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[46.139.12.213]) by smtp.gmail.com with ESMTPSA id z89-v6sm36806501wrb.3.2018.10.02.03.59.54 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 02 Oct 2018 03:59:54 -0700 (PDT) Date: Tue, 2 Oct 2018 12:59:52 +0200 From: Ingo Molnar To: Nadav Amit Cc: Rasmus Villemoes , Ingo Molnar , LKML , X86 ML , Sam Ravnborg , Michal Marek , Thomas Gleixner , "H. Peter Anvin" , "linux-kbuild@vger.kernel.org" Subject: Re: [PATCH v8 02/10] Makefile: Prepare for using macros for inline asm Message-ID: <20181002105952.GA13611@gmail.com> References: <20180918212847.199085-1-namit@vmware.com> <20180918212847.199085-3-namit@vmware.com> <1aa5a1f3-ef3d-5cd3-831c-2202d73d3c9e@rasmusvillemoes.dk> <307823F9-DCCF-4384-9FBE-28642FAD6B4E@vmware.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <307823F9-DCCF-4384-9FBE-28642FAD6B4E@vmware.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Nadav Amit wrote: > at 1:58 AM, Rasmus Villemoes wrote: > > > On 2018-09-18 23:28, Nadav Amit wrote: > > > >> diff --git a/arch/x86/Makefile b/arch/x86/Makefile > >> index 8f6e7eb8ae9f..944fa3bc9376 100644 > >> --- a/arch/x86/Makefile > >> +++ b/arch/x86/Makefile > >> @@ -214,8 +214,8 @@ ifdef CONFIG_X86_64 > >> KBUILD_LDFLAGS += $(call ld-option, -z max-page-size=0x200000) > >> endif > >> > >> -# Speed up the build > >> -KBUILD_CFLAGS += -pipe > >> +# We cannot use -pipe flag since we give an additional .s file to the compiler > >> +#KBUILD_CFLAGS += -pipe > > > > Is this really necessary? The gas manual says that one can use -- to > > name stdin, though that's probably a typo and should just be - . Doing > > > > gcc -pipe -Wa,foo.s -Wa,- > > Good idea. I didn’t think of it. Yes, this can do the trick. I’ll do it in > v9. Ok, will wait for v9. Thanks, Ingo