linux-kernel - Re: [PATCH v2] ppc: add "-z notext" flag to disable diagnostic

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Message-Id: <163007013373.52768.2144821424552273961.b4-ty@ellerman.id.au>
Date:   Fri, 27 Aug 2021 23:15:33 +1000
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Daniel Axtens <dja@...ens.net>, Paul Mackerras <paulus@...ba.org>,
        linuxppc-dev@...ts.ozlabs.org, clang-built-linux@...glegroups.com,
        Nathan Chancellor <nathan@...nel.org>,
        Fangrui Song <maskray@...gle.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        linux-kernel@...r.kernel.org,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Bill Wendling <morbo@...gle.com>
Cc:     Itaru Kitayama <itaru.kitayama@...en.jp>
Subject: Re: [PATCH v2] ppc: add "-z notext" flag to disable diagnostic

On Fri, 13 Aug 2021 13:05:11 -0700, Bill Wendling wrote:
> Object files used to link .tmp_vmlinux.kallsyms1 have many R_PPC64_ADDR64
> relocations in non-SHF_WRITE sections. There are many text relocations (e.g. in
> .rela___ksymtab_gpl+* and .rela__mcount_loc sections) in a -pie link and are
> disallowed by LLD:
> 
>   ld.lld: error: can't create dynamic relocation R_PPC64_ADDR64 against local symbol in readonly segment; recompile object files with -fPIC or pass '-Wl,-z,notext' to allow text relocations in the output
>   >>> defined in arch/powerpc/kernel/head_64.o
>   >>> referenced by arch/powerpc/kernel/head_64.o:(__restart_table+0x10)
> 
> [...]

Applied to powerpc/next.

[1/1] ppc: add "-z notext" flag to disable diagnostic
      https://git.kernel.org/powerpc/c/0355785313e2191be4e1108cdbda94ddb0238c48

cheers