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

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Message-ID: <CAMj1kXE+mS1Sm5GaROU0P97J2w1pew0P_To4sKiw8h1iOMuLcg@mail.gmail.com>
Date: Fri, 21 Nov 2025 16:56:45 +0100
From: Ard Biesheuvel <ardb@...nel.org>
To: Thomas Zimmermann <tzimmermann@...e.de>
Cc: Arnd Bergmann <arnd@...db.de>, Javier Martinez Canillas <javierm@...hat.com>, x86@...nel.org, 
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
	linux-efi@...r.kernel.org, loongarch@...ts.linux.dev, 
	linux-riscv@...ts.infradead.org, dri-devel@...ts.freedesktop.org, 
	linux-hyperv@...r.kernel.org, linux-pci@...r.kernel.org, 
	linux-fbdev@...r.kernel.org
Subject: Re: [PATCH 0/6] arch, sysfb: Move screen and edid info into single place

On Fri, 21 Nov 2025 at 16:53, Thomas Zimmermann <tzimmermann@...e.de> wrote:
>
> Hi
>
> Am 21.11.25 um 16:16 schrieb Ard Biesheuvel:
> > On Fri, 21 Nov 2025 at 16:10, Arnd Bergmann <arnd@...db.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@...db.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@...nel.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