From: David Woodhouse <dwmw2@infradead.org>
To: peterz@infradead.org, hpa@zytor.com, luto@kernel.org,
arjan@linux.intel.com, tglx@linutronix.de,
dan.j.williams@intel.com, torvalds@linux-foundation.org,
gregkh@linuxfoundation.org, mingo@kernel.org, bp@alien8.de,
linux-kernel@vger.kernel.org, dave.hansen@linux.intel.com,
jpoimboe@redhat.com, linux-tip-commits@vger.kernel.org
Subject: Re: [tip:x86/pti] objtool, retpolines: Integrate objtool with retpoline support more closely
Date: Wed, 21 Feb 2018 10:59:14 +0000 [thread overview]
Message-ID: <1519210754.6482.43.camel@infradead.org> (raw)
In-Reply-To: <tip-b4879c9b99a43e6c580d563f292a569a016af2a4@git.kernel.org>
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On Wed, 2018-02-21 at 02:34 -0800, tip-bot for Peter Zijlstra wrote:
>
> --- a/Makefile
> +++ b/Makefile
> @@ -489,6 +489,11 @@ KBUILD_CFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC)
> KBUILD_AFLAGS += $(CLANG_TARGET) $(CLANG_GCC_TC)
> endif
>
> +ifneq ($(call cc-option,-mindirect-branch=thunk-extern -mindirect-branch-register),)
> + CC_HAS_RETPOLINE := 1
> +endif
> +export CC_HAS_RETPOLINE
> +
That isn't the same as the check in arch/x86/Makefile.
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next parent reply other threads:[~2018-02-21 10:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <tip-b4879c9b99a43e6c580d563f292a569a016af2a4@git.kernel.org>
2018-02-21 10:59 ` David Woodhouse [this message]
2018-02-21 12:53 ` [tip:x86/pti] objtool, retpolines: Integrate objtool with retpoline support more closely Peter Zijlstra
2018-02-21 13:12 ` Peter Zijlstra
2018-02-21 15:55 ` [PATCH v2] " Ingo Molnar
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