linux-kernel - Re: Avoid speculative indirect calls in kernel

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Date:   Fri, 5 Jan 2018 01:54:13 +0100 (CET)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Jon Masters <jcm@...hat.com>
cc:     "Woodhouse, David" <dwmw@...zon.co.uk>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Alan Cox <gnomes@...rguk.ukuu.org.uk>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andi Kleen <andi@...stfloor.org>,
        Greg Kroah-Hartman <gregkh@...ux-foundation.org>,
        Tim Chen <tim.c.chen@...ux.intel.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Dave Hansen <dave.hansen@...el.com>, Jeff Law <law@...hat.com>,
        Nick Clifton <nickc@...hat.com>
Subject: Re: Avoid speculative indirect calls in kernel

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.