From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Tue, 09 May 2006 22:54:24 +0200
From: Jan Kiszka <jan.kiszka@domain.hid>
MIME-Version: 1.0
Subject: Re: [Xenomai-core] [bug] lock-up by failing rt_task_spawn/create
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To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: xenomai-core <xenomai@xenomai.org>

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Gilles Chanteperdrix wrote:
> Jan Kiszka wrote:
>  > BTW, this reminds me the ask for a merging plan of the kgdb support =
for
>  > ipipe - this bug was tracked down via kgdb...
>=20
> There are some issues with the kgdb patch:
> - it does not work if the nucleus is compiled as a module, because it
>   uses xnpod_current_thread()

I know, but I do not have a clean solution for this yet. A workaround
would be to force the nucleus into the kernel via kconfig if the kgdb is
enabled. Any other ideas how to detect kernel-only threads (i.e. invalid
"current")?

> - it does not work on SMP because the kgdb patch uses
>   smp_processor_id(), which does not work on SMP over Xenomai domain.
>=20

Ok, but probably fixable. If simple search&replace in the kgdb patch is
not enough, a similar workaround could be applied for now: disallow kgdb
usage over SMP.

Jan


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