Re: [PATCH 0/6] arch, sysfb: Move screen and edid info into single place

[Thomas Zimmermann <tzimmermann@suse.de>]

Hi

Am 21.11.25 um 16:56 schrieb Ard Biesheuvel:
> On Fri, 21 Nov 2025 at 16:53, Thomas Zimmermann <tzimmermann@suse.de> wrote:
>> Hi
>>
>> Am 21.11.25 um 16:16 schrieb Ard Biesheuvel:
>>> On Fri, 21 Nov 2025 at 16:10, Arnd Bergmann <arnd@arndb.de> wrote:
>>>> On Fri, Nov 21, 2025, at 14:36, Thomas Zimmermann wrote:
>>>>> Replace screen_info and edid_info with sysfb_primary_device of type
>>>>> struct sysfb_display_info. Update all users.
>>>>>
>>>>> Sysfb DRM drivers currently fetch the global edid_info directly, when
>>>>> they should get that information together with the screen_info from their
>>>>> device. Wrapping screen_info and edid_info in sysfb_primary_display and
>>>>> passing this to drivers enables this.
>>>>>
>>>>> Replacing both with sysfb_primary_display has been motivate by the EFI
>>>>> stub. EFI wants to transfer EDID via config table in a single entry.
>>>>> Using struct sysfb_display_info this will become easily possible. Hence
>>>>> accept some churn in architecture code for the long-term improvements.
>>>> This all looks good to me,
>>>>
>>>> Acked-by: Arnd Bergmann <arnd@arndb.de>
>> Thanks
>>
>>>> It should also bring us one step closer to eventually
>>>> disconnecting the x86 boot ABI from the kernel-internal
>>>> sysfb_primary_display.
>>>>
>>> Agreed
>>>
>>> Acked-by: Ard Biesheuvel <ardb@kernel.org>
>> Thanks
>>
>>> I can take patches 1-2 right away, if that helps during the next cycle.
>>   From my sysfb-focused POV, these patches would ideally all go through
>> the same tree, say efi or generic arch, or whatever fits best. Most of
>> the other code is only renames anyway.
>>
> I don't mind queueing all of it, but I did get a conflict on
> drivers/pci/vgaarb.c

Probably from a78835b86a44 ("PCI/VGA: Select SCREEN_INFO on X86") that I 
have in my tree. You can fix it by replacing screen_info with 
sysfb_primary_display.screen. The later merge conflict seems manageable.

Best regards
Thomas


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Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
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