linux-kernel - Re: [PATCH v2] efistub: Only link libstub to final vmlinux

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Message-ID: <CAAhV-H6m5vszCyiF3qi94cpHBPVuqM2xH93D=gfsQqOSYvC-sA@mail.gmail.com>
Date: Mon, 20 Oct 2025 14:55:48 +0800
From: Huacai Chen <chenhuacai@...nel.org>
To: Tiezhu Yang <yangtiezhu@...ngson.cn>
Cc: Josh Poimboeuf <jpoimboe@...nel.org>, Ard Biesheuvel <ardb@...nel.org>, loongarch@...ts.linux.dev, 
	linux-arm-kernel@...ts.infradead.org, linux-riscv@...ts.infradead.org, 
	linux-efi@...r.kernel.org, linux-kbuild@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] efistub: Only link libstub to final vmlinux

On Mon, Oct 20, 2025 at 9:24 AM Tiezhu Yang <yangtiezhu@...ngson.cn> wrote:
>
> Hi Josh, Ard and Huacai,
>
> On 2025/10/18 上午1:05, Josh Poimboeuf wrote:
>
> ...
>
> > But IIUC, the libstub code runs *very* early, and wouldn't show up in a
> > stack trace anyway, because there are no traces of it on the stack once
> > it branches to head.S code (which doesn't save the link register).
>
> Thanks for your discussions.
>
> Are you OK with this current patch?
For me the current patch is just OK.


Huacai

> Or should I update this patch to remove the changes of arm64 and riscv?
> Or any other suggestions?
>
> Thanks,
> Tiezhu
>
>