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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.