Re: [PATCH v6 4/4] meta: Deploy DTBs once per kernel

[Zhihang Wei <wzh@ilbers.de>]

On 4/17/26 16:42, Jan Kiszka wrote:
> On 17.04.26 16:17, Zhihang Wei wrote:
>>
>> On 2/13/26 09:01, 'Jan Kiszka' via isar-users wrote:
>>> On 13.02.26 08:40, Anton Mikanovich wrote:
>>>> From: Uladzimir Bely <ubely@ilbers.de>
>>>>
>>>> Task do_copy_boot_files deploys DTB files into the same location for
>>>> different images (e.g., isar-image-base and isar-image-ci). This causes
>>>> a build error.
>>>>
>>>> do_copy_boot_files is called once for every image recipe while dtb files
>>>> belong to the kernel which is the same for both images. Performing dtb
>>>> deployment once for the same kernel solves the issue.
>>>>
>>> This remains inconsistent: DTBs are just another artifact of the kernel.
>> Since DTB belongs to the kernel and should stay with it, how about
>> moving both kernel and DTB deployment together into a separate recipe,
>> rather than keeping them in the image generation process? Logically,
>> the deployment of these artifacts does not belong to the image
>> generation process. With this approach, kernel and DTB are only
>> deployed once, DTB names remain the same. We do have one API change
>> here, kernel image names are no longer prefixed with the image name.
> The image selects the kernel it wants (and thus also the DTBs). We could
> create a meta recipe/package that expresses this selection and deploy
> from there, but it will cause quick some churn down the line as well.
> I'm also not sure if it will actually change anything our problem this
> way because in the end it is about deploying twice, not about from where
> (image or some recipe).
>
> Jan
>
If the kernel/DTB deployment becomes a separate task and image creation
depends on it, wouldn't the second image simply reuse the
already-completed task rather than deploying again? The dependency would
be marked as done, so the "deploying twice" issue should be avoided.

Did I miss something here?

Zhihang

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