Message-ID: <50F7B5BC.20701@xenomai.org>
Date: Thu, 17 Jan 2013 09:26:36 +0100
From: Philippe Gerum <rpm@xenomai.org>
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Subject: Re: [Xenomai] [PATCH] ipipe: Re-fix migration helper for legacy
	users
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To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Xenomai <xenomai@xenomai.org>

On 01/16/2013 08:17 PM, Jan Kiszka wrote:
> In the legacy use case, __ipipe_switch_tail will be invoked over the
> non-root domain after hardening. So clearing of TASK_HARDENING must not
> be restricted to root.
>
> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
> ---
>
> For the case my analysis was right. With this, Xenomai 2.6 works again
> here.
>
>   kernel/ipipe/core.c |    2 ++
>   1 files changed, 2 insertions(+), 0 deletions(-)
>
> diff --git a/kernel/ipipe/core.c b/kernel/ipipe/core.c
> index 6929156..4695ba8 100644
> --- a/kernel/ipipe/core.c
> +++ b/kernel/ipipe/core.c
> @@ -1124,7 +1124,9 @@ int __ipipe_switch_tail(void)
>   	hard_local_irq_disable();
>   #endif
>   	x = __ipipe_root_p;
> +#ifndef CONFIG_IPIPE_LEGACY
>   	if (x)
> +#endif
>   		complete_domain_migration();
>
>   #ifndef CONFIG_IPIPE_WANT_PREEMPTIBLE_SWITCH
>

The analysis is right. I already fixed this bug in the 3.5 branch, we 
are missing a forward port to 3.5.7.

http://git.denx.de/?p=ipipe-2.6.git;a=commit;h=8b11dc5fee73842a24ec4367b57aaa2dcdd67225

-- 
Philippe.