linux-kernel - Re: [PATCH] x86/speculation: Add document to describe Spectre and its mitigations

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Message-ID: <20190113231001.GB18710@amd>
Date:   Mon, 14 Jan 2019 00:10:01 +0100
From:   Pavel Machek <pavel@....cz>
To:     Tim Chen <tim.c.chen@...ux.intel.com>
Cc:     Jonathan Corbet <corbet@....net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jiri Kosina <jikos@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Tom Lendacky <thomas.lendacky@....com>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        David Woodhouse <dwmw@...zon.co.uk>,
        Andi Kleen <ak@...ux.intel.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Asit Mallick <asit.k.mallick@...el.com>,
        Arjan van de Ven <arjan@...ux.intel.com>,
        Jon Masters <jcm@...hat.com>,
        Waiman Long <longman9394@...il.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        Borislav Petkov <bp@...en8.de>, linux-kernel@...r.kernel.org,
        x86@...nel.org, stable@...r.kernel.org
Subject: Re: [PATCH] x86/speculation: Add document to describe Spectre and
 its mitigations

Hi!

> >>
> >> Signed-off-by: Andi Kleen <ak@...ux.intel.com>
> >> Signed-off-by: Tim Chen <tim.c.chen@...ux.intel.com>
> >> ---
> >>  Documentation/admin-guide/spectre.rst | 502 ++++++++++++++++++++++++++++++++++
> >>  1 file changed, 502 insertions(+)
> >>  create mode 100644 Documentation/admin-guide/spectre.rst
> > 
> > I only saw this now, seems I wasn't copied... I'll take a deeper look, but
> 
> Thanks for taking a look.  I'll make sure you are copied on the updates.
> 
> > I have a couple of meta comments:
> > 
> >  - This could arguably go in the security book rather than the admin
> >    guide.  I don't really have a strong opinion on which is right at the
> >    moment, but others might.
> 
> Since l1tf.rst is already here in admin guide, that's why I keep spectre.rst here as well.

I believe l1tf is misplaced. That one really is Intel-specific (not
even all x86s are affectd). Same for Meltdown.
									Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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