linux-kernel - Re: [PATCH bpf v3] x86/cpufeature: bpf hack for clang not supporting asm goto

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Message-ID: <20180510162028.GB16130@pd.tnic>
Date:   Thu, 10 May 2018 18:20:28 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:     Peter Zijlstra <peterz@...radead.org>, Yonghong Song <yhs@...com>,
        mingo@...nel.org, torvalds@...ux-foundation.org, ast@...com,
        daniel@...earbox.net, linux-kernel@...r.kernel.org, x86@...nel.org,
        netdev@...r.kernel.org, kernel-team@...com,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH bpf v3] x86/cpufeature: bpf hack for clang not supporting
 asm goto

On Thu, May 10, 2018 at 08:52:42AM -0700, Alexei Starovoitov wrote:
> That makes me wonder what happened with "we do not break user space" rule?

As someone already pointed out on IRC, arch/x86/include/asm/cpufeature.h
is solely a kernel header so nothing but kernel should include it. So
forget the userspace breakage "argument".

-- 
Regards/Gruss,
    Boris.

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