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From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Arnaud Degroote <arnaud.degroote@isae.fr>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai] Support of Beagleboard xm rev C on 3.14-ipipe
Date: Thu, 03 Jul 2014 14:34:50 +0200	[thread overview]
Message-ID: <53B54DEA.9020306@xenomai.org> (raw)
In-Reply-To: <20140703083807.GA10654@dmia-degroote.isae.fr>

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On 07/03/2014 10:38 AM, Arnaud Degroote wrote:
> On 02/Jul - 19:59, Gilles Chanteperdrix wrote:
>> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
>> 
>> 
>> Well, this sucks, posted writes increase the timer programming
>> latency.
>> 
>> Does the latency test run correctly with this patch?
> 
> Yes, the latency test seems to work properly.

That is strange, because the Xenomai timer also uses non-posted writes.

> 
> I need to investigate a bit more, because the kernel without the
> patch seems to work properly with a different uboot (the one for my
> gumstix) while it hangs with the uboot for my beagleboard.

Perhaps the u-boot which works implement some workaround for processor
errata, which the u-boot which does not work does not implement?


- -- 
                                                                Gilles.
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  reply	other threads:[~2014-07-03 12:34 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-23  9:08 [Xenomai] Support of Beagleboard xm rev C on 3.14-ipipe Arnaud Degroote
2014-06-23  9:22 ` Gilles Chanteperdrix
2014-06-23 11:18   ` Arnaud Degroote
2014-06-23 23:45     ` Gilles Chanteperdrix
2014-06-24  6:23       ` Arnaud Degroote
2014-06-24  6:29         ` Gilles Chanteperdrix
2014-06-24 12:21           ` Arnaud Degroote
2014-06-24 18:31             ` Gilles Chanteperdrix
2014-06-25  8:11               ` Arnaud Degroote
2014-06-25  8:37                 ` Gilles Chanteperdrix
2014-06-25  9:47                   ` Arnaud Degroote
2014-06-25 17:01                     ` Gilles Chanteperdrix
2014-06-25 22:23                     ` Gilles Chanteperdrix
2014-06-26  7:56                       ` Arnaud Degroote
2014-06-26 11:08                         ` Gilles Chanteperdrix
2014-06-26 11:19                           ` Arnaud Degroote
2014-06-26 17:27                             ` Gilles Chanteperdrix
2014-06-27  7:22                               ` Arnaud Degroote
2014-06-27 16:27                                 ` Gilles Chanteperdrix
2014-06-30  8:16                                   ` Arnaud Degroote
2014-06-30  8:26                                   ` Arnaud Degroote
2014-06-30  8:59                                     ` Gilles Chanteperdrix
2014-06-30  9:13                                       ` Arnaud Degroote
2014-06-30  9:36                                         ` Gilles Chanteperdrix
2014-06-30 10:16                                         ` Gilles Chanteperdrix
2014-06-30 12:01                                           ` Arnaud Degroote
2014-06-30 12:07                                             ` Gilles Chanteperdrix
2014-06-30 12:37                                               ` Arnaud Degroote
2014-06-30 12:44                                                 ` Gilles Chanteperdrix
2014-06-30 15:18                                                 ` Arnaud Degroote
2014-06-30 15:26                                                   ` Gilles Chanteperdrix
2014-06-30 15:45                                                     ` Arnaud Degroote
2014-06-30 15:48                                                       ` Gilles Chanteperdrix
2014-06-30 16:06                                                         ` Arnaud Degroote
2014-06-30 16:13                                                           ` Gilles Chanteperdrix
2014-06-30 18:41                                                             ` DEGROOTE Arnaud
2014-06-30 19:06                                                               ` Gilles Chanteperdrix
2014-07-01  8:39                                                                 ` Arnaud Degroote
2014-07-01  9:24                                                                   ` Gilles Chanteperdrix
2014-07-01 15:51                                                                     ` Arnaud Degroote
2014-07-01 19:22                                                                       ` Gilles Chanteperdrix
2014-07-02 11:41                                                                         ` Arnaud Degroote
2014-07-02 17:59                                                                           ` Gilles Chanteperdrix
2014-07-03  8:38                                                                             ` Arnaud Degroote
2014-07-03 12:34                                                                               ` Gilles Chanteperdrix [this message]
2014-07-04  7:19                                                                                 ` Arnaud Degroote

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