linux-kernel - Re: [RFC v2 0/6] x86: dynamic indirect branch promotion

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Message-ID: <CALCETrW_52zEv1kHa7AdhF4PUGvyX4VyHqig1bFAJM_3VAXn=A@mail.gmail.com>
Date:   Mon, 31 Dec 2018 11:51:04 -0800
From:   Andy Lutomirski <luto@...nel.org>
To:     Nadav Amit <namit@...are.com>
Cc:     Ingo Molnar <mingo@...hat.com>, Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Edward Cree <ecree@...arflare.com>,
        "H . Peter Anvin" <hpa@...or.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>,
        Nadav Amit <nadav.amit@...il.com>, X86 ML <x86@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Borislav Petkov <bp@...en8.de>,
        David Woodhouse <dwmw@...zon.co.uk>
Subject: Re: [RFC v2 0/6] x86: dynamic indirect branch promotion

On Sun, Dec 30, 2018 at 11:20 PM Nadav Amit <namit@...are.com> wrote:
>
> This is a revised version of optpolines (formerly named retpolines) for
> dynamic indirect branch promotion in order to reduce retpoline overheads
> [1].

Some of your changelogs still call them "relpolines".

I have a crazy suggestion: maybe don't give them a cute name at all?
Where it's actually necessary to name them (like in a config option),
use a description like CONFIG_DYNAMIC_DEVIRTUALIZATION or
CONFIG_PATCH_INDIRECT_CALLS or something.

--Andy