linux-kernel - Re: [GIT pull] x86/pti updates for 4.15

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Date:   Sun, 14 Jan 2018 22:15:42 +0100
From:   David Woodhouse <dwmw2@...radead.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Greg KH <gregkh@...uxfoundation.org>
Subject: Re: [GIT pull] x86/pti updates for 4.15

On Sun, 2018-01-14 at 13:12 -0800, Linus Torvalds wrote:
> On Sun, Jan 14, 2018 at 1:01 PM, Thomas Gleixner <tglx@...utronix.de>
> wrote:
> > 
> > 
> > Good point. I'll queue a patch to that effect or do you just want
> > to do
> > that yourself?
> I don't think it's critical, and I don't care for rc8, so it's not
> timing-sensitive.
> 
> Maybe David should do it as part of the "the compiler people changed
> the name of the thunks" series anyway, since now I think that
> RETPOLINE_CFLAGS test might want to be extended too (to see which
> _version_ of the thunks we need to export).
> 
> Or maybe we'd just export the damn thunks under both names, just to
> allow people to use both versions of the compilers.
> 
> Christ, what a mess.

No, screw that. We're updating, and there's only one version of
anything. Let's not mess around with compatibility for thunk names that
never made the light of day in either a GCC or a Linux (even -rc)
release.

> My "let's not warn" is not important, and the thunk naming thing
> should be resolved first. Gaah.
> 
> So I think letting David worry about it sounds about right.

Thanks. :)
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