Received: by 2002:a05:6a10:f347:0:0:0:0 with SMTP id d7csp4019174pxu; Mon, 30 Nov 2020 15:49:58 -0800 (PST) X-Google-Smtp-Source: ABdhPJyI7M2p3waOqz9BbTu4/Y83NYH0q1zcX8mRz7KIvazQimOdIelEktymou8aiGRKQrnKeo09 X-Received: by 2002:a50:ff05:: with SMTP id a5mr177396edu.43.1606780197839; Mon, 30 Nov 2020 15:49:57 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1606780197; cv=none; d=google.com; s=arc-20160816; b=jlR0hBGdtHUhM4XTnEyEURAI4/Qf8MHFtGWKKP6QT06v95fV2xvhFpMhaFHfnCfGQ1 sWMWdqKuKzZ5HqBxqofcIfTVpmusrJ+w8ZKFam8+JjZZ2fouuSrtbq4Qk5/cywd0feUv FGS6B9hOM7iPiDApq2LWaMes9JF0Zp0k4o6+mpFor/+nE551aXVHACXmFg14BwoxNVP5 3rBRPI3C7EskB9uMsioP0yCc9MwPYKGImaVF42VQk+LN5bt0rJ3Iti1CkB/3PLFKqiPr tf1fW8vmdECWHiQnSSBKGJqnSwFfwTygbv+5LWijBx/8CeDXAu4VX61KG1vREEHY51KU c8Pg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:cc:to:subject:message-id:date:from:in-reply-to :references:mime-version:dkim-signature; bh=ja5iGBqziMZwVeGBVGC3tNT2ITsfFSrpoAOQrYPIRMQ=; b=cyFpLba8ySSqcHNnOLwiL6S609ir/iXxG43zM947+hASfAUpNtoXR1LfX6Oeg8qLfe pqd7jigNgbNIc1HxXYM5YMVXLErGPblZ1BpzvTH3yXhuNtqPXl/JGz/Nn734HkIIUOBZ gbS24bHqPSlD29OOeUpT2ZI7SQYLSyi6jY4ThzvghFAe7iJUUs1ADTgUg4AXkLdVK+l1 4uWaeIOMNs9rvEah1zUCX72anuZ29Yub7/rYVNeC0PMD7AQ1hwOandhqPYXPJARjEeV0 ktqJ0vc8Ig6UHt33CMkDZZZqeZY6Zj2IIvfVFleUJrdkStcybrsSCq6A/KGftFejc5CZ A/9Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@google.com header.s=20161025 header.b=eIXhFNYr; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id r19si9060120ejs.1.2020.11.30.15.49.34; Mon, 30 Nov 2020 15:49:57 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20161025 header.b=eIXhFNYr; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388633AbgK3Xpb (ORCPT + 99 others); Mon, 30 Nov 2020 18:45:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49668 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388050AbgK3Xpa (ORCPT ); Mon, 30 Nov 2020 18:45:30 -0500 Received: from mail-ua1-x944.google.com (mail-ua1-x944.google.com [IPv6:2607:f8b0:4864:20::944]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D9938C0613CF for ; Mon, 30 Nov 2020 15:44:44 -0800 (PST) Received: by mail-ua1-x944.google.com with SMTP id q4so4350074ual.8 for ; Mon, 30 Nov 2020 15:44:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=ja5iGBqziMZwVeGBVGC3tNT2ITsfFSrpoAOQrYPIRMQ=; b=eIXhFNYrQLrGwHzLPxYGVzWJa/DjXZ3+RK17U4inbSIH8/cLDO1KD8N72OM/zUzB53 8yZIeDx97sYjz1uuAvgXJWY765o7D+jPAp3RstXWhEiYWpp6ZfWnqW3rRJRO93eLdG7N 2D9TsLZvw7lNns1x8kWHXquH6wydBNpMO2aUV+NR7F+6FAuRbZwFPyrw1V0DxEKSqnp1 vdA7qZ099dTy0qixQPzpa9880t8pAmy3P49uy+98kt3oenJTnRXEAx2MWqQdTsTmzPcS FKM8rzdiYWV3COU/X3eovPeyZKHokoQStzQObR4NRJfYg5/2ZfrRz9fPrSbgCSdilzFy 91tw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=ja5iGBqziMZwVeGBVGC3tNT2ITsfFSrpoAOQrYPIRMQ=; b=gY1D1XiZZTd2CjhKnLKHBrCIP08t0inM71agGsAAQbe1AIp2Vju2XDuapRJpkEgv47 DTROzf7empdv345Zn55ZG8eWXb/JNDBFt2hZk7ZnHtug/DUq6gem+FQHiD0chhOpZ3OU chUlzEWyjdzojHwFTwPrQXDIR4CovC9DY25QKK2qFlCCuCYWzJmxc8XemJQ34tFpZRr2 yTlTPkZE58hpMeWcSCdUbKrRfeMMnNQ0nLZ45jXE4xFB3V3ASBTGCyEkuNBlULB901ta 5JGd3bMVqvTjZKVuv6riLCXiDlIsa3C8cYY/22GooOgyBRUuLElelzYacBX9uixrWl8A fcxg== X-Gm-Message-State: AOAM53110SaLXDqCWqtsyf6jvV9iuySuDJkLNpuImK+un2JuL5HLZd7A ovMNsCLhsWu6fIGtEj8d4lqYaxXVltbkW+Wc4zeQ/Q== X-Received: by 2002:a9f:2595:: with SMTP id 21mr286471uaf.33.1606779883895; Mon, 30 Nov 2020 15:44:43 -0800 (PST) MIME-Version: 1.0 References: <20201118220731.925424-1-samitolvanen@google.com> <20201118220731.925424-15-samitolvanen@google.com> <20201130115222.GC24563@willie-the-truck> In-Reply-To: <20201130115222.GC24563@willie-the-truck> From: Sami Tolvanen Date: Mon, 30 Nov 2020 15:44:32 -0800 Message-ID: Subject: Re: [PATCH v7 14/17] arm64: vdso: disable LTO To: Will Deacon Cc: Masahiro Yamada , Steven Rostedt , Josh Poimboeuf , Peter Zijlstra , Greg Kroah-Hartman , "Paul E. McKenney" , Kees Cook , Nick Desaulniers , clang-built-linux , Kernel Hardening , linux-arch , linux-arm-kernel , linux-kbuild , LKML , linux-pci@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Nov 30, 2020 at 3:52 AM Will Deacon wrote: > > On Wed, Nov 18, 2020 at 02:07:28PM -0800, Sami Tolvanen wrote: > > Disable LTO for the vDSO by filtering out CC_FLAGS_LTO, as there's no > > point in using link-time optimization for the small about of C code. > > "about" => "amount" ? Oops, I'll fix that in v8. Thanks! Sami