From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: k-isono@domain.hid
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] "arm: fix mm switching" patch effective also for 2.4.10 ?
Date: Thu, 03 Jun 2010 11:19:13 +0200 [thread overview]
Message-ID: <4C077391.8000006@domain.hid> (raw)
In-Reply-To: <6D556AFBBAD7426CBD7EDECBA8A2A361@domain.hid>
Katsuhiko Isono wrote:
> I use linux-2.6.26 + xenomai-2.4.10 with custom arm(i.mx31) board.
>
> When realtime application was executed on my environment,
> application caused the SIGSEGV fault about once every several hours.
>
> However, when I applied "arm: fix mm switching" patch of xenomai-2.5 to
> my environment, SIGSEGV fault did not happen.
>
> There is a following question.
> - Is this patch effective also for 2.4.10 ?
> - What trouble is corrected with this patch ?
The version of the I-pipe patch you are using has another known bug than
the one fixed by the "arm: fix mm switching" patch (by the way, to be
sure that we are talking about the same patch, I would prefer an URL
pointing to xenomai's gitweb), the bug mentioned here:
https://mail.gna.org/public/xenomai-core/2009-08/msg00021.html
And the fix for this bug in the I-pipe patches which comes with Xenomai
2.4.10 should fix both bugs.
So, in short, do you oberve the segmentation faults when using the
I-pipe patches which ship with Xenomai 2.4.10 rather than whatever patch
you are using for linux 2.6.26?
--
Gilles.
next prev parent reply other threads:[~2010-06-03 9:19 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-02 23:31 [Xenomai-help] "arm: fix mm switching" patch effective also for 2.4.10 ? Katsuhiko Isono
2010-06-03 9:19 ` Gilles Chanteperdrix [this message]
2010-06-04 4:11 ` Katsuhiko Isono
2010-06-04 7:54 ` Philippe Gerum
2010-06-04 8:44 ` Gilles Chanteperdrix
2010-06-04 8:55 ` Gilles Chanteperdrix
2010-06-07 5:54 ` Katsuhiko Isono
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