From: Heiko Carstens <heiko.carstens@de.ibm.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>,
clang-built-linux@googlegroups.com,
Nick Desaulniers <ndesaulniers@google.com>,
Nathan Chancellor <natechancellor@gmail.com>,
linux-s390@vger.kernel.org,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Philipp Rudo <prudo@linux.vnet.ibm.com>,
Tony Krowiak <akrowiak@linux.ibm.com>,
Ursula Braun <ubraun@linux.ibm.com>,
Rob Herring <robh@kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 1/4] s390: only build for new CPUs with clang
Date: Fri, 3 May 2019 16:25:45 +0200 [thread overview]
Message-ID: <20190503142545.GC5602@osiris> (raw)
In-Reply-To: <20190415083605.2560074-1-arnd@arndb.de>
On Mon, Apr 15, 2019 at 10:35:51AM +0200, Arnd Bergmann wrote:
> llvm does does not understand -march=z9-109 and older target
> specifiers, so disable the respective Kconfig settings and
> the logic to make the boot code work on old systems when
> building with clang.
>
> Part of the early boot code is normally compiled with -march=z900
> for maximum compatibility. This also has to get changed with
> clang to the oldest supported ISA, which is -march=z10 here.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> arch/s390/Kconfig | 6 ++++++
> arch/s390/boot/Makefile | 18 ++++++++++++------
> 2 files changed, 18 insertions(+), 6 deletions(-)
Applied, thanks.
prev parent reply other threads:[~2019-05-03 14:25 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-15 8:35 [PATCH v2 1/4] s390: only build for new CPUs with clang Arnd Bergmann
2019-04-15 8:35 ` [PATCH v2 2/4] s390: boot, purgatory: pass $(CLANG_FLAGS) where needed Arnd Bergmann
2019-04-15 16:12 ` Nathan Chancellor
2019-05-03 14:26 ` Heiko Carstens
2019-04-15 8:35 ` [PATCH v2 3/4] s390: drop CONFIG_VIRT_TO_BUS Arnd Bergmann
2019-05-03 14:26 ` Heiko Carstens
2019-04-15 8:35 ` [PATCH v2 4/4] s390: fix clang -Wpointer-sign warnigns in boot code Arnd Bergmann
2019-04-22 17:51 ` Nick Desaulniers
2019-04-23 8:05 ` Arnd Bergmann
2019-04-23 18:21 ` Nick Desaulniers
2019-05-03 14:27 ` Heiko Carstens
2019-05-03 14:25 ` Heiko Carstens [this message]
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