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[2620:137:e000::1:20]) by mx.google.com with ESMTP id b17-20020a170906151100b006df76385bb2si4836346ejd.82.2022.05.27.11.49.43; Fri, 27 May 2022 11:50:10 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=LnbYL7XY; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1353693AbiE0PvO (ORCPT + 99 others); Fri, 27 May 2022 11:51:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56252 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353658AbiE0PvD (ORCPT ); Fri, 27 May 2022 11:51:03 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4D9BF134E29; Fri, 27 May 2022 08:50:58 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 16DB1B8259D; Fri, 27 May 2022 15:50:57 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4FEF8C385B8; Fri, 27 May 2022 15:50:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1653666655; bh=TPf6is16EOLHLwQWRGMgJn/SSSCwI0QxzD/Gb/AqW7Q=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=LnbYL7XY/hwZg1VbAnfs/juboFYB8oW1A6Rowzr2+JZ5PEgeSXaopCeK89HOD08y0 IXS5aZ4LLvFnvf9wyPEuzTJ1nQhcj/cDNLf/Ez0HBMTCx6JxGso9myFcDFnKGL0LsC K4js/L9rGFQGpKA294BNzS5ydTa/GsxhSRlPuVZrCjpTxZjxRyh3F9oE1t6GYLtHIO 2Ll5sGDa9/LOZJr6fvDz+QcuwHRS5wpxIkZzD5Ep5aoPBt3KSXWtFJBchqwYk6fhot 7Dl68DW7yr1s6ErTN9TpCq/cAem3HgrHrnT7l3cmgEbeX6+9s8p2Tb2G5F7q9KwUUW 5RiJiaLNNq2DA== Date: Fri, 27 May 2022 08:50:53 -0700 From: Josh Poimboeuf To: Masahiro Yamada Cc: linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, Peter Zijlstra , Josh Poimboeuf , llvm@lists.linux.dev, Helge Deller , linux-parisc@vger.kernel.org, Kees Cook , Nathan Chancellor , Nicolas Schier , Sedat Dilek , Michal Marek , Nick Desaulniers , Tom Rix Subject: Re: [PATCH v7 8/8] kbuild: rebuild multi-object modules when objtool is updated Message-ID: <20220527155053.i4xfrlupuqfu4kem@treble> References: <20220527100155.1996314-1-masahiroy@kernel.org> <20220527100155.1996314-9-masahiroy@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20220527100155.1996314-9-masahiroy@kernel.org> X-Spam-Status: No, score=-7.8 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 27, 2022 at 07:01:55PM +0900, Masahiro Yamada wrote: > When CONFIG_LTO_CLANG or CONFIG_X86_KERNEL_IBT is enabled, objtool for > multi-object modules is postponed until the objects are linked together. > > Make sure to re-run objtool and re-link multi-object modules when > objtool is updated. > > Signed-off-by: Masahiro Yamada > Reviewed-by: Kees Cook > Acked-by: Josh Poimboeuf > Tested-by: Nathan Chancellor > Reviewed-by: Nicolas Schier > Tested-by: Sedat Dilek # LLVM-14 (x86-64) Hi Masahiro, Is it also possible to rebuild vmlinux.o when objtool changes, for CONFIG_LTO_CLANG, CONFIG_X86_KERNEL_IBT, or CONFIG_NOINSTR_VALIDATION? That doesn't seem to be happening. -- Josh