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=-13.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_IN_DEF_DKIM_WL autolearn=no 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 BCCF2C433E0 for ; Sat, 30 Jan 2021 00:56:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5160B64DD9 for ; Sat, 30 Jan 2021 00:56:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232808AbhA3A4C (ORCPT ); Fri, 29 Jan 2021 19:56:02 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60318 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232918AbhA3Arn (ORCPT ); Fri, 29 Jan 2021 19:47:43 -0500 Received: from mail-pl1-x631.google.com (mail-pl1-x631.google.com [IPv6:2607:f8b0:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ADEFDC0617A9 for ; Fri, 29 Jan 2021 16:46:13 -0800 (PST) Received: by mail-pl1-x631.google.com with SMTP id y10so2041696plk.7 for ; Fri, 29 Jan 2021 16:46:13 -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=sOYufdKif/Scq2e39hV/4HV4zK+OLCAmzma8mjBFh2U=; b=Wo0ro2Zy8l1+MQXIt8UlVk5b6AplAXNdT6fsrb1zdWgJxtT15PaLgslD8sAUfzRAXw cts9oMJtp5dFVyjMtdnwhlpt6tOrxbnuAMnTcYxxU/NDjNvUMXCF+IgEIgBZ8g8VWnUm y6a4HSKvO0kPhzfKtp3zrEJG6YYPStkeHjijWIAH2mjTMyOHLF6YI329QCLHOI32+ecZ 4LII6Wv4g+Zs4PeziTIpqeUwTtY90X7Jx3kG+hgDXC3YN2y8UooN7Ixjkeobv+A+EFWJ +01KxUkWillNj8avz/zzwkFjuwknN11Wpe3M00D6eLhHqBImGhEoeS8z1QpwqeuV4sLz +tjQ== 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=sOYufdKif/Scq2e39hV/4HV4zK+OLCAmzma8mjBFh2U=; b=LI/RvahLO6zPHX2+BihipLICRoi0+Xz2BH7sQFnl8ZqRSofi3j5S3CNlItgMmWziwL U8lBbeGIKVyvaZ1oI6kR1g7rZAVucZj9J6RtSCid3XccsEiqfA6euCuC6WVbVG7rda0e nmYMF8ysbx7Qazd4NEKDgjbCG5UPSzMY7QbJlKetgKZllLKKX9PFesLasqtgQ67LvQWw tt6CVpjMtSceLoOk3MKod0FTgqpBJb6qrQJV5B6GgK3LafPYdVvttza9lSzheVzetawO xmnVdca1ozIKxEZF6AwydFdWBoFWHbz86aSWkgQVNe4kFIGhUOzWQ1jDhp8K2yFmaXrT 4dyA== X-Gm-Message-State: AOAM530eqqsiPM6J9mltxDs6qTixqJ6vWo0d1EI4QFJHWKp+r7hyvKGz 4BoIvAQG0QF/V8HSIy481+OeJl8B+Qo0uC+leaAjv50jg3Q= X-Google-Smtp-Source: ABdhPJx7TQwRJujg6Rf1/nJXAq+yZpWh+nkOZ6cCyjORiT8vUbQP5fbUn6tjd8b8ruQik8LP/r3Z9rCvG324klwKDNo= X-Received: by 2002:a17:902:ed94:b029:de:8844:a650 with SMTP id e20-20020a170902ed94b02900de8844a650mr6915188plj.56.1611967573031; Fri, 29 Jan 2021 16:46:13 -0800 (PST) MIME-Version: 1.0 References: <20210129194318.2125748-1-ndesaulniers@google.com> In-Reply-To: From: Nick Desaulniers Date: Fri, 29 Jan 2021 16:46:02 -0800 Message-ID: Subject: Re: [PATCH v6 0/2] Kbuild: DWARF v5 support To: Sedat Dilek Cc: Masahiro Yamada , Nathan Chancellor , Andrew Morton , LKML , Clang-Built-Linux ML , Linux Kbuild mailing list , linux-arch , Jakub Jelinek , Fangrui Song , Caroline Tice , Nick Clifton , Yonghong Song , Jiri Olsa , Andrii Nakryiko , Arnaldo Carvalho de Melo Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jan 29, 2021 at 4:08 PM Sedat Dilek wrote: > > On Fri, Jan 29, 2021 at 8:43 PM Nick Desaulniers > wrote: > > > > DWARF v5 is the latest standard of the DWARF debug info format. > > > > DWARF5 wins significantly in terms of size and especially so when mixed > > with compression (CONFIG_DEBUG_INFO_COMPRESSED). > > > > Link: http://www.dwarfstd.org/doc/DWARF5.pdf > > > > Patch 1 is a cleanup that lays the ground work and isn't DWARF > > v5 specific. > > Patch 2 implements Kconfig and Kbuild support for DWARFv5. > > > > When you will do a v7... > > Can you look also at places where we have hardcoded DWARF-2 handling... Ah, sorry, I just saw this now, after sending v7. Can we wait to purge DWARF v2 until after we have DWARF v5? In fact, if they are orthogonal like I suspect, why don't you send some patches and I will help you test them? -- Thanks, ~Nick Desaulniers