Re: [REGRESSION] applespi from 6.12 onwards

[Baolu Lu <baolu.lu@linux.intel.com>]

On 5/13/25 20:08, kobarity wrote:
> Baolu Lu wrote:
>> On 5/12/25 20:16, kobarity wrote:
>>> Baolu Lu wrote:
>>>> On 5/11/25 21:31, kobarity wrote:
>>>>>
>>>>> Hi
>>>>>
>>>>> I'm also experiencing this problem on my MacBookPro14,3.
>>>>>
>>>>> Aditya Garg wrote:
>>>>>>
>>>>>> Hi Jörg
>>>>>>
>>>>>> Can you test the kernel here to see if this fixes your issue:
>>>>>>
>>>>>> https://github.com/t2linux/T2-Debian-and-Ubuntu-Kernel/actions/runs/14944200356
>>>>>>
>>>>>> Alternatively you can try compiling your own kernel with this patch:
>>>>>>
>>>>>> https://lore.kernel.org/all/0-v1-c26553717e90+65f-iommu_vtd_ss_wo_jgg@nvidia.com/
>>>>>
>>>>> As far as I have tried, this patch did not solve the problem.
>>>>>
>>>>> By bisecting, I found that this problem was introduced by commit
>>>>> 2031c469f816 ("iommu/vt-d: Add support for static identity domain").
>>>>> In fact, since this commit, it will panic at startup.  This panic was
>>>>> fixed by commit 6e02a277f1db ("iommu/vt-d: Fix incorrect
>>>>> pci_for_each_dma_alias() for non-PCI devices").  So I applied commit
>>>>> 6e02a277f1db on commit 2031c469f816 and confirmed that the keyboard
>>>>> and touchpad is not working.
>>>>
>>>> Have you tried to apply commit 64f792981e35 ("iommu/vt-d: Remove device
>>>> comparison in context_setup_pass_through_cb")?
>>>
>>> Yes, I tried it on yesterday's master branch, including commit
>>> 64f792981e35.
>>>
>>> - Keyboard/Touchpad NOT working:
>>>     - No patches
>>>     - With patch in https://lore.kernel.org/all/0-v1-c26553717e90+65f-iommu_vtd_ss_wo_jgg@nvidia.com/
>>> - Keyboard/Touchpad working:
>>>     - With my workaround patch
>>
>> Okay, thanks! Can you please try below change? I also attached a diff
>> file in the attachment for your convenience.
> 
> Thanks!  The keyboard and touchpad now work with this patch.  I tested
> it with the same master branch as before (commit 3ce9925823c7).
> 

Okay, thanks! Let me post a formal fix patch for this.

Thanks,
baolu