linux-kernel - Re: [PATCH 0/3] Allow CONFIG_PPC64_BIG_ENDIAN_ELF_ABI

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Message-Id: <167948793442.559204.2964050663889516909.b4-ty@ellerman.id.au>
Date:   Wed, 22 Mar 2023 23:25:34 +1100
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     mpe@...erman.id.au, Nathan Chancellor <nathan@...nel.org>
Cc:     npiggin@...il.com, christophe.leroy@...roup.eu,
        erhard_f@...lbox.org, ndesaulniers@...gle.com, trix@...hat.com,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        llvm@...ts.linux.dev, patches@...ts.linux.dev
Subject: Re: [PATCH 0/3] Allow CONFIG_PPC64_BIG_ENDIAN_ELF_ABI_V2 with ld.lld 15+

On Wed, 15 Feb 2023 11:41:14 -0700, Nathan Chancellor wrote:
> Currently, CONFIG_PPC64_BIG_ENDIAN_ELF_ABI_V2 is not selectable with
> ld.lld because of an explicit dependency on GNU ld, due to lack of
> testing with LLVM.
> 
> Erhard was kind enough to test this option on his hardware with LLVM 15,
> which ran without any issues. This should not be too surprising, as
> ld.lld does not have support for the ELFv1 ABI, only ELFv2, so it should
> have decent support. With this series, big endian kernels can be built
> with LLVM=1.
> 
> [...]

Applied to powerpc/next.

[1/3] powerpc/boot: Only use '-mabi=elfv2' with CONFIG_PPC64_BOOT_WRAPPER
      https://git.kernel.org/powerpc/c/d1c5accacb234c3a9f1609a73b4b2eaa4ef07d1a
[2/3] powerpc: Fix use of '-mabi=elfv2' with clang
      https://git.kernel.org/powerpc/c/7c3bd8362b06cff0a4044a4975adb7d71db2dfba
[3/3] powerpc: Allow CONFIG_PPC64_BIG_ENDIAN_ELF_ABI_V2 with ld.lld 15+
      https://git.kernel.org/powerpc/c/a11334d8327b3fd7987cbfb38e956a44c722d88f

cheers