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Date: Wed, 26 Jun 2019 17:18:37 +0200 (CEST) From: Thomas Gleixner <tglx@...utronix.de> To: Nathan Chancellor <natechancellor@...il.com> cc: Kees Cook <keescook@...omium.org>, Peter Zijlstra <peterz@...radead.org>, Miguel Ojeda <miguel.ojeda.sandonis@...il.com>, "Gustavo A. R. Silva" <gustavo@...eddedor.com>, Joe Perches <joe@...ches.com>, Ingo Molnar <mingo@...hat.com>, Arnaldo Carvalho de Melo <acme@...nel.org>, Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...hat.com>, Namhyung Kim <namhyung@...nel.org>, Borislav Petkov <bp@...en8.de>, "H. Peter Anvin" <hpa@...or.com>, "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>, Kan Liang <kan.liang@...ux.intel.com>, linux-kernel <linux-kernel@...r.kernel.org>, Shawn Landden <shawn@....icu>, clang-built-linux@...glegroups.com, Josh Poimboeuf <jpoimboe@...hat.com> Subject: Re: [PATCH] perf/x86/intel: Mark expected switch fall-throughs On Tue, 25 Jun 2019, Nathan Chancellor wrote: > On Tue, Jun 25, 2019 at 11:47:06PM +0200, Thomas Gleixner wrote: > > On Tue, 25 Jun 2019, Nathan Chancellor wrote: > > > On Tue, Jun 25, 2019 at 09:53:09PM +0200, Thomas Gleixner wrote: > > > > > > > > But can the script please check for a minimal clang version required to > > > > build that thing. > > > > > > > > The default clang-3.8 which is installed on Debian stretch explodes. The > > > > 6.0 variant from backports works as advertised. > > > > > > > > > > Hmmm interesting, I test a lot of different distros using Docker > > > containers to make sure the script works universally and that includes > > > Debian stretch, which is the stress tester because all of the packages > > > are older. I install the following packages then run the following > > > command and it works fine for me (just tested): > > > > > > $ apt update && apt install -y --no-install-recommends ca-certificates \ > > > ccache clang cmake curl file gcc g++ git make ninja-build python3 \ > > > texinfo zlib1g-dev > > > $ ./build-llvm.py > > > > > > If you could give me a build log, I'd be happy to look into it and see > > > what I can do. > > > > I can produce one tomorrow. 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
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