linux-kernel - Re: [RFC PATCH v2 25/27] x86/cet: Add PTRACE interface for CET

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Message-ID: <20180714062737.GA13242@amd>
Date:   Sat, 14 Jul 2018 08:27:37 +0200
From:   Pavel Machek <pavel@....cz>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     Yu-cheng Yu <yu-cheng.yu@...el.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-mm@...ck.org,
        linux-arch@...r.kernel.org, linux-api@...r.kernel.org,
        Arnd Bergmann <arnd@...db.de>,
        Andy Lutomirski <luto@...capital.net>,
        Balbir Singh <bsingharora@...il.com>,
        Cyrill Gorcunov <gorcunov@...il.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Florian Weimer <fweimer@...hat.com>,
        "H.J. Lu" <hjl.tools@...il.com>, Jann Horn <jannh@...gle.com>,
        Jonathan Corbet <corbet@....net>,
        Kees Cook <keescook@...omiun.org>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Nadav Amit <nadav.amit@...il.com>,
        Oleg Nesterov <oleg@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        "Ravi V. Shankar" <ravi.v.shankar@...el.com>,
        Vedvyas Shanbhogue <vedvyas.shanbhogue@...el.com>
Subject: Re: [RFC PATCH v2 25/27] x86/cet: Add PTRACE interface for CET

On Fri 2018-07-13 15:33:58, Ingo Molnar wrote:
> 
> * Pavel Machek <pavel@....cz> wrote:
> 
> > 
> > > > > to "CET" (which is a well-known acronym for "Central European Time"),
> > > > > not to CFE?
> > > > > 
> > > > 
> > > > I don't know if I can change that, will find out.
> > > 
> > > So what I'd suggest is something pretty simple: to use CFT/cft in kernel internal 
> > > names, except for the Intel feature bit and any MSR enumeration which can be CET 
> > > if Intel named it that way, and a short comment explaining the acronym difference.
> > > 
> > > Or something like that.
> > 
> > Actually, I don't think CFT is much better -- there's limited number
> > of TLAs (*). "ENFORCE_FLOW"? "FLOWE"? "EFLOW"?
> 
> Erm, I wanted to say 'CFE', i.e. the abbreviation of 'Control Flow Enforcement'.
> 
> But I guess I can live with CET as well ...

Yeah, and I am trying to say that perhaps we should use something
longer than three letters. It will make code longer but easier to
read.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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