linux-kernel - Re: [PATCH] scripts/min-tool-version.sh: Raise minimum clang version to 13.0.0 for s390

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Date:   Thu, 17 Jun 2021 12:59:21 -0700
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Nathan Chancellor <nathan@...nel.org>
Cc:     Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        clang-built-linux <clang-built-linux@...glegroups.com>,
        linux-s390 <linux-s390@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        lkft-triage@...ts.linaro.org, Arnd Bergmann <arnd@...db.de>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Naresh Kamboju <naresh.kamboju@...aro.org>
Subject: Re: [PATCH] scripts/min-tool-version.sh: Raise minimum clang version
 to 13.0.0 for s390

On Thu, Jun 17, 2021 at 12:32 PM Nathan Chancellor <nathan@...nel.org> wrote:
>
> clang versions prior to the current development version of 13.0.0 cannot
> compile s390 after commit 3abbdfde5a65 ("s390/bitops: use register pair
> instead of register asm") and the s390 maintainers do not intend to work
> around this in the kernel. Codify this in scripts/min-tool-version.sh
> similar to arm64 with GCC 5.1.0 so that there are no reports of broken
> builds.
>
> Reported-by: Naresh Kamboju <naresh.kamboju@...aro.org>
> Signed-off-by: Nathan Chancellor <nathan@...nel.org>

Acked-by: Nick Desaulniers <ndesaulniers@...gle.com>

> ---
>
> This should probably go through the s390 tree with Masahiro's ack.
>
>  scripts/min-tool-version.sh | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/scripts/min-tool-version.sh b/scripts/min-tool-version.sh
> index d22cf91212b0..319f92104f56 100755
> --- a/scripts/min-tool-version.sh
> +++ b/scripts/min-tool-version.sh
> @@ -30,7 +30,12 @@ icc)
>         echo 16.0.3
>         ;;
>  llvm)
> -       echo 10.0.1
> +       # https://lore.kernel.org/r/YMtib5hKVyNknZt3@osiris/
> +       if [ "$SRCARCH" = s390 ]; then
> +               echo 13.0.0
> +       else
> +               echo 10.0.1
> +       fi
>         ;;
>  *)
>         echo "$1: unknown tool" >&2
>
> base-commit: 7d9c6b8147bdd76d7eb2cf6f74f84c6918ae0939
> --
> 2.32.0.93.g670b81a890
>
> --
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-- 
Thanks,
~Nick Desaulniers