From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Michael Thalmeier <michael@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] mprotect in Xenomai
Date: Mon, 20 Jun 2011 16:57:50 +0200 [thread overview]
Message-ID: <4DFF5FEE.8060901@domain.hid> (raw)
In-Reply-To: <f801f3950e5f79192ebc8824bfd54545@domain.hid>
On 06/20/2011 04:14 PM, Michael Thalmeier wrote:
> Hello !
>
> We have a xenomai application that uses mprotect to change write
> protection in order to set and clear breakpoint codes.
> This works quite well (the code invoking mprotect switches to linux,
> but thats ok).
> The problem is that from time to time the realtime task executing code
> in the area changed with mprotect also switches domains to handle a page
> fault.
> Is there some functionality in xenomai to change memory protection not
> using mprotect ?
> Attached you find a short sample that can reproduce this problem.
I am afraid this is platform dependent, on what architecture do you get
this behaviour?
--
Gilles.
next prev parent reply other threads:[~2011-06-20 14:57 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-20 14:14 [Xenomai-help] mprotect in Xenomai Michael Thalmeier
2011-06-20 14:57 ` Gilles Chanteperdrix [this message]
2011-06-20 15:29 ` Johann Obermayr
2011-06-21 9:08 ` Michael Thalmeier
2011-06-21 10:41 ` Gilles Chanteperdrix
2011-06-21 22:17 ` Gilles Chanteperdrix
2011-06-22 7:08 ` Michael Thalmeier
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