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=-7.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,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 BD15BC48BD6 for ; Wed, 26 Jun 2019 19:00:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8CE08216C8 for ; Wed, 26 Jun 2019 19:00:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="RtwE3i/9" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726614AbfFZTAf (ORCPT ); Wed, 26 Jun 2019 15:00:35 -0400 Received: from mail-ed1-f67.google.com ([209.85.208.67]:45287 "EHLO mail-ed1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726104AbfFZTAe (ORCPT ); Wed, 26 Jun 2019 15:00:34 -0400 Received: by mail-ed1-f67.google.com with SMTP id a14so4603366edv.12 for ; Wed, 26 Jun 2019 12:00:33 -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=YkTKyAgOchwSgE2hnZzQced+CNVoJRfpIyg5duzJl3U=; b=RtwE3i/9/ZwjJPmNI83xcRjlnGXneW5ze0n9MCu0SOOubbMHjrEHjpDl+FfgcAmlSr lQT0hdZPHlnybiZG66W+9mtBV0wYvPfxjfmbYitzNxpyWpWWau2VW225ggWzgudj9vsA 4qjBSe157aXOmev/oenk6RQMK5PiKrER8guNE4eS47iEz7vvUb/ZKlEXGqYdhpCdeJKS Y439kp+BpmMSjv5c+AAb4XRoX4J07n6Wcz2mQNAWU9LW23YcXxXFdyWsgIXkh17d2oIF SSycj2OFIKJ5Tr8OemClI/dgte5RWjbFJ+sd45KMY08R2QTpUPExDNTDj1h55fcX4plm +PDA== 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=YkTKyAgOchwSgE2hnZzQced+CNVoJRfpIyg5duzJl3U=; b=Zp9+pqijphWhN+Q5NxaA+Knv1eJIiRdJ/5uU2YXuQtfmddphNbHvaOmXDTrAsgsDHg 5/oAGdEAnHagAXT8Av9VlMNpWvjoDfoJdlhQDDvLMrvDqGwjSaimf+gT0CbOqV1Te1ec xJobiXv+2IOjcutsaCf4kiw9WAGtu6Z+Y2hHJpHx56NHzNU34Z8JJ6DsChxuqIDwrDaj jpZc73kDhl1kBVRCJcgH9M0B8o06Ww5Z/n7XLQnKCamRSpo6a+dMLn+SGKtc2kuXt3mX 1rU6UbB1O67TDnFWshxZOCqBjRYmvvo26chyGmCvSm80GbEejUx+dL8Tkw2LvksFqBY1 5nLQ== X-Gm-Message-State: APjAAAU0WO1QhmHz+d7byshDdVrAtPU9e7kYJ9bCzTM2qJU5rdKuPxiI b5Dbh9AM7DC1a+UEQwt89pQ= X-Google-Smtp-Source: APXvYqwoEwYfzCgJrOJDbRWs1iWKyXokMyw/1l56GzHETwFNa9SZDp0HlY1D4ABBQRsFRAYNS+4wtA== X-Received: by 2002:a17:906:2a94:: with SMTP id l20mr5562305eje.131.1561575632227; Wed, 26 Jun 2019 12:00:32 -0700 (PDT) Received: from archlinux-epyc ([2a01:4f9:2b:2b15::2]) by smtp.gmail.com with ESMTPSA id dc1sm3056666ejb.39.2019.06.26.12.00.30 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Wed, 26 Jun 2019 12:00:31 -0700 (PDT) Date: Wed, 26 Jun 2019 12:00:28 -0700 From: Nathan Chancellor To: Thomas Gleixner Cc: Kees Cook , Peter Zijlstra , Miguel Ojeda , "Gustavo A. R. Silva" , Joe Perches , Ingo Molnar , Arnaldo Carvalho de Melo , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Borislav Petkov , "H. Peter Anvin" , "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" , Kan Liang , linux-kernel , Shawn Landden , clang-built-linux@googlegroups.com, Josh Poimboeuf Subject: Re: [PATCH] perf/x86/intel: Mark expected switch fall-throughs Message-ID: <20190626190028.GA14249@archlinux-epyc> References: <3dc75cd4-9a8d-f454-b5fb-64c3e6d1f416@embeddedor.com> <20190625071846.GN3436@hirez.programming.kicks-ass.net> <201906251009.BCB7438@keescook> <20190625180525.GA119831@archlinux-epyc> <20190625202746.GA83499@archlinux-epyc> <20190626051035.GA114229@archlinux-epyc> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.12.1 (2019-06-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 26, 2019 at 05:18:37PM +0200, Thomas Gleixner wrote: > tarball with log and the preprocessed source and run scripts: > > https://tglx.de/~tglx/tc-crash.tar.bz2 > > The machine runs up to date debian stretch which has backports enabled and > I just used the install command from the github project page you linked > to. Getting started section. > > Thanks, > > tglx Great, thank you! It explodes during lowering, which is a backend issue so that's fun :/ My guess is that this is a problem with -march=native on that version of LLVM (since a newer one works). Could you try this patch that makes that opt-in and see if that fixes it? https://github.com/nathanchance/tc-build/commit/9f1ae41cd4246f9e4d011542f094aa0df2c069b4 Cheers, Nathan