30 18:17 ` Timur Tabi [this message]
2001-11-01 14:08 ` 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=3BDEEEAE.3000505@interactivesi.com \
--to=ttabi@interactivesi.com \
--cc=Mark_H_Johnson@Raytheon.com \
--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