From: Gabriele Moabiti <gabmoa@domain.hid>
To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: Xenomai help <xenomai@xenomai.org>
Subject: Re: [Xenomai-help] trap exceptions in user
Date: Mon, 13 Oct 2008 09:55:54 +0000 (GMT) [thread overview]
Message-ID: <967654.58327.qm@domain.hid> (raw)
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>> I did't specify I have passed mem=xxx to kernel to take the upper 16MB
>> I think the RTDM mapping works.
>
>Yes, but I still think this is useless. If your user-space code expects
>to be running from 1MB to 16MB, it expects this for virtual addresses,
>not for physical addresses. So, I really think you should mmap the 1MB
>to 16MB region by passing the start address to mmap with the MMAP_FIXED
>flag.
I have tried fixed mmap mode and I have no luck.
Outside the mmap mapped memory exceptions are trapped with rthal_trap_catch.
Inside the callback doesn't work... seems to dislike mapped memory...
Another question:
Is it right I can set rthal_trap_catch only in kernel rt/nrt task?
Gabriele
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next reply other threads:[~2008-10-13 9:55 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-13 9:55 Gabriele Moabiti [this message]
-- strict thread matches above, loose matches on Subject: below --
2008-10-24 19:17 [Xenomai-help] trap exceptions in user Gabriele Moabiti
2008-10-26 23:49 ` Gilles Chanteperdrix
2008-10-24 15:30 Gabriele Moabiti
2008-10-24 13:53 Gabriele Moabiti
2008-10-24 17:43 ` Gilles Chanteperdrix
2008-10-24 17:44 ` Gilles Chanteperdrix
2008-10-15 15:30 Gabriele Moabiti
2008-10-15 15:39 ` Jan Kiszka
2008-10-14 10:01 Gabriele Moabiti
2008-10-14 10:21 ` Jan Kiszka
2008-10-14 12:13 ` Gilles Chanteperdrix
2008-10-11 19:32 Gabriele Moabiti
2008-10-11 19:34 ` Gilles Chanteperdrix
2008-10-11 21:35 ` Philippe Gerum
2008-10-10 17:57 Gabriele Moabiti
2008-10-10 16:02 Gabriele Moabiti
2008-10-10 16:04 ` Gilles Chanteperdrix
2008-10-11 11:24 ` Gilles Chanteperdrix
2008-10-10 15:24 Gabriele Moabiti
2008-10-10 15:38 ` Gilles Chanteperdrix
2008-10-10 13:50 Gabriele Moabiti
2008-10-10 14:00 ` Gilles Chanteperdrix
2008-10-08 11:32 Gabriele Moabiti
2008-10-08 12:29 ` Gilles Chanteperdrix
2008-10-08 10:34 Gabriele Moabiti
2008-10-08 10:50 ` Gilles Chanteperdrix
[not found] <296620.67855.qm@domain.hid>
2008-10-08 10:09 ` Gilles Chanteperdrix
2008-10-03 12:30 Gabriele Moabiti
2008-10-03 14:58 ` Gilles Chanteperdrix
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