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riscv module: remove (NOLOAD) 

[ Upstream commit 60210a3d86dc57ce4a76a366e7841dda746a33f7 ]

On ELF, (NOLOAD) sets the section type to SHT_NOBITS[1]. It is conceptually
inappropriate for .plt, .got, and .got.plt 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 (later changed to a warning). Just remove (NOLOAD) to
fix the warning.

[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outdated for ELF.

Link: https://github.com/ClangBuiltLinux/linux/issues/1597
Fixes: ab1ef68e54 ("RISC-V: Add sections of PLT and GOT for kernel module")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Fangrui Song <maskray@google.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Fangrui Song 2022-03-21 18:26:17 -07:00 committed by Greg Kroah-Hartman
parent 68a7bb6948
commit 63efb90030
1 changed files with 3 additions and 3 deletions
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6
arch/riscv/kernel/module.lds
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@ -2,7 +2,7 @@
/* Copyright (C) 2017 Andes Technology Corporation */
SECTIONS {
.plt (NOLOAD) : { BYTE(0) }
.got (NOLOAD) : { BYTE(0) }
.got.plt (NOLOAD) : { BYTE(0) }
.plt : { BYTE(0) }
.got : { BYTE(0) }
.got.plt : { BYTE(0) }
}