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Date: Mon, 20 Jun 2011 21:41:03 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai-core] [Xenomai-git] Jan Kiszka : nucleus: Fix
	interrupt handler tails
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To: Jan Kiszka <jan.kiszka@domain.hid>
Cc: Xenomai core <Xenomai-core@domain.hid>

On 06/20/2011 09:38 PM, Jan Kiszka wrote:
> On 2011-06-20 19:33, Gilles Chanteperdrix wrote:
>> On 06/20/2011 06:43 PM, Jan Kiszka wrote:
>>> On 2011-06-19 17:41, Gilles Chanteperdrix wrote:
>>>> Merged your whole branch, but took the liberty to change it a bit
>>>> (replacing the commit concerning unlocked context switches with comments
>>>> changes only, and changing the commit about xntbase_tick).
>>>
>>> What makes splmax() redundant for the unlocked context switch case? IMO
>>> that bug is still present.
>>
>> No, the bug is between my keyboard and chair. On architectures with
>> unlocked context switches, the Linux task switch still happens with irqs
>> off, only the mm switch happens with irqs on.
> 
> Then why do we call xnlock_get_irqsave in
> xnsched_finish_unlocked_switch? Why not simply xnlock_get if irqs are
> off anyway?

Because of the Xenomai task switch, not the Linux task switch.

-- 
                                                                Gilles.