Linux MIPS Architecture development
 help / color / mirror / Atom feed
From: Jorgen Lundman <lundman@lundman.net>
To: linux-mips@linux-mips.org
Subject: MIPS 4KEc with 2.6.15
Date: Mon, 07 Jan 2008 09:39:29 +0900	[thread overview]
Message-ID: <478174C1.2090708@lundman.net> (raw)


Hello list,

I have an embedded device running 2.6.15 kernel on a MIPS 4KEc 300MHz 
CPU. It was configured for Sigma's tango2 board, which I know nothing 
about, so I picked a mips-board by random, "atlas", and found I can 
produce working kernel module compiles.

However, when I compiled FUSE kernel module, it behaves erratically in a 
way making the FUSE developer think I may have come across the cache 
coherency bug in arm and mips, fixed sometime around 2.6.17.

Since I can not change the kernel that is running, I was looking for 
alternate solutions. FUSE itself has a work around, that calls 
flush_cache_page(), but I found that mips-board atlas does not have this 
defined:

fuse: Unknown symbol flush_cache_page

Should I try other mips-boards that may have this function call defined? 
Do I have other ways to avoid the cache coherence bug?

The /proc/ksyms is gone, so I do not think I am able to check what 
symbols their kernel has.

Lund


-- 
Jorgen Lundman       | <lundman@lundman.net>
Unix Administrator   | +81 (0)3 -5456-2687 ext 1017 (work)
Shibuya-ku, Tokyo    | +81 (0)90-5578-8500          (cell)
Japan                | +81 (0)3 -3375-1767          (home)

             reply	other threads:[~2008-01-07  0:39 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-07  0:39 Jorgen Lundman [this message]
2008-01-07 12:08 ` MIPS 4KEc with 2.6.15 Ralf Baechle
2008-01-07 13:25   ` Jorgen Lundman
2008-01-07 15:52 ` David Daney
2008-01-08 22:02   ` Mark Lin
2008-01-08 23:00     ` Jorgen Lundman
2008-01-09 21:29       ` David Daney
2008-01-10  4:06         ` Jorgen Lundman
2008-01-10 16:36           ` Martin Michlmayr

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=478174C1.2090708@lundman.net \
    --to=lundman@lundman.net \
    --cc=linux-mips@linux-mips.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