Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1751360AbeAEAy3 (ORCPT <rfc822;ralf@linux-mips.org> + 1 other);
        Thu, 4 Jan 2018 19:54:29 -0500
Received: from Galois.linutronix.de ([146.0.238.70]:43415 "EHLO
        Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1751108AbeAEAy2 (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Thu, 4 Jan 2018 19:54:28 -0500
Date: Fri, 5 Jan 2018 01:54:13 +0100 (CET)
From: Thomas Gleixner <tglx@linutronix.de>
To: Jon Masters <jcm@redhat.com>
cc: "Woodhouse, David" <dwmw@amazon.co.uk>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Alan Cox <gnomes@lxorguk.ukuu.org.uk>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andi Kleen <andi@firstfloor.org>,
        Greg Kroah-Hartman <gregkh@linux-foundation.org>,
        Tim Chen <tim.c.chen@linux.intel.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Dave Hansen <dave.hansen@intel.com>, Jeff Law <law@redhat.com>,
        Nick Clifton <nickc@redhat.com>
Subject: Re: Avoid speculative indirect calls in kernel
In-Reply-To: <4dde456c-fd15-e768-8876-5844c8b7c455@redhat.com>
Message-ID: <alpine.DEB.2.20.1801050153290.2127@nanos>
References: <20180103230934.15788-1-andi@firstfloor.org> <CA+55aFzCocoK+4kxAUEhaxxba4RTv3ewBmhiZ8Osc9iDkBtCEQ@mail.gmail.com> <e64025e6-9c4f-703d-cb69-29eeb9cc16bd@redhat.com> <20180104015920.1ad7b9d3@alans-desktop> <e3a0fa73-1328-aa42-13ea-c670c8d4ac87@redhat.com>
 <1515054014.12987.75.camel@amazon.co.uk> <403e65be-cfd1-fd08-0401-2e26470b63d4@redhat.com> <4dde456c-fd15-e768-8876-5844c8b7c455@redhat.com>
User-Agent: Alpine 2.20 (DEB 67 2015-01-07)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
X-Linutronix-Spam-Score: -1.0
X-Linutronix-Spam-Level: -
X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required,  ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Return-Path: <linux-kernel-owner@vger.kernel.org>

On Thu, 4 Jan 2018, Jon Masters wrote:
> P.S. I've an internal document where I've been tracking "nice to haves"
> for later, and one of them is whether it makes sense to tag binaries as
> "trusted" (e.g. extended attribute, label, whatever). It was something I
> wanted to bring up at some point as potentially worth considering.

Scratch that. There is no such thing as a trusted binary.