Re: [PATCH] arm64 module: remove (NOLOAD)
From: Ard Biesheuvel <ardb@kernel.org>
Date: 2022-02-18 08:18:04
Also in:
lkml, llvm
On Fri, 18 Feb 2022 at 09:12, Fangrui Song [off-list ref] wrote:
On ELF, (NOLOAD) sets the section type to SHT_NOBITS[1]. It is conceptually inappropriate for .plt and .text.* sections which are always SHT_PROGBITS. In GNU ld, if PLT entries are needed, .plt will be SHT_PROGBITS anyway and (NOLOAD) will be essentially ignored. In ld.lld, since https://reviews.llvm.org/D118840 ("[ELF] Support (TYPE=<value>) to customize the output section type"), ld.lld will report a `section type mismatch` error. Just remove (NOLOAD) to fix the error. [1] https://lld.llvm.org/ELF/linker_script.html As of today, "The section should be marked as not loadable" on https://sourceware.org/binutils/docs/ld/Output-Section-Type.html is outdated for ELF.
This patch lacks a SOB line. With one added, Acked-by: Ard Biesheuvel <ardb@kernel.org>
quoted hunk ↗ jump to hunk
--- arch/arm64/include/asm/module.lds.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)diff --git a/arch/arm64/include/asm/module.lds.h b/arch/arm64/include/asm/module.lds.h index a11ccadd47d2..094701ec5500 100644 --- a/arch/arm64/include/asm/module.lds.h +++ b/arch/arm64/include/asm/module.lds.h@@ -1,8 +1,8 @@ SECTIONS { #ifdef CONFIG_ARM64_MODULE_PLTS - .plt 0 (NOLOAD) : { BYTE(0) } - .init.plt 0 (NOLOAD) : { BYTE(0) } - .text.ftrace_trampoline 0 (NOLOAD) : { BYTE(0) } + .plt 0 : { BYTE(0) } + .init.plt 0 : { BYTE(0) } + .text.ftrace_trampoline 0 : { BYTE(0) } #endif #ifdef CONFIG_KASAN_SW_TAGS --2.35.1.265.g69c8d7142f-goog
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