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: Fri, 04 Jun 2010 10:55:09 +0200 [thread overview]
Message-ID: <4C08BF6D.1030806@domain.hid> (raw)
In-Reply-To: <B72938E0E9A84DE3A8F66E90AF8D3BE4@domain.hid>
Katsuhiko Isono wrote:
>> -----Original Message-----
>> 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?
>>
>
> Thank you for your reply.
>
> I use linux-2.6.26 of Freescale BSP because I develop custom board.
Actually, I do not really understand this argument. It looks as easy to
develop a custom board support with the mainline kernel as with a vendor
version. And at least, with the mainline kernel, you are not stuck with
whatever version the vendor chose.
--
Gilles.
next prev parent reply other threads:[~2010-06-04 8:55 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
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 [this message]
2010-06-07 5:54 ` Katsuhiko Isono
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