linux-kernel - Re: [PATCH 0/2] Fix objtool warnings if LTO is enabled for LoongArch

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Message-ID: <20250814230137.GA2247447@ax162>
Date: Thu, 14 Aug 2025 16:01:37 -0700
From: Nathan Chancellor <nathan@...nel.org>
To: Tiezhu Yang <yangtiezhu@...ngson.cn>
Cc: Josh Poimboeuf <jpoimboe@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Huacai Chen <chenhuacai@...nel.org>, loongarch@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] Fix objtool warnings if LTO is enabled for LoongArch

On Tue, Aug 12, 2025 at 09:27:14PM +0800, Tiezhu Yang wrote:
> The patch #1 should be a preparation for patch #2, that is to say,
> the patch #2 is dependent on the patch #1, otherwise there is build
> error if LTO is enabled after only applying patch #2.

Thanks, these two patches do indeed resolve most of the warnings that I
see.

Tested-by: Nathan Chancellor <nathan@...nel.org>

> With this series, most of warnings have been silenced, only remains
> the following warning by now, it needs more analysis:
> 
>   vmlinux.o: warning: objtool: __efistub_efi_boot_kernel() falls through
>   to next function __efistub_exit_boot_func()

Yes, I do see this one too. Odd, as efi_boot_kernel() ends in a
__noreturn function...

Cheers,
Nathan