From: "Greg Griffes" <ggg@ieee.org>
To: <linuxppc-embedded@lists.linuxppc.org>
Subject: Re: Linux 2.4.17 bug, mmap of /dev/mem
Date: Mon, 25 Feb 2002 19:57:15 -0500 [thread overview]
Message-ID: <005801c1be60$88bcd8a0$6401a8c0@attbi.com> (raw)
In-Reply-To: 200202252229.g1PMTdQ02395@xdr.com
(snip)
> The crucial thing is mmap some region of io space
> read from a page write to the same page
> Repeat and rinse, something will corrupt the system.
>
> reads alone are ok.
> writes alone are ok.
> write followed by any combination of reads or writes is ok
> read followed by write = trouble
I am an embedded PPC Linux novice, so, tell me if I'm way off base.
This sounds like a pipeline problem; out of order I/O execution.
Could there be an "eieio" missing somewhere?
Greg Griffes
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2002-02-26 0:57 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-25 22:29 Linux 2.4.17 bug, mmap of /dev/mem David Ashley
2002-02-25 22:41 ` Wolfgang Denk
2002-02-26 0:57 ` Greg Griffes [this message]
2002-02-26 1:34 ` Dan Malek
-- strict thread matches above, loose matches on Subject: below --
2002-02-27 21:48 David Ashley
2002-02-27 22:05 ` Wolfgang Grandegger
2002-02-27 21:36 David Ashley
2002-02-27 21:04 David Ashley
2002-02-27 21:06 ` Dan Malek
2002-02-26 20:17 David Ashley
2002-02-26 16:00 David Ashley
2002-02-26 3:15 David Ashley
2002-02-26 3:50 ` Dan Malek
2002-02-26 14:43 ` John W. Linville
2002-02-26 15:18 ` Wolfgang Denk
2002-02-26 17:06 ` Dan Malek
2002-02-26 0:36 David Ashley
2002-02-26 0:18 David Ashley
2002-02-26 0:06 David Ashley
2002-02-25 23:43 David Ashley
[not found] <3C7AC345.301@embeddededge.com>
2002-02-25 23:26 ` Wolfgang Denk
2002-02-25 20:27 David Ashley
2002-02-25 20:54 ` Dan Malek
2002-02-25 21:06 ` Dan Malek
2002-02-25 22:36 ` Wolfgang Denk
2002-02-25 18:16 David Ashley
2002-02-25 18:51 ` Dan Malek
2002-02-20 15:54 David Ashley
2002-02-15 7:17 Goddeeris Frederic
2002-02-14 17:06 David Ashley
2002-02-14 9:22 Goddeeris Frederic
2002-02-12 0:36 David Ashley
2002-02-08 16:07 David Ashley
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='005801c1be60$88bcd8a0$6401a8c0@attbi.com' \
--to=ggg@ieee.org \
--cc=linuxppc-embedded@lists.linuxppc.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).