Re: [PATCH] x86/efistub: Add options for forcing Apple set_os protocol

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Hi Aditya,

On Sun, 9 Feb 2025 at 17:13, Aditya Garg <gargaditya08@xxxxxxxx> wrote:
>
> Hi all
>

Please don't top post.

> I managed to get feedbacks regarding eGPUs on older non T2 MacBooks, and can confirm that apple-set-os is needed there as well.
>

This is rather vague. Where did you get this feedback, and what
systems does it cover?

Also, this is not about being able to switch to the integrated GPU to
drive the built-in panel, but for driving an external GPU connected to
a different screen altogether. AIUI, this has never worked on these
systems, right? So why is this important now, for 10 year old
Macbooks?

> I was wondering if we can reach a conclusion for this case here.
>

I'd prefer to address this in a different way: instead of fixing this
in the Linux kernel for the handful of systems that need this (and
that will upgrade to v6.15 or later to get this fix), why not use a
separate boot-time EFI app to call the protocol. That way, it works
with existing kernels too, and no changes are needed to Linux.

https://paste.debian.net/1349311/




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