linux-kernel - Re: Improve retpoline for Skylake

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Date:   Mon, 15 Jan 2018 10:06:34 +0100
From:   David Woodhouse <dwmw2@...radead.org>
To:     Jon Masters <jcm@...masters.org>,
        Henrique de Moraes Holschuh <hmh@....eng.br>,
        Andi Kleen <andi@...stfloor.org>
Cc:     tglx@...utronix.de, x86@...nel.org, linux-kernel@...r.kernel.org,
        pjt@...gle.com, torvalds@...ux-foundation.org,
        gregkh@...ux-foundation.org, peterz@...radead.org,
        luto@...capital.net, thomas.lendacky@....com,
        arjan.van.de.ven@...el.com
Subject: Re: Improve retpoline for Skylake

On Mon, 2018-01-15 at 03:26 -0500, Jon Masters wrote:
> 
> Our numbers on Skylake weren't bad, and there seem to be all kinds of
> corner cases, so again, it seems as if IBRS is the safest choice.

If only someone were rapidly iterating the IBRS patch set on top of the
latest tip, fixing the issues and making it consistent with everything
else that's being done...
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