From: Thomas Gleixner <tglx@linutronix.de>
To: Nathan Chancellor <natechancellor@gmail.com>
Cc: Kees Cook <keescook@chromium.org>,
Peter Zijlstra <peterz@infradead.org>,
Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>,
"Gustavo A. R. Silva" <gustavo@embeddedor.com>,
Joe Perches <joe@perches.com>, Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
Borislav Petkov <bp@alien8.de>, "H. Peter Anvin" <hpa@zytor.com>,
"maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)"
<x86@kernel.org>, Kan Liang <kan.liang@linux.intel.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
Shawn Landden <shawn@git.icu>,
clang-built-linux@googlegroups.com,
Josh Poimboeuf <jpoimboe@redhat.com>
Subject: Re: [PATCH] perf/x86/intel: Mark expected switch fall-throughs
Date: Wed, 26 Jun 2019 21:46:02 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.21.1906262140570.32342@nanos.tec.linutronix.de> (raw)
In-Reply-To: <20190626190028.GA14249@archlinux-epyc>
On Wed, 26 Jun 2019, Nathan Chancellor wrote:
> 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.
> >
> 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
clang --version
clang version 3.8.1-24 (tags/RELEASE_381/final)
Target: x86_64-pc-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
./build-llvm.py
...
LLVM build duration: 0:03:14
Tested-by: Thomas Gleixner <tglx@linutronix.de>
next prev parent reply other threads:[~2019-06-26 19:46 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-24 16:19 [PATCH] perf/x86/intel: Mark expected switch fall-throughs Gustavo A. R. Silva
2019-06-24 19:31 ` Peter Zijlstra
2019-06-24 19:45 ` Joe Perches
2019-06-24 20:37 ` Peter Zijlstra
2019-06-24 20:53 ` Gustavo A. R. Silva
2019-06-24 20:57 ` Joe Perches
2019-06-25 7:20 ` Peter Zijlstra
2019-06-24 22:28 ` Miguel Ojeda
2019-06-25 7:18 ` Peter Zijlstra
2019-06-25 12:47 ` Miguel Ojeda
2019-06-25 18:15 ` Nick Desaulniers
2019-06-25 22:29 ` Joe Perches
2019-06-25 22:57 ` Nick Desaulniers
2019-06-25 23:25 ` Joe Perches
2019-06-26 8:49 ` Peter Zijlstra
2019-06-26 22:14 ` Nick Desaulniers
2019-06-27 7:12 ` Peter Zijlstra
2019-06-28 13:31 ` Peter Zijlstra
2019-06-28 18:44 ` Nick Desaulniers
2019-06-29 7:10 ` Peter Zijlstra
2019-06-25 17:12 ` Kees Cook
2019-06-25 18:05 ` Nathan Chancellor
2019-06-25 19:53 ` Thomas Gleixner
2019-06-25 20:27 ` Nathan Chancellor
2019-06-25 20:37 ` Nick Desaulniers
2019-06-25 21:47 ` Thomas Gleixner
2019-06-26 5:10 ` Nathan Chancellor
2019-06-26 15:18 ` Thomas Gleixner
2019-06-26 19:00 ` Nathan Chancellor
2019-06-26 19:46 ` Thomas Gleixner [this message]
2019-06-26 20:03 ` Nathan Chancellor
2019-06-26 9:24 ` Peter Zijlstra
2019-06-26 9:55 ` Peter Zijlstra
2019-06-26 22:23 ` Nick Desaulniers
2019-06-27 7:35 ` Peter Zijlstra
2019-06-26 10:43 ` Peter Zijlstra
2019-06-26 22:15 ` Nick Desaulniers
2019-06-27 7:16 ` Peter Zijlstra
2019-06-26 16:30 ` Peter Zijlstra
2019-06-26 22:33 ` Nick Desaulniers
2019-06-26 23:11 ` Thomas Gleixner
2019-06-27 7:11 ` Peter Zijlstra
2019-06-25 23:46 ` Arnaldo Carvalho de Melo
2019-06-26 5:14 ` Nathan Chancellor
2019-06-25 20:09 ` Kees Cook
2019-06-26 8:06 ` Peter Zijlstra
2019-06-25 7:15 ` Peter Zijlstra
2019-07-25 16:27 ` [tip:perf/urgent] " tip-bot for Gustavo A. R. Silva
2019-07-25 17:06 ` Borislav Petkov
2019-07-25 17:35 ` Peter Zijlstra
2019-07-25 23:18 ` Joe Perches
2019-07-25 23:28 ` Kees Cook
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