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

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Message-ID: <d9f3352a-1c1f-464a-a8fd-741cd96b5f8e@loongson.cn>
Date: Mon, 20 Oct 2025 09:24:01 +0800
From: Tiezhu Yang <yangtiezhu@...ngson.cn>
To: Josh Poimboeuf <jpoimboe@...nel.org>, Ard Biesheuvel <ardb@...nel.org>
Cc: Huacai Chen <chenhuacai@...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

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

Thanks,
Tiezhu