struct page for a non-physical-memory address

mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed

From: yipee <yipeeyipeeyipeeyipee@yahoo.com>
To: linux-kernel@vger.kernel.org
Subject: struct page for a non-physical-memory address
Date: Wed, 30 Aug 2006 13:51:21 +0000 (UTC)	[thread overview]
Message-ID: <loom.20060830T151949-979@post.gmane.org> (raw)

Hi,

I want to let a nopage mmap handler return a 'struct page' that
refers to a non-physical-memory address (e.g. some device memory).
pfn_valid(x) fails for this address (returning 0) so
pfn_to_page(x) can't be used.
How can I implement this functionality? Must the VM_IO bit be set?
Are there several methods to implement this?

thanks,
y

                 reply	other threads:[~2006-08-30 13:52 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

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=loom.20060830T151949-979@post.gmane.org \
    --to=yipeeyipeeyipeeyipee@yahoo.com \
    --cc=linux-kernel@vger.kernel.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

all inboxes | Powered by JetHome®