From: Nathan Chancellor <nathan@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Nick Desaulniers <ndesaulniers@google.com>,
clang-built-linux@googlegroups.com,
Nathan Chancellor <nathan@kernel.org>,
Arnd Bergmann <arnd@arndb.de>
Subject: [PATCH] arm64: Make CPU_BIG_ENDIAN depend on !LD_IS_LLD
Date: Mon, 1 Feb 2021 19:24:42 -0700 [thread overview]
Message-ID: <20210202022441.1451389-1-nathan@kernel.org> (raw)
Similar to commit 28187dc8ebd9 ("ARM: 9025/1: Kconfig: CPU_BIG_ENDIAN
depends on !LD_IS_LLD"), ld.lld does not support aarch64 big endian,
leading to the following build error when CONFIG_CPU_BIG_ENDIAN is
selected:
ld.lld: error: unknown emulation: aarch64linuxb
There are not currently plans to implement big endian support for
aarch64 in ld.lld but if it should be supported in the future, this
symbol can depend on the version that first supports it. In the
meantime, prevent this symbol from being selected to avoid these type
of build errors.
While we are here, the indentation of this symbol used spaces since its
introduction in commit a872013d6d03 ("arm64: kconfig: allow
CPU_BIG_ENDIAN to be selected"). Change it to tabs to be consistent with
kernel coding style.
Link: https://github.com/ClangBuiltLinux/linux/issues/380
Link: https://github.com/ClangBuiltLinux/linux/issues/1288
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
arch/arm64/Kconfig | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index f39568b28ec1..5ddf9fe7b4ee 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -952,8 +952,9 @@ choice
that is selected here.
config CPU_BIG_ENDIAN
- bool "Build big-endian kernel"
- help
+ bool "Build big-endian kernel"
+ depends on !LD_IS_LLD
+ help
Say Y if you plan on running a kernel with a big-endian userspace.
config CPU_LITTLE_ENDIAN
base-commit: 88bb507a74ea7d75fa49edd421eaa710a7d80598
--
2.30.0
next reply other threads:[~2021-02-02 2:25 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-02 2:24 Nathan Chancellor [this message]
2021-02-02 8:04 ` [PATCH] arm64: Make CPU_BIG_ENDIAN depend on !LD_IS_LLD Arnd Bergmann
2021-02-02 19:51 ` Nathan Chancellor
2021-02-02 20:43 ` Arnd Bergmann
2021-02-03 10:08 ` Peter Smith
2021-02-07 2:30 ` Nathan Chancellor
2021-02-09 0:57 ` [PATCH v2] arm64: Make CPU_BIG_ENDIAN depend on ld.bfd or ld.lld 13.0.0+ Nathan Chancellor
2021-02-09 1:39 ` Nick Desaulniers
2021-02-09 14:35 ` Will Deacon
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210202022441.1451389-1-nathan@kernel.org \
--to=nathan@kernel.org \
--cc=arnd@arndb.de \
--cc=catalin.marinas@arm.com \
--cc=clang-built-linux@googlegroups.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=ndesaulniers@google.com \
--cc=will@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).