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

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Message-Id: <96a8d591-29d5-4764-94f9-6042252e53ff@app.fastmail.com>
Date: Fri, 21 Nov 2025 16:09:50 +0100
From: "Arnd Bergmann" <arnd@...db.de>
To: "Thomas Zimmermann" <tzimmermann@...e.de>,
 "Ard Biesheuvel" <ardb@...nel.org>,
 "Javier Martinez Canillas" <javierm@...hat.com>
Cc: 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, 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>

It should also bring us one step closer to eventually
disconnecting the x86 boot ABI from the kernel-internal
sysfb_primary_display.

    Arnd