linux-kernel - Re: [PATCH v3 9/9] efi: move screen

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Message-ID: <ZSUbwXQCVmuehlKS@arm.com>
Date:   Tue, 10 Oct 2023 10:39:13 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Arnd Bergmann <arnd@...nel.org>
Cc:     Thomas Zimmermann <tzimmermann@...e.de>,
        linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        Arnd Bergmann <arnd@...db.de>,
        "David S. Miller" <davem@...emloft.net>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        Ard Biesheuvel <ardb@...nel.org>,
        Borislav Petkov <bp@...en8.de>, Brian Cain <bcain@...cinc.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Daniel Vetter <daniel@...ll.ch>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        David Airlie <airlied@...il.com>,
        Deepak Rawat <drawat.floss@...il.com>,
        Dexuan Cui <decui@...rosoft.com>,
        Dinh Nguyen <dinguyen@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Guo Ren <guoren@...nel.org>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Helge Deller <deller@....de>,
        Huacai Chen <chenhuacai@...nel.org>,
        Ingo Molnar <mingo@...hat.com>,
        Javier Martinez Canillas <javierm@...hat.com>,
        John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
        Khalid Aziz <khalid@...ehiking.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Matt Turner <mattst88@...il.com>,
        Max Filippov <jcmvbkbc@...il.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Nicholas Piggin <npiggin@...il.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Russell King <linux@...linux.org.uk>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        WANG Xuerui <kernel@...0n.name>, Wei Liu <wei.liu@...nel.org>,
        Will Deacon <will@...nel.org>, x86@...nel.org,
        linux-alpha@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-efi@...r.kernel.org,
        linux-csky@...r.kernel.org, linux-hexagon@...r.kernel.org,
        linux-ia64@...r.kernel.org, loongarch@...ts.linux.dev,
        linux-mips@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-riscv@...ts.infradead.org, linux-sh@...r.kernel.org,
        sparclinux@...r.kernel.org, linux-hyperv@...r.kernel.org
Subject: Re: [PATCH v3 9/9] efi: move screen_info into efi init code

On Mon, Oct 09, 2023 at 11:18:45PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> After the vga console no longer relies on global screen_info, there are
> only two remaining use cases:
> 
>  - on the x86 architecture, it is used for multiple boot methods
>    (bzImage, EFI, Xen, kexec) to commucate the initial VGA or framebuffer
>    settings to a number of device drivers.
> 
>  - on other architectures, it is only used as part of the EFI stub,
>    and only for the three sysfb framebuffers (simpledrm, simplefb, efifb).
> 
> Remove the duplicate data structure definitions by moving it into the
> efi-init.c file that sets it up initially for the EFI case, leaving x86
> as an exception that retains its own definition for non-EFI boots.
> 
> The added #ifdefs here are optional, I added them to further limit the
> reach of screen_info to configurations that have at least one of the
> users enabled.
> 
> Reviewed-by: Ard Biesheuvel <ardb@...nel.org>
> Reviewed-by: Javier Martinez Canillas <javierm@...hat.com>
> Acked-by: Helge Deller <deller@....de>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  arch/arm/kernel/setup.c                       |  4 ----
>  arch/arm64/kernel/efi.c                       |  4 ----
>  arch/arm64/kernel/image-vars.h                |  2 ++

It's more Ard's thing and he reviewed it already but if you need another
ack:

Acked-by: Catalin Marinas <catalin.marinas@....com>