From: Thomas Lockhart <Thomas.Lockhart@domain.hid>
To: Wolfgang Denk <wd@domain.hid>
Cc: "xenomai@xenomai.org" <xenomai@xenomai.org>
Subject: Re: [Xenomai-help] Some problems with shared memory
Date: Mon, 04 May 2009 08:24:52 -0700 [thread overview]
Message-ID: <49FF08C4.40908@domain.hid> (raw)
In-Reply-To: <20090504072304.A7E2483420E8@domain.hid>
[-- Attachment #1: Type: text/plain, Size: 762 bytes --]
> >> 1.) If I don´t page align the size of shared memory (multiple of
> >> 4096)...
> The restrictions for page allignments affect the addr and offset
> paraemters only. To me it seems clear that mmap() in plain Linux and
> Xenomai behave differently.
Sorry for not having the start of the thread. I'm not sure if it is
helpful to note that when I implemented memory mapped "device drivers"
for our system I had to align the address and offset to the page size
before the call to mmap would succeed. That was with plain Linux and the
driver also works with Xenomai.
- Tom
--
Thomas Lockhart
Supervisor, Distributed and Real-time Group
Instrument Software and Science Data Systems
Caltech/JPL
[-- Attachment #2: Type: text/html, Size: 1272 bytes --]
next prev parent reply other threads:[~2009-05-04 15:24 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-30 9:31 [Xenomai-help] Some problems with shared memory roderik.wildenburg
2009-03-30 12:14 ` Gilles Chanteperdrix
2009-03-31 11:52 ` roderik.wildenburg
2009-04-06 8:47 ` roderik.wildenburg
2009-05-03 20:21 ` Gilles Chanteperdrix
2009-05-04 7:23 ` Wolfgang Denk
2009-05-04 8:49 ` Gilles Chanteperdrix
2009-05-04 15:24 ` Thomas Lockhart [this message]
2009-05-04 18:01 ` Wolfgang Denk
2009-05-04 18:33 ` Gilles Chanteperdrix
2009-05-05 12:16 ` roderik.wildenburg
2009-05-29 18:42 ` Gilles Chanteperdrix
2009-06-08 8:25 ` roderik.wildenburg
2009-06-08 20:36 ` Gilles Chanteperdrix
2009-06-09 6:30 ` roderik.wildenburg
2009-06-09 13:28 ` Philippe Gerum
2009-06-09 13:38 ` Philippe Gerum
2009-06-10 11:47 ` roderik.wildenburg
2009-06-12 14:06 ` Philippe Gerum
2009-06-16 13:20 ` roderik.wildenburg
2009-06-16 13:45 ` Philippe Gerum
2009-06-17 11:40 ` roderik.wildenburg
2009-06-17 14:19 ` Philippe Gerum
2009-06-18 8:37 ` roderik.wildenburg
2009-06-18 8:51 ` Philippe Gerum
2009-05-05 16:36 ` Thomas Lockhart
2009-05-05 19:03 ` Wolfgang Denk
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=49FF08C4.40908@domain.hid \
--to=thomas.lockhart@domain.hid \
--cc=wd@domain.hid \
--cc=xenomai@xenomai.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.