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Message-ID: <ZoJDuunseVIDua-m@wunner.de>
Date: Mon, 1 Jul 2024 07:50:50 +0200
From: Lukas Wunner <lukas@...ner.de>
To: Ard Biesheuvel <ardb@...nel.org>
Cc: Aditya Garg <gargaditya08@...e.com>,
Hans de Goede <hdegoede@...hat.com>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
Kerem Karabay <kekrby@...il.com>,
Orlando Chamberlain <orlandoch.dev@...il.com>
Subject: Re: [PATCH v2] efi: libstub: add support for the apple_set_os
protocol
On Mon, Jul 01, 2024 at 07:38:38AM +0200, Ard Biesheuvel wrote:
> Any thoughts on whether this should depend on CONFIG_APPLE_GMUX or not?
I tend towards *not* making it depend on CONFIG_APPLE_GMUX:
* The gpu-switch utility Orlando linked to doesn't use the apple-gmux
driver. (It changes EFI variables that influence to which GPU the
EFI driver will switch on next reboot.)
* apple_set_os() has side effects beyond exposing the iGPU (such as
switching the keyboard+trackpad access method to SPI instead of USB).
If there are issues, they will be harder to debug if their occurrence
depends on a Kconfig option.
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