From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0154BC10F0E for ; Mon, 15 Apr 2019 16:12:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C0ED12075B for ; Mon, 15 Apr 2019 16:12:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Pa4FP18a" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727874AbfDOQML (ORCPT ); Mon, 15 Apr 2019 12:12:11 -0400 Received: from mail-ed1-f65.google.com ([209.85.208.65]:41500 "EHLO mail-ed1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726522AbfDOQML (ORCPT ); Mon, 15 Apr 2019 12:12:11 -0400 Received: by mail-ed1-f65.google.com with SMTP id g6so11236283edc.8; Mon, 15 Apr 2019 09:12:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=mfR67O5uzhL+W/kXKjgRK+h5z0stG4aLMzE9rLCaSq8=; b=Pa4FP18aCYBhzUXu2XjNKs/oVZXE2oLwsAfV7jMTCdOLP49806h4Coc+nM/W9Vt8NP rwRLynhfrjIn4Z3WNbUg6Jt/x5upHLJQ8Hv/vngT+WtNpKl+xid7PbRHh2108Cs3R9+n O3PArttb9+0jIxmd5TVrw+dPgi/WRIIsATN1UQqRvsEgza3I/tZ4Pgex+uMRR+2HMejt 4InA33r9hvYYgeiluyIt4pmfRdsuu47YbTcf8ssyHU1AX+ZZWLiDMvzKpf0luaI2FQZz 4Q7Q3xH7tuZjkquSF8PqYbrVONfmtb7qLtOfAgxyP44zbQh1aTIbC+DQYmT7ybrFjIY+ g7rg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=mfR67O5uzhL+W/kXKjgRK+h5z0stG4aLMzE9rLCaSq8=; b=YAHJVHpCPg0b3qkVlPo35zYdvACeLkKqwji/JBcqYcjMiSf+OQaWw4tZ9XvG2wrCVa q5br5Yf282i8CU147HcNLf2lYigy/N5glhFwftqOKJ+OIz4ZFGJl+uu2L/4f/h1YIPrW rbQGM9KY6PjO3FlbtxSKVzNZYC4tVg2IIJqWKh1Gwq7awmxM/C8ReFfVndufoBNt2dYI lyktrFaNQg7fl4u8D7dpd+eouK1zR0GtmQWcUviaxM/hA3z4QDYx+CdRSCOhsm9TPBRu y+epRoge4iN4j2DbKX8HRGfNP+38GW41EHQGUhArb+TRkeFvRb9T/I2rj77f6cVhPm3T xdkw== X-Gm-Message-State: APjAAAW6tBqukhiG2vewXTfFFYQMjdNt4HKVa+XsJpE4Wihbb3Egvg7s w9e/Btn/78mWMa2bxyYf5Ug= X-Google-Smtp-Source: APXvYqz1DwAQSX/GFh3COJel1OdmJib8l9US29q0JS6adOO/Bi2PmX9Be9UghKvTSeqA+fLbPsfrXg== X-Received: by 2002:a50:9052:: with SMTP id z18mr9214097edz.256.1555344728991; Mon, 15 Apr 2019 09:12:08 -0700 (PDT) Received: from archlinux-i9 ([2a01:4f9:2b:2b84::2]) by smtp.gmail.com with ESMTPSA id i12sm9249007ejp.57.2019.04.15.09.12.07 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Mon, 15 Apr 2019 09:12:08 -0700 (PDT) Date: Mon, 15 Apr 2019 09:12:06 -0700 From: Nathan Chancellor To: Arnd Bergmann Cc: Martin Schwidefsky , Heiko Carstens , clang-built-linux@googlegroups.com, Nick Desaulniers , linux-s390@vger.kernel.org, Vasily Gorbik , Masahiro Yamada , Luc Van Oostenryck , Philipp Rudo , linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 2/4] s390: boot, purgatory: pass $(CLANG_FLAGS) where needed Message-ID: <20190415161206.GA6928@archlinux-i9> References: <20190415083605.2560074-1-arnd@arndb.de> <20190415083605.2560074-2-arnd@arndb.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190415083605.2560074-2-arnd@arndb.de> User-Agent: Mutt/1.11.4 (2019-03-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Apr 15, 2019 at 10:35:52AM +0200, Arnd Bergmann wrote: > The purgatory and boot Makefiles do not inherit the original cflags, > so clang falls back to the default target architecture when building it, > typically this would be x86 when cross-compiling. > > Add $(CLANG_FLAGS) everywhere so we pass the correct --target=s390x-linux > option when cross-compiling. > > Signed-off-by: Arnd Bergmann Reviewed-by: Nathan Chancellor > --- > arch/s390/Makefile | 4 ++-- > arch/s390/purgatory/Makefile | 1 + > 2 files changed, 3 insertions(+), 2 deletions(-) > > diff --git a/arch/s390/Makefile b/arch/s390/Makefile > index 9c079a506325..9a228786e34f 100644 > --- a/arch/s390/Makefile > +++ b/arch/s390/Makefile > @@ -17,9 +17,9 @@ KBUILD_CFLAGS_MODULE += -fPIC > KBUILD_AFLAGS += -m64 > KBUILD_CFLAGS += -m64 > aflags_dwarf := -Wa,-gdwarf-2 > -KBUILD_AFLAGS_DECOMPRESSOR := -m64 -D__ASSEMBLY__ > +KBUILD_AFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -D__ASSEMBLY__ > KBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),$(aflags_dwarf)) > -KBUILD_CFLAGS_DECOMPRESSOR := -m64 -O2 > +KBUILD_CFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -O2 > KBUILD_CFLAGS_DECOMPRESSOR += -DDISABLE_BRANCH_PROFILING -D__NO_FORTIFY > KBUILD_CFLAGS_DECOMPRESSOR += -fno-delete-null-pointer-checks -msoft-float > KBUILD_CFLAGS_DECOMPRESSOR += -fno-asynchronous-unwind-tables > diff --git a/arch/s390/purgatory/Makefile b/arch/s390/purgatory/Makefile > index ce6a3f75065b..ecd0b3847fef 100644 > --- a/arch/s390/purgatory/Makefile > +++ b/arch/s390/purgatory/Makefile > @@ -22,6 +22,7 @@ KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes > KBUILD_CFLAGS += -Wno-pointer-sign -Wno-sign-compare > KBUILD_CFLAGS += -fno-zero-initialized-in-bss -fno-builtin -ffreestanding > KBUILD_CFLAGS += -c -MD -Os -m64 -msoft-float -fno-common > +KBUILD_CFLAGS += $(CLANG_FLAGS) > KBUILD_CFLAGS += $(call cc-option,-fno-PIE) > KBUILD_AFLAGS := $(filter-out -DCC_USING_EXPOLINE,$(KBUILD_AFLAGS)) > > -- > 2.20.0 >