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=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL 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 B526CC433E6 for ; Fri, 5 Mar 2021 23:52:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 91B8A65073 for ; Fri, 5 Mar 2021 23:52:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229759AbhCEXvi (ORCPT ); Fri, 5 Mar 2021 18:51:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42184 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229816AbhCEXvS (ORCPT ); Fri, 5 Mar 2021 18:51:18 -0500 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BC846C061760 for ; Fri, 5 Mar 2021 15:51:18 -0800 (PST) Received: by mail-yb1-xb4a.google.com with SMTP id v6so4267091ybk.9 for ; Fri, 05 Mar 2021 15:51:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=pPq2GBjtEGTbACHirO3sey8ygX15UCpeGvoYm9Um0sk=; b=PtRIbdn8JBaqxVShA+CtjFu88vBYubaAm1tFH89mUeHx65u8jfjdUEWOyhi3FioeLY Kjfoceud2r4uoyWG+ZU767KGl2gnY0SwMl3d8l407sWSPHPlyUOiIfVEK/KRgzkpJU5P Zqxd1J+3RUGiYAwPcIFKzvehnJQPgZlac+N37njsgBiDV+eA03pvIjcaDWMMs0iIbcOH xJkF/quIBA8a8p/GxdVysovpFlPGiLGa4Eeul/sg+OIzEW3MG3BzStIPJyRo2IOTEwG+ oFgtdDX6SbKs+5x1YnoaBANAHJpAlHP+ayxmQ84vKMNGP8KqID2KCyRpoI1lt4C9R2E8 K3Sg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=pPq2GBjtEGTbACHirO3sey8ygX15UCpeGvoYm9Um0sk=; b=NALrQR9T5R7zJ8Pb1h6l5md18e/3hFQYhXYcK/t6TMZenyiv4q34rMYZ4+uOwGwCAz bdtJOLStD7ilEM4vbs/oxTPR9keNfW3/p9qbVEq21Lq/xNUXa1Oh4CLH4z1a2LqPxMqo TY6tBZ4JmUgNAMWSL9aDvj3OH64Z3/BzQoFkHWy0Jc03F2SoRFr62lz6+BA7GFCV11Nq kyP3keJwmUybZY4pTtCimEmuWD/VGlAU4+vHvcuTTBCBqlw/xExwxdbm5d7syOZv8RLI BL1Q9XEzR5HjNaMbe3w0R9Qz7cCk0pdI7YdrvQQLAQsk1c0F30yHRpPIATy1p9ECaYCL eNXA== X-Gm-Message-State: AOAM531kmoTTgKWXfcucI2Mpj5NE82J1eDj/T0OT1hDLGq+vCIz/Ig1b SmoEhHAB89dUnc0NoEzpA5/RXzUTyulFeEiFmrk= X-Google-Smtp-Source: ABdhPJwcjcq2tS5DwOh+XNcqIbmdizHq1xlXoBKH5EIsFXWJYua8EhHBmi8EMhdFw1jp9L3SdHKITvL51kGbc87kavk= Sender: "ndesaulniers via sendgmr" X-Received: from ndesaulniers1.mtv.corp.google.com ([2620:15c:211:202:b008:4ea5:7b83:9aff]) (user=ndesaulniers job=sendgmr) by 2002:a25:b46:: with SMTP id 67mr17897674ybl.50.1614988277967; Fri, 05 Mar 2021 15:51:17 -0800 (PST) Date: Fri, 5 Mar 2021 15:51:02 -0800 In-Reply-To: <20210303170932.1838634-1-jthierry@redhat.com> Message-Id: <20210305235102.384950-1-ndesaulniers@google.com> Mime-Version: 1.0 References: <20210303170932.1838634-1-jthierry@redhat.com> X-Mailer: git-send-email 2.30.1.766.gb4fecdf3b7-goog Subject: Re: [RFC PATCH v2 00/13] objtool: add base support for arm64 From: Nick Desaulniers To: jthierry@redhat.com Cc: ardb@kernel.org, catalin.marinas@arm.com, jpoimboe@redhat.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, mark.rutland@arm.com, masahiroy@kernel.org, peterz@infradead.org, will@kernel.org, ycote@redhat.com, maskray@google.com, morbo@google.com, swine@google.com, yonghyun@google.com, clang-built-linux@googlegroups.com, Nick Desaulniers Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org (in response to https://lore.kernel.org/linux-arm-kernel/20210303170932.1838634-1-jthierry@redhat.com/ from the command line) > Changes since v1[2]: > - Drop gcc plugin in favor of -fno-jump-tables Thank you for this! I built+booted(under emulation) arm64 defconfig and built arm64 allmodconfig with LLVM=1 with this series applied. Tested-by: Nick Desaulniers One thing I noticed was a spew of warnings for allmodconfig, like: init/main.o: warning: objtool: asan.module_ctor()+0xc: call without frame pointer save/setup init/main.o: warning: objtool: asan.module_dtor()+0xc: call without frame pointer save/setup I assume those are from the KASAN constructors. See also: https://github.com/ClangBuiltLinux/linux/issues/1238 Can we disable HAVE_STACK_PROTECTOR if CC_IS_CLANG and CONFIG_KASAN is set, until we can resolve the above issue?