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From: Sedat Dilek <sedat.dilek@gmail.com>
To: masahiroy@kernel.org
Cc: linux-arch@vger.kernel.org, linux-xtensa@linux-xtensa.org,
	x86@kernel.org, Ard Biesheuvel <ard.biesheuvel@linaro.org>,
	Peter Zijlstra <peterz@infradead.org>,
	linux-s390@vger.kernel.org, linux-kbuild@vger.kernel.org,
	Will Deacon <will.deacon@arm.com>,
	linux-kernel@vger.kernel.org,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Max Filippov <jcmvbkbc@gmail.com>, Ingo Molnar <mingo@redhat.com>,
	Josh Poimboeuf <jpoimboe@redhat.com>,
	sparclinux@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>,
	linuxppc-dev@lists.ozlabs.org,
	"David S . Miller" <davem@davemloft.net>,
	linux-arm-kernel@lists.infradead.org,
	Masahiro Yamada <yamada.masahiro@socionext.com>
Subject: Re: jump_label: move 'asm goto' support test to Kconfig
Date: Wed, 2 Jan 2019 13:14:18 +0100	[thread overview]
Message-ID: <CA+icZUU=1S0Xg3+zWNU-60eknfWyL2kjEPm2BNNTK8Eu-tkTEg@mail.gmail.com> (raw)

Hi,

I was not aware that CONFIG_JUMP_LABEL Kconfig setting depends on the
support of asm-goto.

Currently, I am doing experiments with clang-7 and a snapshot of
clang-8 on Linux/x86.
These compilers have no asm-goto support.

What is your recommendation for Linux >= v4.20?
I am asking as it is possible to set CONFIG_JUMP_LABEL=y when
compiling with clang - which has no effect.
This is confusing.

Thanks, this patch makes things clearer and protects users from
setting "wrong" in the sense of non-functional settings.

I have tested this against recent Linus tree where kbuild/kconfig Git
pulls were latest commits.

Tested-by: Sedat Dilek <sedat.dilek@gmail.com> [ x86 with LLVM/Clang
v7 and v8 (snapshot) ]

Thanks.

Regards,
- Sedat -

             reply	other threads:[~2019-01-02 12:58 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-02 12:14 Sedat Dilek [this message]
2019-01-03  0:35 ` jump_label: move 'asm goto' support test to Kconfig Masahiro Yamada
2019-01-04  9:56   ` Sedat Dilek

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