Re: [PATCH] dovetail: Fix interrupt re-enabling after hibernation

[Philippe Gerum <rpm@xenomai.org>]

Jan Kiszka <jan.kiszka@siemens.com> writes:

> On 20.03.25 17:50, Florian Bezdeka wrote:
>> On Thu, 2025-03-20 at 17:41 +0100, Jan Kiszka wrote:
>>> From: Jan Kiszka <jan.kiszka@siemens.com>
>>>
>>> We had unbalanced hard_cond_local_irq_disable here so far.
>>>
>>> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
>>> ---
>>>
>>> Minus one hunk that is already in current 6.12.y, this needs to be 
>>> applied to older stable versions as well.
>> 
>> How was that tested? I think up to now nobody really cared about
>> hibernation... Will that really work now when I try to test that or
>> will I run into (other) problems?
>> 
>
> This was not tested yet, but the affected code is patched since an
> eternity. If we don't want to support this anymore, we must remove the
> changes AND declare CONFIG_HIBERNATION incompatible to
> CONFIG_IRQ_PIPELINE instead.
>

We may definitely have a system running a real-time core which is
allowed to hibernate at specific times (e.g. a copier running Xenomai
would typically do this). This used to work fine for a couple of
projects I can think of (granted, a long time ago). Let's fix the code.

-- 
Philippe.