linux-kernel - Re: [PATCH] arch/powerpc: Remove .interp section in vmlinux

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Message-ID: <aO8XEhMdT19UOPlp@linux.ibm.com>
Date: Wed, 15 Oct 2025 09:07:54 +0530
From: Vishal Chourasia <vishalc@...ux.ibm.com>
To: Nathan Chancellor <nathan@...nel.org>
Cc: Christophe Leroy <christophe.leroy@...roup.eu>, maddy@...ux.ibm.com,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com,
        "llvm@...ts.linux.dev" <llvm@...ts.linux.dev>
Subject: Re: [PATCH] arch/powerpc: Remove .interp section in vmlinux

Hello Nathan,

On Tue, Oct 14, 2025 at 05:21:54PM -0700, Nathan Chancellor wrote:
> In this bug report, you mention using LLVM=1. Does the issue happen if
> you use GNU ld (ld.bfd) via LD (i.e., LD=powerpc64le-linux-gnu-ld or
> equivalent) over ld.lld from LLVM=1? This sounds more likely to be a
> linker difference rather than a compiler difference.

Thank you for the insight.

Yes, when using powerpc64le-linux-gnu-ld linker .interp section is not
emitted.

Command:
$ make LLVM=1 ARCH=powerpc LD=powerpc64le-linux-gnu-ld -j 8 zImage
$ llvm-readelf -p .comment vmlinux

String dump of section '.comment':
[     0] clang version 22.0.0git (https://github.com/llvm/llvm-project.git 7314565281ec28b745502c3f429fd431e16673eb)

$ llvm-readelf -p .interp vmlinux                                                                                    
llvm-readelf: warning: 'vmlinux': could not find section '.interp'


vishalc