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Re: Consider changing CONFIG_ACPI default on ARM?


  • To: Elliott Mitchell <ehem+xen@xxxxxxx>
  • From: Jan Beulich <jbeulich@xxxxxxxx>
  • Date: Wed, 27 Aug 2025 08:49:34 +0200
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  • Cc: Demi Marie Obenour <demiobenour@xxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Paul Leiber <paul@xxxxxxxxxxxxxxxx>
  • Delivery-date: Wed, 27 Aug 2025 06:49:44 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 26.08.2025 22:31, Elliott Mitchell wrote:
> On Mon, Aug 25, 2025 at 10:07:18AM +0200, Jan Beulich wrote:
>> On 22.08.2025 22:09, Elliott Mitchell wrote:
>>> On Fri, Aug 15, 2025 at 10:14:42AM +0200, Jan Beulich wrote:
>>>> On 14.08.2025 23:27, Demi Marie Obenour wrote:
>>>>> On 8/14/25 02:55, Jan Beulich wrote:
>>>>>>
>>>>>> Parties interested in changing the support status of any component are 
>>>>>> the
>>>>>> primary candidates to actually carry out the necessary work.
>>>>>
>>>>> What is that work?
>>>>
>>>> To determine what exactly needs doing is part of the exercise. I, for one, 
>>>> am
>>>> unaware of a concrete written down set of things which need doing.
>>>
>>> Since you're not pointing to anything definite, could it be everything
>>> has been resolved?
>>
>> Possible. Yet even then the state of things needs fully writing down, perhaps
>> in a commit message for the patch changing the support status. That's likely
>> still a time consuming job.
> 
> Issue is much of this is better done by the people doing those projects.
> Most of what I've done is checking a real hardware/software platform and
> confirmed functionality.  Presently it boots, but the framebuffer doesn't
> work.  VMs appear to work fine though.
> 
> How does the attached patch look for enabling ACPI?

The main (Arm) effect of it I can't judge on. I don't, however, think that
an experimental option can be default-on. That would effectively make it
(security-)supported. And of course there are a few formal issues with the
patch.

Jan



 


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